Dell PowerVault MD3200 инструкция обслуживания

Dell PowerV ault MD3200 and MD3220 Storage Array s Owner’ s Manual Regulatory Model: E03J Series and E04J Series Regulatory T ype: E03J001 and E04J001 book.book Page 1 Tues day, September 27, 201 1 3:25 PM[...]

Notes, Cautions, and W arnings NOTE: A NOTE indicates important information that helps you make better use of your computer . CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followe d. WA RN I N G : A W ARNING indicates a potential for property damage, personal injury , or death. ___________ _______[...]

Contents 3 Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . 19 About This Document . . . . . . . . . . . . . . . . . . 19 Inside the box of the De ll PowerV ault MD3200 Series Storage Array . . . . . . . . . . . . . . . . . . . 20 MD3200 Ser ies Storage Array . . . . . . . . . . . 20 Dell PowerV ault Modular Disk Storage Manage[...]

4 Contents RAID Controller Module Connectors and Features . . . . . . . . . . . . . . . . . . . . . . . 32 RAID Controller Modul e— Additional Features . . . . . 34 Battery Backup Unit . . . . . . . . . . . . . . . . 34 Storage Array Thermal Shutdown . . . . . . . . . 35 Sy stem Password Reset . . . . . . . . . . . . . . 35 Cache Functions and Fe[...]

Contents 5 Cycle T ime . . . . . . . . . . . . . . . . . . . . . 44 V irtual Disk Operations Limit . . . . . . . . . . . . 45 Disk Group Operations . . . . . . . . . . . . . . . . . . 45 RAID Level Migration . . . . . . . . . . . . . . . . 45 Segment Size Migration . . . . . . . . . . . . . . 45 V irtual Disk Capacity Expansion . . . . . . . . . . [...]

6 Contents 5 Configuration: Overview . . . . . . . . . . . . 61 User Interface . . . . . . . . . . . . . . . . . . . . . . 61 Enterprise Management Window . . . . . . . . . 62 Array Management Window . . . . . . . . . . . . 63 6 Configuration: About Y our Storage Array . . . . . . . . . . . . . . . . . . . . . 65 Out-of-Band and In-Band Management [...]

Contents 7 Setting the Storage Array RAID Controller Module Clocks . . . . . . . . . . . . . . . . . . . 82 7 Configuration: Event Monitor . . . . . . . . . 83 Enabling or Disabling the Event Monitor . . . . . . . . 84 Windows . . . . . . . . . . . . . . . . . . . . . . 84 Linux . . . . . . . . . . . . . . . . . . . . . . . . 84 8 Configuration: Ab[...]

8 Contents Creating Disk Groups . . . . . . . . . . . . . . . . 96 Locating a Disk Group . . . . . . . . . . . . . . . 98 Creating V irtual Disks . . . . . . . . . . . . . . . . 98 Changing the V irtual Disk Modification Priority . . . . . . . . . . . . . . . 100 Changing the V irtual Disk Cache Settings . . . . 101 Changing the Segment Size of a V[...]

Contents 9 Changing the RAID Controller Module Ownership of a Disk Group . . . . . . . . . . . . . 123 Changing the RAID Level of a Disk Group . . . . . 124 Removing a Host-to-V irtual Disk Mapping Using Linux DMMP . . . . . . . . . . . . . . . . . 124 Restricted Mappings . . . . . . . . . . . . . . . . . . . 126 Changing the RAID Controller Module[...]

10 Contents Common Reasons for Scheduling a Snapshot V irtual Disk . . . . . . . . . . . . . . . 140 Guidelines for Creating Snapshot Schedules . . . . . . . . . . . . . . . 141 Enabling and Disabling Snapshot Schedules . . . . . . . . . . . . . . . . . . . . . 142 Creating a Snapshot V irtual Disk Using the Simple Path . . . . . . . . . . . . . . [...]

Contents 11 Resuming a Snapshot Rollback . . . . . . . . . . 160 Canceling a Snapshot Rollback . . . . . . . . . . 161 11 Configuration: Premium Feature— V irtual Disk Copy . . . . . . . . . . . . . . . . . . 163 T ypes of Virtual Disk Copies . . . . . . . . . . . . . . . 164 Offline Copy . . . . . . . . . . . . . . . . . . . . . 164 Online Copy [...]

12 Contents Recopying a Virtual Disk . . . . . . . . . . . . . . . . 174 Preparing Host Ser vers to Recopy a V irtual Disk . . . . . . . . . . . . . . . 174 Re-Copying a Virtual Disk . . . . . . . . . . . . . 175 Removing Copy Pairs . . . . . . . . . . . . . . . . . . 176 12 Configuration: Premium Feature— Upgrading to High- Performance-T ier . .[...]

Contents 13 Downloading Phy sical Disk Firmware . . . . . . . . . 195 Downloading MD1200 Se ries Expansion Module EMM Firmware . . . . . . . . . . . . . . . . . . . . . 197 Self-Monitoring Anal y sis and Reporting T echnology (SMART) . . . . . . . . . . . . . . . . . . 198 Media Errors and Unreadable Sectors . . . . . . . . . 198 15 Management: Ins[...]

14 Contents RAID Controller Module Backup Battery Unit . . . . . 214 Removing the RAID Controller Module Backup Battery Unit . . . . . . . . . . . . . . . 214 Installing the RAID Controller Module Backup Battery Unit . . . . . . . . . . . . . . . 215 Power Supply/Cooling Fan Module . . . . . . . . . . 216 Removing a Power Supply/Cooling Fan Module [...]

Contents 15 Device Health Conditions . . . . . . . . . . . . . . . . 229 Storage Array Support Da ta . . . . . . . . . . . . . . . 232 Automatically Collect the Support Bundle Data . . . . 233 Collecting the Phy sical Disk Data . . . . . . . . . . . . 234 Event Log . . . . . . . . . . . . . . . . . . . . . . . . . 234 Recovery Guru . . . . . . . . [...]

16 Contents 19 T roubleshooting: Y our Array . . . . . . . . . 253 Safety First—For you and Y our Arr ay . . . . . . . . . 253 T roubleshooting Storage Array Startup Failur e . . . . 253 T roubleshooting Loss of Communication . . . . . . . 253 T roubleshooting External Connections . . . . . . . . 253 T roubleshooting Power Supply/Cooling Fan Modu[...]

Contents 17 20 Getting Help . . . . . . . . . . . . . . . . . . . . . . 265 Contacting Dell . . . . . . . . . . . . . . . . . . . . . 265 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 book.book Page 17 Tu esday, September 27, 2011 3 :25 PM[...]

18 Contents book.book Page 18 Tu esday, September 27, 2011 3 :25 PM[...]

Introduction 19 1 Introduction NOTE: Unless specified, MD3200 Series r epresents Dell Powe rV ault MD3200 and Dell PowerV ault MD3220 Storage Array s. WA RN I N G : See the Safety , Environmental, and Regulatory Information document for important safety information before following any procedures listed in this document. About This Document This gu[...]

20 Introduction Inside the box of the Dell PowerV ault MD3200 Series Storage Array Y our MD320 0 Series prod uct package includes: • Dell P owerV ault MD3200 Series storage array • SAS cabl es • P ower cables (2) • F ront B ezel (optional) • Mounting rails (2) (optional) • MD3200 Series res o u r c e m e di a • Rack Installation Instr[...]

Introduction 21 •T h e Getting Started Guide provides an overview of setting up and cabling your st orage array . •T h e Deployment Guide provides installation and configuration instructions fo r b o t h s of tw a re an d h a rd w a re . •T h e Storage Manager CLI Guide provides information about using the command line interface (CLI). • Re[...]

22 Introduction book.book Page 22 Tu esday, September 27, 2011 3 :25 PM[...]

Planning: About Y our Storage Array 23 2 Planning: About Y our Storage Array Overview The MD3200 Se ries storage array is designed for high av ailability , offering r edundant access to d ata st orage. It fe atures support for both single and dual R AID controller configuration. The Dell P owerV ault M D3200 Series st orage array provide s 6.0-Gbps[...]

24 Planning: About Y our Storage Array Hardware Features Front-Panel Feature s and Indica tors Figure 2-1. Front-Panel Features and Indicators—Dell PowerV ault MD3200 Figure 2-2. Front-Panel Features and Indicators—Dell PowerV ault MD3220 1 2 3 5 4 6 1 2 3 4 6 5 book.book Page 24 Tu esday, September 27, 2011 3 :25 PM[...]

Planning: About Y our Storage Array 25 Figure 2-3. Front-Bezel Features and Indicators Item Indicator , Button, or Connector Icon Descript ion 1 Enclosu re status LED The encl osure stat us LED lights when t he enclosur e power is on. Lights blue during normal operation. Blinks blue when a host server is identifying the enclosur e or when the syste[...]

26 Planning: About Y our Storage Array 3 Split mode LED This LED must be unlit as the sp lit mode function is not supported by the MD3200 Series Storage Arrays. 4 System identi fication button The system identification button on the front control panel can be u sed to locate a particula r enclosur e within a rack. When the button is pushed, the sys[...]

Planning: About Y our Storage Array 27 Back Pane l Features and Indic ators Figure 2-4. Back-Panel Features and Indi cators—Dell PowerV ault MD3200 Series 1 600 W power supply/cooling fan module 2 RAID Controller Module 0 3 RAID Controller Module 1 4 600 W power supply/cooling fan module 1 23 4 book.book Page 27 Tu esday, September 27, 2011 3 :25[...]

28 Planning: About Y our Storage Array Hard-Drive Indicator Patterns Figure 2-5. Hard Drive Indicators 1 hard-drive activity indicator (green) 2 hard-drive status indicator (green and amber) 1 2 book.book Page 28 Tu esday, September 27, 2011 3 :25 PM[...]

Planning: About Y our Storage Array 29 Power Supply and Cooling Fan Features The MD3200 Seri es storage array includes two integrated, hot-swappable power supply/cooling fan modules. Both modules must be in stalled to ensure proper cooli ng. The syst em requi res a t least one of the cooling f ans to function to avoid overheating. A power supply/co[...]

30 Planning: About Y our Storage Array Power Indicator Codes and Features Figure 2-6. Power Indicator Codes and Feature Item LED T y pe Icon Description 1 DC power The LED lights gr een when the DC output voltage is within the limit. If this LED is off, it indicat es that the DC output voltage ar e not within the limit. 2 P ower supply/cooling fan [...]

Planning: RAID Controller Modules 31 3 Planning: RAID Controller Modules RAID Controller Modules The R AID controller modules provi de high-performance, ad vanced virtual disk c onfigurat ion, an d fault-t olera nt disk subsystem managemen t. Each R AID controller module contains 2 GB of cache that is mirror ed with the other controller's cach[...]

32 Planning: RAID Controller Modules RAID Controller Module Connectors and Features Figure 3-1. MD3200 Series SAS RAID Controller Module Item Component Function 1 SAS OUT port P rovides SAS connection for cabling to a downchain expansion enclosur e. 2 SAS IN port 0 P rovides host-to-controller SAS connection. 3 SAS IN port 1 P rovides host-to-contr[...]

Planning: RAID Controller Modules 33 9 Controller power LED Lights green whe n controlle r power is on. Off when controller is not power ed. 10 SAS IN 0 port link/fault LED Lights gr een when all four links are connected. Lights amber when one to 3 links ar e disconnected. Off when all links in t he port ar e disconnected or cable is disconnected. [...]

34 Planning: RAID Controller Modules RAID Controller Modu le—Additional Features Battery Backup Unit Each R AID controller contains a two- cell Lithium ion nanopolymer battery backup unit (BBU). It provides power to the R AID controller module in the event of a power outage. F or information on removing and installing the BBU, see "R AID Con[...]

Planning: RAID Controller Modules 35 Storage Array Therma l Shutdown The system automatically shuts do wn when system temperature e xceeds the safe threshold. The battery backup unit protects against data loss by providing power to offload cache to no n-volat ile memory in the event of power loss. It is not necessary to shut down any MD1200 Series [...]

36 Planning: RAID Controller Modules Cache Functions and Features Cache Mirroring Cache mirroring function co pies accepted host-write data from the primary controller to the partner controller . This action ensures that host-write data is safely mirror ed to the partner controller befor e successful completion status is retur ned to the host. If a[...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 37 4 Planning: MD3200 Series Storage Array T erms and Concepts This chapter e xplains the terms and concepts used for configuration and operation of the MD3200 Series storage arrays. Phy sical Disks, Virtual Disks, and Disk Groups Physical disks in your storage array provide the physical s[...]

38 Planning: MD3200 Series St orage Array T erms and Concepts Phy sical Disks Only Dell supported 6.0-Gbps SAS physica l disks are supporte d in the storage array . If the storage array detects unsuppo rted physical disks, it marks the disk as unsupported and the physical disk be comes unavailable for all op erations. NOTE: The MD3200 Series storag[...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 39 If a disk drive rebuild fails because of a source drive failur e or because the drive is too small, the MDSM r eports a failur e of the physical disk even though the LE D state on the drive indi cates the rebuild was aborted (gr een for 3 seconds, amber for 3 seco nds, then off for 3 se[...]

40 Planning: MD3200 Series St orage Array T erms and Concepts 3 P rovide host server ac cess. 4 Cr eate mappings to associate the vi rtual di sks with the host s ervers. NOTE: Host server access must be cr eated before mapping virtual disks. Disk groups are always created in the un configured capacity of a storage array . Unconfigured capacity is t[...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 41 Using multiple physical disks h as the follo wing advant ages over using a s ingle physical disk: • Placing data on multiple physical disk s (striping) allows input/output (I/O) operations to occur simultaneo usly and improve performance. • Storing redundant data on multiple ph ysic[...]

42 Planning: MD3200 Series St orage Array T erms and Concepts RAID 1 R AID 1 uses disk mirror ing so that da ta written to one physical disk is simultaneously written to another physica l disk. This R AID level offers fast performance, the best data availability , and the highest disk overhead. R AID 1 is rec ommended for small databases or ot her [...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 43 Segment Size Disk striping enables data to be wri tten acro ss multiple physical disks. Disk striping enhances performance be cause striped disks are accessed simultaneo usly . The segment si ze or stripe eleme nt size specifies the size of data in a stripe written to a single disk. The[...]

44 Planning: MD3200 Series St orage Array T erms and Concepts Consistency Check A consistency check verifies the corr ectness of data in a r edundant array (R AID levels 1, 5, 6, and 10). F or e xampl e, in a system with parity , checking consistency involves computing the data on one physical disk and comparing the results to the contents of the p[...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 45 V irtual Disk Operations Limit The maximum number of active, concurre nt virtual disk processes per RAID controller module installed in the storage array is four . This limit is applied to the following virtual disk processes: • Background initialization • F or eground initializatio[...]

46 Planning: MD3200 Series St orage Array T erms and Concepts Dynamic seg ment size migration enables the segment size of a given virtual disk to be changed. A default segment size is set when the virtual disk is created, based on such factors as the RAID level and e xpected usage. Y ou can change the default value (128 KB) if se gment size usage d[...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 47 Disk Group Defragmentation Defragmenting consol idates the fr ee ca pacity in the disk group into one contiguous area. Defragment ation does not change the way in which the data is stored on the virtual disks. Disk Group Operations Limit The maximum number of active, conc urrent disk gr[...]

48 Planning: MD3200 Series St orage Array T erms and Concepts • Segment size migration • Disk group expansion • Disk group defragmentation The priority of each of these operations can be chan ged to address performance requirements of the environm ent in which the oper ations are to be e xecut ed. NOTE: Setting a high priority level impact s [...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 49 the MD3200 Series stor age array does not r ecognize the migrating metadata and that data is lost. In this case, th e MD3200 Series storag e array initializes the physical disks and marks th em as unconfigured capacity . NOTE: Only disk groups and associated virtual disks with all mem b[...]

50 Planning: MD3200 Series St orage Array T erms and Concepts • Migrating virtual dis ks to a storage array with no e xisting physical disks— T urn off the destination storage array , when migrating disk groups or a complete set of physical disks from a stor age array to another storage array that has no existing physical dis ks. After the dest[...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 51 Host Server -to-Virtual Disk Mapping The host server attached to a storag e array accesses various virtual disks on the storage array through its host ports. Specific virtual disk -to-L UN mappings to an individual host server can be defined. In addition, the host server can be part of [...]

52 Planning: MD3200 Series St orage Array T erms and Concepts online and user -accessible. W hen the backup is completed, the snapshot virtual disk is no longer needed. Y o u can create up to four snapshots per virtual disk. Snapshots ar e used to r ecover pr evious versions of files that have changed since the sna pshot was tak en. Snapsh ots ar e[...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 53 V irtual Disk Co py V irtual disk copy is a premium feature to : •B a c k u p d a t a • Copy data from disk groups that use sm aller -capacity physical di sks to disk groups using greater capacity physical disks • Restore snapshot virtual disk data to the source virtual disk. V ir[...]

54 Planning: MD3200 Series St orage Array T erms and Concepts Virtual Disk Recovery Y ou can use the Edit host ser ver -to- virtual disk map pings feature t o recover data from the backup virtual disk. Th is functionality enables you to unmap the original source virtual disk from its host server , then map the backup virtual disk to the same host s[...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 55 The multi-path software identifies the ex istence of multiple paths to a virtual disk and establishes a pr eferred path to that disk. If any component in the preferr ed path fails, the multi-path s oftware auto matica lly re-routes I/O r equests to the alternate path so that the storage[...]

56 Planning: MD3200 Series St orage Array T erms and Concepts Ownership can later be mo dified to balance worklo ad according to actual usage. If virtual disk ownership is not manually balanced, it is possible for one controller to have the majority of the work, while t he other controller is idle. Limit the number of virtual disks in a disk group.[...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 57 • L east path weight with subset (W indows operating systems only)—The least queue depth with subset policy is also known as the le ast I/Os or least requests policy . This policy routes the ne xt I/O r equest to a data path that has the least outstanding I/O requests queued. F or t[...]

58 Planning: MD3200 Series St orage Array T erms and Concepts 4 Click Settings . a Select the items that you want to monitor . Y ou can monitor: • RAID controller modules •V i r t u a l d i s k s • Storage array totals NOTE: By default, all items are selected. b In P olling interval , select how often you want to upd ate the performance stati[...]

Planning: MD3200 Ser ies St orage Array T erms and Concepts 59 12 Click Save . The P erformance Monitor data provides information about how your storage array is performing. The data is presented in eight columns, which are described in this table. U se this data to make performanc e tuning decisions for your storage array . F or more information, [...]

60 Planning: MD3200 Series St orage Array T erms and Concepts book.book Page 60 Tu esday, September 27, 2011 3 :25 PM[...]

Configuration: Overview 61 5 Configuration: Overview Dell P owerV ault Modular Disk Stor age Manager (MDSM) online help contains information on the how to use the MDSM application to perform the configuration and mana gement tasks described in this document. Y ou can access online help by selecting Help located at the top right corner of MDSM inter[...]

62 Configuration: Overview Enterprise M anagement Windo w The EMW provides high-level manage ment of storage arrays. When you start MDSM, the EMW is displayed. The EMW has these tabs: • Devices tab—P rovides information about the storage arrays. • Setup tab—P r esents the initial setup ta sks that guide you through addin g storage arrays an[...]

Configuration: Overview 63 Inheriting the Sy stem Settings Use the Inherit Syst em Settings option to im port the operating system theme settings into the MDSM . Importing system theme se ttings affects features lik e font type, font size, color , and contrast in the MDSM. 1 Open the Inherit System Settings window in one of these ways: • Select T[...]

64 Configuration: Overview • Physical tab—Y ou can view the organization of the storage array by RAID controller modules, phys ical disks, and other hardwar e components. • Mappings tab—Y ou can defi ne the hosts, host groups, and host ports. Y ou can change the mappings to grant virt u al disk access to h ost groups and hosts and create st[...]

Configuration: About Y our Storage Array 65 6 Configuration: About Y our Storage Array Out-of-Band and In-Band Management Y ou can manage a storage array in two ways: • Out-of -band management • In-band management Out-of-Band Management Using the out-of -band managem ent method, data is separate from commands and events. Data travels thro ugh t[...]

66 Configuration: About Y our Storage Array In-Band Management Using in-band management, commands, events, and data travel through the host-to-controller interface. Unlik e out-of -band management, comm ands and events are mix ed with data. NOTE: For detailed information on settin g up in-band and out-of-band management see the Deployment Guide. Wh[...]

Configuration: About Y our Storage Array 67 NOTE: For Linux, set the default gateway so that broadcast packets are sent to 255.255.25 5.0. For Red Hat Enterp rise Linux, if n o gateway exists on the network, set the default gateway to the IP address of the NIC. NOTE: MDSM uses TCP/UDP por t 2463 for communication to the MD Storage Array . Automatic[...]

68 Configuration: About Y our Storage Array NOTE: The host age nt must be restarted before in-band management communication can be established. See "S tarting or Restarting the Host Context Agent Software" on page 251. 3 Click Add . 4 Use one of these methods to name a storage array : • In the EMW , select the Setup tab, and select Name[...]

Configuration: About Y our Storage Array 69 • Save Configur ation—Save the conf iguration parameters in a file that you can use to restor e the configur ation, or reuse the configuration on a nother storage array . F or more information, see the P owerV ault Modular Disk Storag e Manager online help topics. After you complete the basic steps fo[...]

70 Configuration: About Y our Storage Array A confirmation message is displayed. 4 Click OK . Naming or Renaming Sto rage Array s Each storage array must be assigned a unique up to 30-char acter alphanumeric name. A name can consist of letters, numbers, and the special characters underscor e (_), dash (–), and pound sign (#). No other special cha[...]

Configuration: About Y our Storage Array 71 Setting a Password Y ou can configure each storage array with a passwor d to protect it from unauthorized access. MDSM prompts for the passwor d when an attempt is made to change the storage array configur ation, such as, when a virtual disk i s cr eated or deleted. View operations do not change the stora[...]

72 Configuration: About Y our Storage Array Password Guidelines F ollow these guidelines when you cr eate a password: • Use secure passwor ds for your storage array . A password must b e easy for you to remember but difficult for ot hers to determine. Consider using numbers or special characters in the place of letters, such as a 1 in the place o[...]

Configuration: About Y our Storage Array 73 Adding/Editi ng a Comment to an E xisting Storage Array A descriptive comment, with an applic a ble storage array name, is a helpful identification tool. Y o u can add or edit a comment for a storage array in the EMW only . T o add or edit a comment: 1 In the EMW , select the Devices tab and select the r [...]

74 Configuration: About Y our Storage Array Enabling Premium Features Y ou can enable pr emium features on the storage array . T o enable the premium features, you must obtain a feature k ey file specific to the pr emium feature that you want to enable from your storage supplier . T o enable premium features: 1 F rom the toolbar in AMW , select Sto[...]

Configuration: About Y our Storage Array 75 Changing the Cache Settings on the Storage Array T o change the storage array cache setting s: 1 In the AMW , select Storage Array  Change  Cache Settings . The Change Cache Settings window is dis played. 2 Select or enter the percentage of unwr itten data in the cache to trigger a cache fl ush in S[...]

76 Configuration: About Y our Storage Array T o change the enclo sur e order in the Physical pane: 1 In the AMW , select Storage Array  Change  Enclosure Order . 2 F rom the enclosures list, select the en closure you want to move and click eithe r Up or Down to move the enclosur e to the new position. 3 Click OK . If you have set a password f[...]

Configuration: About Y our Storage Array 77 Configur ing E-mail Alerts F or more inf ormation on configuring al ert notifications, see "Configuring Alert Notifications" on page 76. T o configur e e-mail alerts: 1 Open the Configure Alerts dialog by performing one of these actions: • In the T r ee view or the T able view on the Devices t[...]

78 Configuration: About Y our Storage Array 6 T o include the contact information of th e sender in the e-mail alert, select Include contact information with the alerts , and type the contact info rmati on. NOTE: Including the contact information in the e-mail alert is optional. 7 Select the e-mail tab to configur e the e -mail destinations. • Ad[...]

Configuration: About Y our Storage Array 79 An alert icon is displayed next to each node in the T ree view where an alert is set. T o ensure that the e-mail is sent successfully : • Y ou must provide a SMTP mail server n ame and an e-mail s ender addr ess for the e-mail addr esses to work. • The e-mail ad dresses that you had previously configu[...]

80 Configuration: About Y our Storage Array • Add ing an SNMP address—In Community name , type the community name. In T rap destination , type the trap destina tion, and click Add . NOTE: The community name is an American Standa rd Code for Information Interchange (ASCII) string that ide ntifi es a known set of network management stations and i[...]

Configuration: About Y our Storage Array 81 Battery Settings A smart battery backup unit (BBU) can perform a learn cycle. The smart BBU module includes the battery , a battery gas ga uge, and a battery charger . Th e learn cycle calibrates the sma rt battery gas gauge so that it provides a measurement of the char ge of the battery module. A learn c[...]

82 Configuration: About Y our Storage Array Setting the Storage Array RA ID Controller Module Clocks Y ou can use the Synchr onize RAID Controller Module C locks option to synchronize the st orage array R AID controller module clo cks with the storag e management station. This option ma kes s ure that the eve nt timestamps written by the RAID contr[...]

Configuration: Event Monitor 83 7 Configuration: Event Monitor An event monitor is provided with De ll P owerV ault Modular Disk Sto rage Manager (MDSM). The event monitor runs continuous ly in the background and monitors activity on the managed storage arrays. If the event monitor detects any critical problems, it can notify a host or r emote syst[...]

84 Configuration: Event Monitor Enabling or Disabli ng the Event Monitor Y ou can enable or disable the event monitor at any time. Disable the event monitor if you do not want the system to send alert notifications. If you ar e running the event monitor on multiple systems, disabling the event monitor on all but one system pr events t he sending of[...]

Configuration: About Y our Host 85 8 Configuration: About Y our Host Configuring Host Access Modular Disk Storage Manager (MDSM) software is comprised o f multiple modules. One of thes e modules is the Host Conte xt Agent. The host conte xt agent is installed as part of the MD SM installation and runs continuously in the background. If the host co [...]

86 Configuration: About Y our Host • Change the h ost port identifier alias or user label. • Move or associate a host port identifier to a differ ent host. • Replace a host port identifier with a new host port identifier . • Manually activate an in active host port so th at the port can gain a ccess to host specific or host group specific L[...]

Configuration: About Y our Host 87 • Select the Mappings tab. Right-click the root node (storage array name), Default Group node, or Host Group node in the To p o l o g y pane to which you wan t to add the host, and select Define  Host from the pop-up menu. The Specify Host Name window is displayed. 3 In Host name , enter an up to 30 character[...]

88 Configuration: About Y our Host The Pr e v i e w window is displayed. 11 Click Fi n i s h . Removing Host Access T o r emove host access: 1 In the AMW , select the Mappings tab, select the host node in the To p o l o g y pane. 2 P erform one of these actions: • Select Mappings  Rem o v e . • Right-click the host node and select Rem o v e [...]

Configuration: About Y our Host 89 • Right-click the storage array or the Default Group, and sele ct Define  Host Group from the pop-up menu. 4 T ype the name of the new host group in Enter new host group name . 5 Select the appropriate hos ts in the Select hosts to add ar ea. 6 Click Add . NOTE: T o remove hosts, select the hosts in the Hosts[...]

90 Configuration: About Y our Host 4 Click Ye s . The host is moved to the selected ho st group with the following mappings: • The host retains the specific virt ual disk mappings assi gned to it. • The host inherits the virtu al disk mappings assigned to the host group to which it is moved. • The host lose s the virtual disk mappings assigne[...]

Configuration: About Y our Host 91 • Changing a host type MDSM automatically detect s these changes for any host running the host agent software. Starting or S topping the Host Co ntext Agent The host context agent discovers the host topology and starts and stops with the host. The topology discovered by th e host context agent can be viewed by c[...]

92 Configuration: About Y our Host 3 If the host context agent is runni ng, click Action  Stop , then wait approx imately 5 seconds. 4 Click Action  Start . I/O Data Path Protection Y ou can have multiple host-to-array co nnections for a host. Ensur e that you select all the connections to the array when configuring ho st access to the storag[...]

Configuration: About Y our Host 93 Managing Host Port Identifiers Y ou can manage the h ost port identifiers tha t are added to the storag e array . Y ou can: • Add—Add or associate a new hos t port identifier to a particular host. • Edit—Change the host port identif ier alias or user l abel. Y ou can move (associate) the host p ort identif[...]

94 Configuration: About Y our Host 5 Select the method to add a host port identifier to the host. Y ou can select: • Add by selecting a know unasso ciated host port identifier —Select the appropriate host port identifier from the existing list of Known unassociated host port identifiers. • Add by creating a new host port identifier —In New [...]

Configuration: Disk Groups and Virtua l Disks 95 9 Configuration: Disk Groups and V irtual Disks Creating Disk Groups and V irtual Disks Disk groups ar e created in the unconfi g ured capacity of a storage array , and virtual disks ar e created in the fr ee capacity of a disk group. The maximum number of physical disks supported in a disk group is [...]

96 Configuration: Disk Groups and V irtual Disks A disk group must be organized accor ding to its related tasks and subtasks. F or example, if you cr eate a disk gr oup for the Accounting Department, you can cr eate virtual disks that mat c h the different types of accounting transactions performed in the depa rtment: Accounts Receivable (AR), Acco[...]

Configuration: Disk Gr oups and V irtual Disks 97 3 T ype the name of the disk group (up to 30 characters) in Disk group name . 4 Select the appropriate Physical Disk selection choices , you can select: • A utomatic , see step 6 • Manual , see step 9 5 Click Next . 6 F o r Au tomatic configuration, The RA I D L e v e l a nd C a p a ci t y windo[...]

98 Configuration: Disk Groups and V irtual Disks Locating a Disk Group Y ou can physically locate and identify al l of the physical disks that comprise a selected disk group. An LED blinks on each physical disk in the disk gro up. T o locate a disk group: 1 In the AMW , select the Lo gi c al tab. 2 Select the appropriate disk grou p and from the to[...]

Configuration: Disk Gr oups and V irtual Disks 99 NOTE: Ensure that you create disk gr oups before creating virtual disks. T o cr eate virtual disks: 1 Choose one of these methods to start the Create V irtual Disk W izard : • T o cr eate a virtual disk from unconfigured capacity in the storage array—On the Lo gi c a l tab, select an Unconfigure[...]

100 Configuration: Disk Groups and V irtual Disks 5 In Advanced virtual disk parameters , you can select: • Use recommended settings . • Customize settings . 6 Click Next . 7 In the Customize Advanced V irtual Disk P arameters window , sel ect the appropriate Virtual Disk I/O characteristics type. Y ou can select: • F ile system (typical) •[...]

Configuration: Disk Gr oups and V irtual Disks 101 T o change the virtual disk modification priority : 1 In the AMW , select the Log ic al tab. 2 Select a virtual disk. 3 In the toolbar , sele ct Vi r t u a l D i s k  Change  Modification P riority . The Change Modi fication P riority window is displayed. 4 Select one or more virtual disks. T[...]

102 Configuration: Disk Groups and V irtual Disks To c h a n g e t h e v i r t u a l disk cache settings: 1 In the AMW , select the Lo gi c al tab and select a virtual disk 2 In the toolbar , select Vi r t u a l D i s k  Change  Cache Settings . The Change Cache Settings window is displayed. 3 Select one or more virtual disks. T o select nona[...]

Configuration: Disk Gr oups and V irtual Disks 103 5 Click OK . A message prompts you to confirm the change in the virtual disk modification priority . 6 Click Ye s . 7 Click OK . Changing the Segment Size of a Virtual Disk Y ou can change the segme nt size on a selected virtual disk. During this operation, I/O performance is affect ed, but you r d[...]

104 Configuration: Disk Groups and V irtual Disks T o change the segment size of a virtual disk: 1 In the AMW , select the Lo gi c al tab and select a virtual disk. 2 Select Vi r t u a l D i s k  Change  Segment Size . 3 Select the requir ed segment size. A message prompts you to confirm the selected se gment size. 4 Click Ye s . The segment [...]

Configuration: Disk Gr oups and V irtual Disks 105 T o change the I/O type: 1 Select from these virtual disk I/O ch aracteristic types, based on your application needs: • F ile system (typical) • Database •M u l t i m e d i a •C u s t o m The corr esponding dynamic cache read pr efetch se tting and segment siz e values that are typically we[...]

106 Configuration: Disk Groups and V irtual Disks Phy sical Disk Security with Self Encrypting Disk Self encrypting disk (SED ) technology pr events unauthorized access to the data on a physical disk that is physica ll y removed from the storage array . The storage array has a security k ey . Self en crypting disks prov ide access to da ta only thr[...]

Configuration: Disk Gr oups and V irtual Disks 107 T able 9-1 shows how to interpret the security status of a disk group. The Physical Disk Security m enu is displayed in the Storag e Array menu. The Physical Disk Security menu has these options: •C r e a t e S e c u r i t y K e y • Change Se curity K ey •S a v e S e c u r i t y K e y F i l e[...]

108 Configuration: Disk Groups and V irtual Disks The Cr eate a secur e disk group opti on is displayed in the Cr eate Disk Group W iz ard - Disk Group Name and Physica l Disk Sele ction dialog . The Create a secure disk group option is active only when these conditio ns are met: • A security key is installed in the storage array . • At least o[...]

Configuration: Disk Gr oups and V irtual Disks 109 T o cr eate a security k ey : 1 In the AMW toolbar , select Storage Array  Physical D isk Securi ty  Create Security K ey . The Create Security K ey window is displayed. 2 Enter a string that becomes part of the secur e key identifier , in Security key identifier . Y ou can enter up to [...]

110 Configuration: Disk Groups and V irtual Disks After you have cr eated a security k ey , yo u can create secur e disk groups from security capable physical disks. Cr ea ting a secure disk group mak es the physical disks in the disk group secu rity-enabled. Security-enabled physical disks enter Security L ocked status whenever power is re-applied[...]

Configuration: Disk Gr oups and V irtual Disks 111 3 In Secure key identifier , enter a string that becomes part of the secur e key identifier . Y ou may leave the text box blank, or enter up to 189 alpha numeric characters without white space, punc tuation, or symbols. Additional characters ar e generated automatically . 4 Edit the default path by[...]

112 Configuration: Disk Groups and V irtual Disks T o save the security k ey for the storage array : 1 In the AMW toolbar , select Storage Array  Physical Disk S ecurity  Save Security K ey Fi l e . The Save Security K ey F ile - Enter P ass Phrase window is displayed. 2 Edit the defaul t path by adding a file name to the end of the path o[...]

Configuration: Disk Gr oups and V irtual Disks 113 the appropriate security key must also be imported to the new storage array . Otherwise, the data on the security enab led physical disks that were moved is inaccessible. F or more information on validating the security k ey , see the Po w e r V a u l t Modular Disk S torage Manage r online help to[...]

114 Configuration: Disk Groups and V irtual Disks Configuring Hot Spare Phy sical Disks Guidelines to configure host spar e physical disks: • Y ou can use only unas signed physical dis ks with Optimal statu s as hot spare physical disks. • Y ou can unassign only hot spar e physical disk s with Optimal, or Standby status. Y ou cannot unassi gn a[...]

Configuration: Disk Gr oups and V irtual Disks 115 • Right-click the physical disk and select Hot Spare Coverage from the pop-up menu. The Hot Spare Physical Disk Options window is dis played. 4 Select the appropriate opti on, you ca n select: • View/change curr ent hot spar e covera ge—to review hot spar e coverage and to assign or unassign [...]

116 Configuration: Disk Groups and V irtual Disks A hot spar e is an idle, powered-on, stand-by physical disk r eady for immediate use in ca se of disk failure. If a hot sp ar e is defined i n an enclosur e in which a redundant virtual disk experiences a phy sical d isk fail ur e, a r ebuild o f the degraded virtua l disk is automatically in itiate[...]

Configuration: Disk Gr oups and V irtual Disks 117 If there ar e secure disk groups and secu rity capable disk gr oups in the storage array , the hot spare physical disk must match the security capabil ity of the disk group. F o r e xample, a non-security capable physical di sk cannot be used as a hot spare for a secur e disk group. NOTE: For a sec[...]

118 Configuration: Disk Groups and V irtual Disks attempts to choose physical disks that provide enclosure loss protection. If you choose to create a disk group by using the Manual method, you must use the criteria specif ied in T able 9-2. T able 9-2. Criteria for Enclosure Loss Protection RAID Level Criteria for Enclosure Loss Protection RAI D l [...]

Configuration: Disk Gr oups and V irtual Disks 119 Host-to-V irtual Disk Mapping After you creat e virtual di sks, you must map them to the host(s) connected to the array . Guidelines to configure ho st-to-virtual disk mapping: • Each virtual disk in the storage array can be mapped to only one host or host group. • Host-to-virtual disk mappings[...]

120 Configuration: Disk Groups and V irtual Disks 1 In the AMW , select the Mappings tab. 2 In the To p o l o g y pane, select: •D e f a u l t G r o u p • Undefined mappings node • I ndividual defi ned mappi ng • Host group •H o s t 3 In the toolbar , select Mappings  Define  Additional Mapping . The Define Additional Mappi ng windo[...]

Configuration: Disk Gr oups and V irtual Disks 121 Modifying and Removing Host-to-Virtual Disk Mapping Y ou can modify or remove a host-to-virtu al disk mapping fo r several reasons, such as an incorr ect mapping or r econfiguration of the storage array . Modifying or removing a host-to-virtual disk mapping applies to both hosts and host groups. T [...]

122 Configuration: Disk Groups and V irtual Disks 8 Restart the hos t applications. Changing Controlle r Ownership of the Virtual Disk If the host has a single data-path to the MD storage array , the virtual disk must be owned by the controller to which the host is connected. Y ou must configure this storage array before yo u start I/O oper ations [...]

Configuration: Disk Gr oups and V irtual Disks 123 3 P erform one of these actions: • Select Mappings  Re m o v e . • Right-click the virtual disk, and select Remove Mappi ng from the pop-up menu. 4 Click Ye s to r emove the mapping. Changing the RAID Controller M odule Ownership of a Disk Group Y ou can change the R AID controller module ow[...]

124 Configuration: Disk Groups and V irtual Disks The ownership of the disk group is ch anged. I/O to the disk group is now directed through this I/O path. Y ou are finished with this procedure. NOTE: The disk group may not use the new I/O path until the multi-path driver reconfigures and recognizes the new path. This action usually takes less than[...]

Configuration: Disk Gr oups and V irtual Disks 125 Note the virtual disk that you want to delete from the mapping . F or e xample, the following information may be displayed: mpath6 (3600a0b80000fb6e50000000e487b02f5) dm-10 DELL, MD32xx [size=1.6T][features=3 queue_if_no_path pg_init_retries 50][hwhandler=1 rdac] _ round-robin 0 [prio=6][active] [...]

126 Configuration: Disk Groups and V irtual Disks 7 If a new L UN is mapped or volume capacity is changed, run the following command: # rescan_dm_devs 8 Use the multipath -ll command to verify that: • If a new L UN is mapped, the new L UN is detected and given a multi- pathing device node • If you increased volume capacity , the new capacity is[...]

Configuration: Disk Gr oups and V irtual Disks 127 Mappings area. If additional mappings are defined for one of these Unidentified Mappings, the Define Additional Mappi ng dialog shows the LU N l i s t , a n d t h e Add button is unavaila ble. • Do not con figure dual mappings on a W indows hos t. • If t he re is a ho s t wi t h a re s tr i ct [...]

128 Configuration: Disk Groups and V irtual Disks source virtual disk. When the virtual di sk copy is completed or is stopped, ownership of the targ et virt ual disk is restor ed to its preferr ed RAID controller module. If ownership of th e source virtual disk is changed during the virtual disk copy , ownership of the target virtua l disk is also [...]

Configuration: Disk Gr oups and V irtual Disks 129 c Select Disk Group  Change  Ownership/P referred P ath . Alternatively , you can right-cl ick the disk group and select Change  Ownership/P referred P ath from the pop-up menu. d Select the R AID controller module. CAUTION: Possible loss of data access– C hanging ownership at the disk g[...]

130 Configuration: Disk Groups and V irtual Disks 3 Select Disk Group  Change  RA I D L e v el . 4 Select the RAID level (R AID level 0, RAID level 1, R AID level 5, or RAID level 6). The curr ently selected option is designated with a dot. 5 Click Ye s . The R AID level operation begins. Storage Partitioning A storage partiti on is a logical[...]

Configuration: Disk Gr oups and V irtual Disks 131 Storage partitioning is unavailable when: • No valid host group s or hosts exist in the T opology pane on the Map pings tab. • No host ports are defined for the host being included in the st orage partition. • All mappings are defined. NOTE: Y ou can include a secondary virtual di sk in a sto[...]

132 Configuration: Disk Groups and V irtual Disks NOTE: If the RAID level of the disk group is RAID level 5, or RAID level 6, and the expansion enclosure has enclosure loss protection, Display only phy sical disks that ensures enclosure loss protection is displayed and is selected by default. 4 in th e Av ai l a b le p h y s i c al di s k s area, s[...]

Configuration: Disk Gr oups and V irtual Disks 133 Using Unconfi gured Capacity Y ou can increase the capacity of a st andar d virtual disk or a snapshot r epo sitory virt ual disk us ing the unconfigured capacity when no free capacity e xists on a disk group. An incr ease is achieved by adding unconfigur ed capacity , in the form of unassigned phy[...]

134 Configuration: Disk Groups and V irtual Disks • Remote mirror pairs • Mirror repositories Exporting a Disk Group On the source storage array : 1 Save the storage array configuration. 2 Stop all I/O and unmount or dis connect the fil e systems on the virtua l disks in th e disk group . 3 Back up the data on the virt ual disks in the disk gro[...]

Configuration: Disk Gr oups and V irtual Disks 135 On the tar get storage array : 1 Insert the e xported physical disks into the available physical disk slots. 2 Review the Import Report for an overview of the disk group that you are importing. 3 Check for non-imp ortable components. 4 Confirm that you want to proceed with the import procedure. NOT[...]

136 Configuration: Disk Groups and V irtual Disks Storage Array Media Scan The media scan is a ba ckground operat ion that exami nes virtual disks to verify that data is accessible. The pr oces s finds media er rors befor e normal r ead and write activity is disrupted and r eports errors to the event log. NOTE: Y ou cannot enable background media s[...]

Configuration: Disk Gr oups and V irtual Disks 137 The media scan durati on specifies the number of days for which the media scan runs on the selected virtual disks. 5 T o disable media scan s on an individual vir tual disk, s elect the virtual disk in the Select virtual disks to scan area, and deselect Scan selected virtual disks . 6 T o enable me[...]

138 Configuration: Disk Groups and V irtual Disks book.book Page 138 Tuesday, September 27, 2011 3:25 PM[...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 139 10 Configuration: Premium Feature— Snapshot V irtual Disks NOTE: If you order ed this feature, you recei ved a Premium Feature Activation card shipped in the same box as your Dell PowerV ault MD storage array . Follow the directions on the card to obtain a key file and to enable the fe[...]

140 Configuration: Premium F eature—Snapshot V irtual Disks repository uses less disk space than a full physical copy , because the only data blocks that ar e stor ed in the snapshot r epository vi rtual disk are those th at have changed sinc e the time of the snapshot. When you create a snapshot virtual disk, specify its location, capacity , sch[...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 141 F riday , at a time between the e nd of th e work day and 11PM. Do not select an end date. Apply the same sc hedule to the second vi rtual disk, then map the two snapshot virtua l disks to your backup host server and perform your r egular backup procedures. Remember to unmap the two re s[...]

142 Configuration: Premium F eature—Snapshot V irtual Disks Enabling and D isabling Snapshot Sche dules A scheduled snapshot operation can be temporarily suspended by disabling the schedule. When a schedule is disa bled, the schedule time r continue s to run but any scheduled snapshot operation do not occur . Scheduled Snapshot Icons Scheduled sn[...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 143 About the Simple Path Using the sim ple path, you can specify : • Snapshot Virtual Disk Name—A user -specified name that hel ps you associate the snapshot virtual d isk to its corr esponding snap shot re pository virtual disk and source virtual disk. • Snapshot Repository Virtual D[...]

144 Configuration: Premium F eature—Snapshot V irtual Disks NOTE: Mapping the sn apshot virtual disk to the node that does not own the source virtual disk before the Snaps hot enabling process is co mpleted can result in the operating sy stem mis-identifying the snapshot virtual disk. Thi s, in turn, can result in data loss on the source virtual [...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 145 2 In the AMW , select the Log ic al tab and select a valid source virtual disk. 3 Select Vi r t u a l D i s k  Snapshot  Create . Alternatively , you can rig ht- click the sou rce virtual disk and select Create Snapshot Virtual Disk from the pop-up menu. The Create Snapshot V irtua[...]

146 Configuration: Premium F eature—Snapshot V irtual Disks 13 T o associate the mapping between the storage array name and th e virtual disk name, r un the host-ba sed SMdevices utility . NOTE: If your operating sy stem requires add it ional instru ctions, you can find those instructions in your ope rating sy stem documentation. Creating a Snaps[...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 147 – Dell recommends placing the snapsh ot r epository virtu al disk within the disk group of the source virtual disk. This ensures that if drives associated with the disk group are moved to another stor age array , all the virtual disks associated with the snapsho t virtual disk r emain [...]

148 Configuration: Premium F eature—Snapshot V irtual Disks The destination of a snapshot repository virtual disk is determined based on the fr ee capacity a vailable in the dis k gr oup. A snapshot repository virtual disk requir es a minimum 8 MB of fr ee capa city . Y o u can choose your pr eferred creation path—simple or advanced—if th e d[...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 149 2 Using your W ind ows system, fl ush the cache to th e source. At th e host prompt, type SMrepassist -f <filename-identifier> and press <Enter>. F or more information, see "SMrepassist Utility" on page 247. 3 Remove the drive letter(s) of the s ource in W indows or[...]

150 Configuration: Premium F eature—Snapshot V irtual Disks 3 Select Vi r t u a l D i s k  Snapshot  Create . Alternatively , you can right- click the source virtual dis k and select Create Snapshot V irtual Disk from the pop-up menu . The Create Snapshot V irtual Disk Wizard - Introduction dialog is displayed. 4 Select Advanced , and click[...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 151 12 Click OK . 13 In the Mappings tab, assign mappings between the snapshot vir tual disk and the host that accesses the snapshot virtual disk. 14 T o r egister the snapshot virtual disk with the host operating system, run the host-based hot_add utility . 15 T o associate the mapping betw[...]

152 Configuration: Premium F eature—Snapshot V irtual Disks • The next available sequence n umber is based on the number of existing snapshots of a source virtual disk. If you delete a sn apshot virtual disk , its sequence number becom es available again. • Y ou must choose a unique name for the snapshot virtu al disk and th e snapshot reposi[...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 153 NOTE: Y ou can add a maximum of two phy sical disks at one time to increase snapshot repository virtual disk capacity . T o e xpand the snapshot r epository virtual disk from MDSM: 1 In the AMW , select the Log ic al tab. 2 Select the snapshot repository virtual dis k for which you want [...]

154 Configuration: Premium F eature—Snapshot V irtual Disks 7 If unassigned physical disks are not available, do you have empty s lots in the e xpansion enclosures? • Y e s, there ar e empty slots—Insert new physical disks by using the information in the initial setup guid e f or your expansion enclosure. Go to step 9. • No , there ar e no [...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 155 A new F ree Capacity node is created and shown in the Lo gi ca l tab if these conditions e xist: •A F ree Capacity node did not exist prior to the addition of capacity . • Not all of the capacity that is added is used to incr ease the capacity of the snapshot repository virtual disk.[...]

156 Configuration: Premium F eature—Snapshot V irtual Disks Preparing Host Servers to Re-create a Snapsho t Virtua l Disk NOTE: Before you create a new snapshot of a sour ce virtual disk, stop any data access (I/O) activity or suspend data transfer to the source virtual disk and snapshot virtual disk to ensure that yo u captur e an accurate snaps[...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 157 Re-creating Snapshot V irtual Disks Y ou can r e-create a snapsh ot virtual disk that you have previously disabled. CAUTION: Possible loss of data redundancy – If the snapshot virtual disk is in Optima l status, it is fi rst disabled prior to being re-cr eated. This action invalidates [...]

158 Configuration: Premium F eature—Snapshot V irtual Disks The associated snapshot r epository virtu al disk must have sufficient capacity to process the rollback operation and th e write operati ons from the host. A t most, the snapsho t repository virtual disk may need twice the size of the base disk, plus additional metadata space equaling ap[...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 159 If an error occurs during the rollback , the operation is paused and the base virtual disk and snapshot virtual di sk displays Needs Attention icons. The R AID controller module also logs th e event to the Major Event Log (MEL). F ollow the Recovery Guru procedure to corr ect the error a[...]

160 Configuration: Premium F eature—Snapshot V irtual Disks 2 Choose one: • Select the snapshot virtual disk, and select Vi r t u a l D i s k  Snapshot  Rollb ack . • Right-click the snapshot virtual d isk and select Rol l b ac k . The Confirm R ollback Snapshot V irtual Disk dialog is dis played. 3 In the Select rollback priority ar[...]

Configuration: Premium Featur e—Sna pshot Virtual Disks 161 Canceling a Sna pshot Rollback WA RN I N G : Risk of data loss: If you cancel a snapsh ot rollback in progress, the base virtual disk may remain in an unusabl e state and the snapshot virtual disk is displayed as failed in the MD stor age management software. Therefore, do not cancel a s[...]

162 Configuration: Premium F eature—Snapshot V irtual Disks book.book Page 162 Tuesday, September 27, 2011 3:25 PM[...]

Configuration: Premium Feature—V irtual Disk Copy 163 11 Configuration: Premium Feature— V irtual Disk Copy NOTE: A virtual disk cop y overwrit es data on the target virtual disk. Before starting a virtual disk copy , ensure that you no longer need the data or back up the data on the target virtual disk. NOTE: If you order ed this feature, you [...]

164 Configuration: Premium F eature—V irtual Disk Copy Reasons to use virtual disk copy include: • Copying data for improved access—As your storage requir ements for a virtual disk change, you can use a virtual disk copy to copy data to a virtual disk in a d isk group that uses drives with larger capacity within the same storage array . Copyi[...]

Configuration: Premium Feature—V irtual Disk Copy 165 formatted with a journaling file system, any attempt to issue a read r e quest to the source virtual disk may be rejected by the storage array R A ID controller modules and result in an erro r message. M ake sur e that the Read-Only attribute for the target virtual disk is di sabled after the [...]

166 Configuration: Premium F eature—V irtual Disk Copy Creating a V irtual Disk Copy for an MSCS Shared Disk T o cr eate a virtual disk copy for a Mi cros oft Cluster Server (MSCS) shar ed disk, create a snapshot of the virtual disk, and then use the snapshot virtual disk as the source for the virtual disk copy . NOTE: An attempt to directly crea[...]

Configuration: Premium Feature—V irtual Disk Copy 167 • T o enable Read-Only permission , select Change  Ta r g e t V i r t u a l D i s k Pe r m i s s i o n s  Enable R ead-Only . NOTE: Write requests to the target virt ual disk are rejected when the Read- Only permission is enabled on the target virtual disk. • T o disable Read-Only pe[...]

168 Configuration: Premium F eature—V irtual Disk Copy Creating a V irtual Disk Copy CAUTION: Possible loss of data – Source virt ual disks that are participating in a virtual disk copy are available for read I/ O activity only while a virtual disk copy has a status of In Progress or Pending. Wr ite requests are allowed afte r the virtual disk [...]

Configuration: Premium Feature—V irtual Disk Copy 169 V irtual Disk Co py and Modificati on Operations If a modifi cation operation is running on a source virtual disk or a target virtual disk, and the virtual disk copy ha s a status o f In P rogress , P ending, or F ailed, the virtual disk copy does not take place. If a modification operation is[...]

170 Configuration: Premium F eature—V irtual Disk Copy Preferred RAID Contro ller Module Ownership During a virtual disk copy , the same R AID controlle r module must own both the source virtual disk and the target vi rtual disk. If both virtual disk s do not have the same pr eferred R AID controller module when the virtual disk copy starts, the [...]

Configuration: Premium Feature—V irtual Disk Copy 171 Copying the V irtual Disk Y ou can create a virtual disk copy by using the Create Copy W izard. CAUTION: Possible loss of data access – A vi rtual disk copy overwrites data on the target virtual disk. A virtual di sk copy autom atically m akes the target virtual disk read-only to hosts. Y o [...]

172 Configuration: Premium F eature—V irtual Disk Copy 7 In the Select target vi rtual disk area, select the appropriate virtual disk 8 In the Select copy priority ar ea , select the relevant copy priority and cli ck Next . The Confirmation window displays the summary of your selections. 9 Ty p e yes and clic k Fi n i s h . NOTE: Operation in Pro[...]

Configuration: Premium Feature—V irtual Disk Copy 173 Setting Copy Priority Y ou can use the Copy Manager to select the rate at which a virtual disk copy completes for a selected co py pair . Y ou ca n change the copy priority for a copy pair at any of these times : • Before the virtual disk copy begins • While the virtu al disk copy has a st[...]

174 Configuration: Premium F eature—V irtual Disk Copy T o stop a virtual disk copy , complete the following steps: 1 In the AMW , select Vi r t u a l D i s k  Copy Manager . The Copy Manager window is dis played. 2 Select the copy pair in the table. 3 Select Copy  Stop . 4 Click Ye s . Recopying a V irtual Disk Y ou can recopy a virtual di[...]

Configuration: Premium Feature—V irtual Disk Copy 175 3 T o ensure that the virtual disk is in Optimal or Disabled status, sele ct the Summary tab, then click Disk Groups & V irtual Disks . 4 Remove the drive letter(s) of th e source and (if mounted ) virtual disk in W indows or un mount the virtual drive(s) in Linux to help guarantee a stabl[...]

176 Configuration: Premium F eature—V irtual Disk Copy 4 Select the copy pair in the table. 5 Select Copy  Re - C o p y . The Re- C op y window is displayed. 6 Set the copy priority . NOTE: There are 5 copy priority rates avail able: lowe st, low , medium, high, and highest. If the copy priority is set at the lowe st rate, I/O activity is prio[...]

Configuration: Premium Feature—U pgrading to High- Performance-T ier 177 12 Configuration: Premium Feature— Upgrading to High-Performance- Ti e r The High P erfo rmance T ier premium featur e on a MD3200 Series array increases the performance of the syst em beyond th at of a MD3200 Series array operating at the standa rd performance le vel. If [...]

178 Configuration: Premium Feature—Upgrading to High-Performance-T ier book.book Page 178 Tuesday, September 27, 2011 3:25 PM[...]

Configuration: Device M apper Multipath for Linux 179 13 Configuration: Device Mapper Multipath for Linux Overview The MD3200 Seri es storage array use s a Linux operating system softwar e framework , known as Device Mapper (DM), to enable multipath capabilities on Linux Host Servers. The DM multip ath functionality is provided by a combination of [...]

180 Configuration: Device Mapper Multipath for Linux Using DM Multipathing Devices NOTE: Using or modifyin g any nodes other than the multipathi ng device nodes can result in array or file sy stem problems, including loss of communication with the array and corruption of the file sy ste m. Avoid accessing any device other than the multipathing devi[...]

Configuration: Device M apper Multipath for Linux 181 Device Mapper Con figuration Steps T o complete the DM multipathing configuration and make the storage available to the Linux host server : 1 Scan for virt ual disks. See "Scan for Newly Added Virtual Disks" on page 181. 2 Display the multipath device topol ogy . See "Display the [...]

182 Configuration: Device Mapper Multipath for Linux # multipath –ll The output must be similar to this ex ample, which shows the output for one mapped virtual disk. mpath1 (3600a0b80005ab177000017544a8d6b92) dm-0 DELL, MD32xx [size=5.0G][features=3 queue_if_no_path pg_init_retries 50][hwhandler=1 rdac][rw] _ round-robin 0 [prio=6][active] _ 5:[...]

Configuration: Device M apper Multipath for Linux 183 DELL is the vendor of the device MD3200 is the model of the device Sdx is the physical path to the ow ning controller for the device Sdcl is the physical path to the no n-owning controller for the device Create a New fdisk Partition on a Multipath Device Node The fdisk comman d allows you to cr [...]

184 Configuration: Device Mapper Multipath for Linux On SLES 11.x hosts, a parti tion node has the format /dev/mapper/mpa th<x>-part<y>, wher e <x> is letter(s) ass igned to the multipathing device and <y > is the partition number . On SLES 10.3 hosts, a part ition node has the format /dev/mapper/m path<x>_part<y>[...]

Configuration: Device M apper Multipath for Linux 185 2 Edit the /etc/multipath.conf file as follows: blacklist { wwid drive_wwid … } or blacklist { device { vendor vendor_string model model_string }; NOTE: RedHat version 6.0 and 6.1 users must re build the initramfs root file image to include the updated configuration file by running the #dracut[...]

186 Configuration: Device Mapper Multipath for Linux T able 13-1. Device Mapper Commands Command Descriptions multipath -h P rints usage informa tion multipath -ll Displays the current multipath topology using all available information (sysfs, the device mapper , path checkers, and so on) multipath Re-aggregates mu ltipathing device with simplified[...]

Configuration: Device M apper Multipath for Linux 187 Limitations and Known Issues • In certain error con ditions with the no_pa th_r etry or the queue_if_no_path feature is set, applications may hang. T o over come these conditions the you must ente r the followi ng command for each affected multipath device: dmsetup message [device] 0 "fai[...]

188 Configuration: Device Mapper Multipath for Linux T roubleshooting Question Answer How can I check if multipathd is running? Ru n t h e fo ll o w i n g c o m m a n d /etc/init.d/multipathd statu s Why does the multipath –ll command output not show any devices? F irst verify if the devices are discover ed or not. The command #cat /proc/scsi/scs[...]

Management: Firmware Downloads 189 14 Management: Firmware Downloads Downloading RAID Controller and NVSRAM Packages A version number exists for each firm ware file. Th e vers ion num ber indicates whether the firmware is a major versio n or a m inor version. Y ou can use the Enterprise Management W indow (EMW) to download and ac tivate both t he m[...]

190 Management: Firmware Downloads Downloading Both RAID Controller and NVSRAM Firmware NOTE: I/O to the array can continue while y ou are upgrading RAID controller and NVSRAM firmware. NOTE: Dell recommends that the firmware and NVSRAM be upgraded during a maintenance period when the array is not being used for I/O. NOTE: The RAID enclosure must c[...]

Management: Firmware Downloads 191 7 Click Tr a n s f e r . K eep these guidelines in mind: –I f t h e Tr a n s f e r button is inactive, e nsure that you either select an NVSR AM file or deselect th e T ransfer NVSR AM file with R AID controller module firmware option. – If the file selected is not valid or is not compatible with the curr ent [...]

192 Management: Firmware Downloads 12 T o locate the dir ectory in which the file to download r esides, click Browse in the Select files area. The Select F ile dialog is displ ayed. 13 Select the file to download. 14 Click OK . 15 If you want to downloa d the NVSR AM file with the R AID controller module firmwar e, select Download NVSR AM file with[...]

Management: Firmware Downloads 193 2 Select Advanced  Maintenance  Download  RA I D C o n t r o l l e r Module NVSRAM or Select the Support tab, and click Download F irmware . In Select download task , select Download R AID controller module NVSRAM and click OK . An error message is di splayed. Click OK to close it and select a compatible [...]

194 Management: Firmware Downloads 8 In the Storage array pane, select th e storage array for w hich you want to download the NVSR AM firmware. Y ou can select more than one storage array . NOTE: The Details pane shows the details of only one storage array at a time. If you select more than one storage array in the Storage array pane , the details [...]

Management: Firmware Downloads 195 Downloading Phy sical Disk Firmware CAUTION: When updating phy sical disk firmware, you must stop all I/O activity to the array to prevent data loss. The physical disk firmware controls vari ous features of the physical disk. The disk array controller (D AC) uses this type of firmware. Physical di sk firmw are sto[...]

196 Management: Firmware Downloads T o download Phy sical Disk F irmware: 1 F rom the AMW , select Advanced  Maintenance  Download  Physical Disk . The Download Physical Disk - Introduction window is displayed. 2 Click Next . The Download Physical Disk F irmware - Add P ackages window is displayed. 3 In the Selected P ackages ar ea, click [...]

Management: Firmware Downloads 197 Downloading MD1200 Series Expansion Module EMM Firmware NOTE: Due to a limitation with Linux, expansion enclosure EM M firmware updates must be performed using out-of-band management only . Failure to do so may result in the host server becoming unrespons ive, and it ma y require a reboot. Y ou can transfer a down[...]

198 Management: Firmware Downloads NOTE: If you click Stop while a firmware download is in progress, the download-in-progress finishes before t he operation stops. The sta tus for the remaining expansion enclosures changes to Canceled . 7 Monitor the progress and completion status of the download to the expansion enclosures. The progress and status[...]

Management: Firmware Downloads 199 controller encounters an e rror while accessing a peer disk, it is unable to r ecover the data and affected sectors ar e added to the unreadable sector log maintained by the controlle r . Other conditions under which sectors are added to the unreadable se ctor log include: • A media error is encountered when try[...]

200 Management: Firmware Downloads book.book Page 200 Tuesday, September 27, 2011 3:25 PM[...]

Management: Installing Array Compone nts 201 15 Management: Installing Array Components Recommended T ools Y ou may need the f ollowing items to pe rform the procedur es in this section: • Key to the system k eylock •# 2 P h i l l i p s s c r e w d r i v e r •W rist grounding stra p book.book Page 201 Tuesday, September 27, 2011 3:25 PM[...]

202 Management: Installing Array Componen ts Front Bezel (Optional) Removing the Front Bezel 1 Using the system key , unlock the front bezel (if lock ed). 2 Lift up the r elease latch next to the keylock. 3 Rotate the left end of the be zel away from the front panel. 4 Unhook the right end of the bezel and pull the bezel away from the system. Figur[...]

Management: Installing Array Compone nts 203 Hard Drives SAFETY : Models AMT , E03J, and E04J Models AMT , E03J, and E04J ar e intended for installation only in restricted access locations as defined in cl 1.2.7.3 of IEC 60950-1:2005. Depending on your configur ation, your array either supports up to twenty f o u r 2 . 5 " S A S h a rd d r iv [...]

204 Management: Installing Array Componen ts Figure 15-3. Removing and Installing a 2.5" Hard-Drive Blank (MD3220 Only) Installing a Hard -Drive Blank 1 If installed, r emove the front bezel . See "Removing the F ront Bezel" on page 202. 2 Insert the hard-drive blank into the dr ive bay until the blank is fully seated. 3 Close the ha[...]

Management: Installing Array Compone nts 205 2 F rom the Modular Disk Storage Manager (MDSM) software, pr epare the drive for r emoval. W a it until the har d-drive indicators on the drive carrier signal that the drive can be r emoved safely . F or more information, see your controller d ocumentation fo r information about hot-swap drive removal. I[...]

206 Management: Installing Array Componen ts Installing a Hard Drive CAUTION: Many repairs may only be done by a certified se rvice technician. Y ou must only perform troublesh ooting and simple repairs as authorized in your product documentation, or as dir ected by the online or telephone service and support team. Damage due to servicing that is n[...]

Management: Installing Array Compone nts 207 Removing a Hard Drive From a Hard-Drive Carrier Remove the scre ws from the slide rails on the har d-drive carrier and separate the har d drive from the carrier . See F igure 15-5 for P o werV ault MD3200 and F igure 15 -6 for P owerV ault MD3220. Figure 15-5. Removing and Installing a Hard Drive Into a [...]

208 Management: Installing Array Componen ts Figure 15-6. Removing and Installing a Hard Drive Into a 2.5" Hard-Drive Carrier 1 screws (4) 2 hard drive 3 SAS screw hole 4 hard-drive carrier 4 1 3 2 book.book Page 208 Tuesday, September 27, 2011 3:25 PM[...]

Management: Installing Array Compone nts 209 Installing a Hard Drive Into a Hard-Drive Carrier 1 Insert the hard dr ive into the hard -d rive carrier with the connector end of the drive at the back. See F igure 15-5. 2 Align the scre w holes on the har d driv e with the back set of holes on the hard-drive carrier . When aligned correctly , the back[...]

210 Management: Installing Array Componen ts 5 Connect all the power cables to the array . 6 T urn on the array and the host server . Figure 15-7. Removing and Installing a RAID Controller Module Blank Installing a RAID Controller Module Blank T o install a R AID controller module blank: 1 Align the blank with the R AID controller module bay 2 Inse[...]

Management: Installing Array Compone nts 211 Removing a RAID Controller Module CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting and simple repairs as authorized in your product documentation, or as direct ed by the online or telephone service and support team. Damage due to servicing t[...]

212 Management: Installing Array Componen ts Installing a RAID Controller Module CAUTION: Many repairs may only be done by a certified se rvice technician. Y ou must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or teleph one service and support team. Damage due to servicin[...]

Management: Installing Array Compone nts 213 Figure 15-9. Opening and Closing the RAID Controller Module Closing the RAID Controller Module CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by th e online or [...]

214 Management: Installing Array Componen ts RAID Controller Module Backup Battery Unit Removing the RAID Controller Module Backup Battery Unit CAUTION: Many repairs may only be done by a certified se rvice technician. Y ou must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online[...]

Management: Installing Array Compone nts 215 Installing the RAID Controller Module Backup Battery Unit CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by th e online or telephone service and support team. D[...]

216 Management: Installing Array Componen ts Power Supply/Cooling Fan Module NOTE: Y our storage array includes two integrated, hot-swappable power supply/cooling fan modules. The array supports two hot-swappable power supply/cooling fan modules. While the array can operate temporaril y with one module, both the modules must be present for proper s[...]

Management: Installing Array Compone nts 217 Figure 15-11. Removing and Installing a Power Supply/Cooling Fan Module Installing a Power Supp ly/Cooling Fan Module CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting and simple repairs as authorized in your product documentation, or as dire[...]

218 Management: Installing Array Componen ts 2 Connect the power cable to the power supply/cooling fan module and plug the cable into a power outlet. 3 Secure the power cable using the strap. See F igure 15-12. Figure 15-12. Securing the Power Cable CAUTION: When connecting the power cable, secure the cable with the strap. NOTE: If the array is pow[...]

Management: Installing Array Compone nts 219 3 Remove the har d drives from: – slots 0 to 2 in P owerV ault MD320 0 – slots 0 to 5 in P owerV ault MD322 0 See "Removing a Hard Drive" on page 204 . NOTE: Mark each hard drive with it’ s sl ot position as you remove it. 4 Slide the control panel out of the chassis after : – P ushing [...]

220 Management: Installing Array Componen ts Figure 15-14. Removing and Installing the Control Panel-PowerV ault MD3220 Installing the Co ntrol Panel 1 Align the control panel with the slot on the ar ray . 2 Slide the control panel into the array until: – The release tab clicks into place in P owerV ault MD3200 . See F igure 15-13. – The releas[...]

Management: Installing Array Compone nts 221 Backplane CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting and simple repairs as authorized in your product documentation, or as direct ed by the online or telephone service and support team. Damage due to servicing that is not authorized by[...]

222 Management: Installing Array Componen ts Figure 15-15. Removing and Installing the RA ID Controller Module/Power Supply Cage 1 screws (6) 2 RAID controller module/power supply cage 2 1 book.book Page 222 Tuesday, September 27, 2011 3:25 PM[...]

Management: Installing Array Compone nts 223 Figure 15-16. Removing and Installin g the Backplane-PowerV ault MD3200 Figure 15-17. Removing and Installin g the Backplane-PowerV ault MD3220 1 screws (5) 2 backplane 3 captive sc rew 1 screws (4) 2 backplane 3 captive sc rew 2 1 3 2 1 3 book.book Page 223 Tuesday, September 27, 2011 3:25 PM[...]

224 Management: Installing Array Componen ts Installing the Ba ckplane 1 Align the hol es on the back plan e with the holes on the array . 2 Tighten the captive scr ew to secur e the backplane to the chassis. See F igure 15-1 6 for P owerV ault MD3200 or F igure 15-17 for P owerV ault MD3220. 3 Replace the screws that secur e the backplane to the c[...]

Management: Firmware Inventory 225 16 Management: Firmware Inventory A storage array is made up of many components, which may include R AID controller modules, physical disks, and enclo sur e management modules (EMMs). Each of these components co ntains firmware. Some versions of firmware ar e dependent on other ve rsions of firmwar e. T o capture [...]

226 Management: Firmware Inventory book.book Page 226 Tuesday, September 27, 2011 3:25 PM[...]

Management: Sy stem Interfaces 227 17 Management: Sy stem Interfaces Microsoft Services V irtual Disk Service The Microsoft V irtual Disk Service (VDS) is a component of the W indows operatin g system. The VDS co mponent util izes thir d-party vendor s pecific software modules, known as providers, to access and configur e third-party storage resour[...]

228 Management: Sy stem Interfaces VSS attaches to the service and uses it to coor dinate the cr eation of snapshot virtual disks on the storag e array . VSS-initiated snap shot virtual disks c an be triggere d through backup to ols, known as requestors. The VSS P rovider Configuration T ool offers the following configuratio n options: • Snapshot[...]

T roubleshooting: Y our Storage Array Software 229 18 T roubleshooting: Y our Storage Array Software Start-Up Routine L ook and listen during t he array ’s start-up routine fo r the indications described in T able 18-1. F or a descri ption of the front- and back-panel indicators, see "Planning: About Y o ur Storage Array" on page 23. NO[...]

230 T roubleshooting: Y our Storage Array Software T o launch the AMW , perform one of these actions: •O n t h e Devices tab, in either the T r ee view or the T able view , double-click a storage array . Alternatively , you can right-click a storage array and select Manage Storage Array from the pop-up men u. •O n t h e Setup tab, select Manage[...]

T roubleshooting: Y our Storage Array Software 231 In the T a ble view , every managed storage array is listed once, r egardless of the number of attachment s it has in the T ree view . After the storage array is contacted by MDSM, an icon representing i ts h a rdw a re s ta t u s i s di s p la y e d . Hardwar e status can be Optimal, Needs Attent [...]

232 T roubleshooting: Y our Storage Array Software NOTE: MDSM may take a few minutes to update a status change to Unresponsive or from Unresponsive. A status change from or to Unresponsive depends on th e network link to the storage array . All other status change updates faster . Storage Array Support Data Y ou can gather various type s of invento[...]

T roubleshooting: Y our Storage Array Software 233 2 Enter a name for the support data file in Specify filename or click Browse to navigate to a previously saved file to overwrite an existing file. The suffix .zip is added automatically to the file if you do not specify a suffix for the fil e. 3 Enter the Execution summary . 4 Click Start . After a[...]

234 T roubleshooting: Y our Storage Array Software Collecting the Phy sical Disk Data Y ou can use the Collect Physical Disk Da ta optio n to colle ct log sens e data from all the physical disks on your storage array . L og sense data consists of statistical informat ion that is mainta ined by each of the physical disks in your stor age array . Y o[...]

T roubleshooting: Y our Storage Array Software 235 The event log shows two types of event views: • Summary view—Shows an even t summary in a table form. • Detail view—Shows details about a selected event. T o view the event log: 1 In the AMW , select Advanced  T roubleshooting  V iew Event L og . The Event Log is displayed. By default[...]

236 T roubleshooting: Y our Storage Array Software Y ou can detect a problem usin g the following indicators: • Non-Optimal status icons • Alert notification messages that are sent to the appropria te destinations • Hardwar e indicator lights The status icons r eturn to Optimal status as problems are resolved. Storage Array Profile The storag[...]

T roubleshooting: Y our Storage Array Software 237 4 T o search the storage array profi le: a Click . b T ype the term that you want to search for in the Fi n d text box. If the term is located on the current tab, the term is highlighted in the storage array profile information. NOTE: The search is limited to the current tab. If you want to search [...]

238 T roubleshooting: Y our Storage Array Software V iewing the Logical Associations Y ou can use the Associated L ogical Elements option to view the logical associations amo ng different virtual disks in a storage array . T o view the associations f or source vi rtual disks, snapshot virtual disks, and snapshot repository virtual disks: 1 In the A[...]

T roubleshooting: Y our Storage Array Software 239 Finding Nodes Y ou can use the Fi n d option to search for a partic ular node on the L ogical tab, the Physical ta b, or the Mappings tab of the AMW . The search may be based on a particular node name, the R AID leve l, virtual disk capacity , or specific fr ee capacity nodes. The search ma y be ba[...]

240 T roubleshooting: Y our Storage Array Software 6 T o search for all nodes based on their virtual disk capacity , perform these steps: a Select F ind all virtual disks with capacity . b T ype the capacity in the GB box. c Specify that the capacity to be ma tched is less than, equal to , or greater than the capacity entered in the GB box. d Go to[...]

T roubleshooting: Y our Storage Array Software 241 1 On the Log ic al tab of the AMW , select one of these virtual disks, and go to the indicated step: • Snapshot virtual disk—Go to step 2. • Snapshot repository virtual disk—Go to step 3. • Source virtual disk—Go to step 4. • T arget virtual disk—Go to step 5. 2 Select Vi e w  Go[...]

242 T roubleshooting: Y our Storage Array Software T o r ecover from an unresponsive storage array : 1 Check the T r ee View in the EMW to see if all storage a rrays are unr esponsive. 2 If any storage arrays are unr espon sive, check the storage management station networ k connection to make sure that it can reach the network. 3 Ensur e that the R[...]

T roubleshooting: Y our Storage Array Software 243 12 F or an in-band managed storage array , make sur e that the host is network accessible by using the ping command to verify that the host can be re ached. T ype one of these commands, and press <Enter>. • ping <host-name> • ping <RAID controller module-IP -ad dress> 13 If th[...]

244 T roubleshooting: Y our Storage Array Software 22 Determine if ther e is an ex cessive am ount of network traffic to one or more R AID controller modules. This problem is self -correcting beca use the EMW softwar e periodically retries to establish communication wi th the RAID controller modules in the storage array . If the storage array was u[...]

T roubleshooting: Y our Storage Array Software 245 4 When you have lo cated the physical dis ks, click OK . The LEDs stop bl inking. If any other blink op erations (Blink Disk Group, Blink Storag e Array , Blink Physical Disk P orts, or Bli nk Expansion Enclosur e) are curr ently being invoked from another storage management station, these LEDs als[...]

246 T roubleshooting: Y our Storage Array Software Blink Physical Disk) ar e curr ently being invoked from another storage management sta tion, these LEDs als o stop blink ing. 5 In the rare case that the LEDs on the expansion enclosur e do not stop blinking, fr om the AMW , select Storage Array  Blink  Stop All Indication s . If the LEDs suc[...]

T roubleshooting: Y our Storage Array Software 247 Clicking Cancel stops the state captur e process, and any r emaining tests do not complete. Any test information that is generated to that point is saved to the state capture file. NOTE: For more informa tion on troubleshoot ing and recovering from failures, see the PowerV ault Modular Disk Storage[...]

248 T roubleshooting: Y our Storage Array Software Unidentified Devices An unidentified node or device occu rs when MDSM cannot access a new storage array . Causes for this error include network connection problems, the storage array is turned off, or the storage array does not e xist. NOTE: Before beginnin g any recovery procedure, make sure that [...]

T roubleshooting: Y our Storage Array Software 249 b Mak e sure that the network can access the host by using the ping command in the foll owing syntax: ping <host-name-or-IP-address-of-the-host> . If the network can access the host, co ntinue to step c. If the network cannot access the hos t, go to st ep d. c Remove the host with the unr esp[...]

250 T roubleshooting: Y our Storage Array Software c Examine the ethernet cables to make sur e that you cannot see any damage and that they are tightly connected. d Make sur e that the applicable network configuration tasks ar e done (for example, the IP addr esses ar e assigned to each contr oller). 5 Mak e sure that the controller firmware is com[...]

T roubleshooting: Y our Storage Array Software 251 Starting or Restarting the Host Context Agent Software The host conte xt agent softwar e module is the softwar e component that r esides on the server or manage ment station th at commun icates w ith the MD3200 Series storage arrays. The SMag ent so ftwar e automatically starts after you reboot the[...]

252 T roubleshooting: Y our Storage Array Software After the program completes the startup pr ocess, te xt similar to the following messages is disp layed: Modular Disk Storage Manager Agent, Version 90.02.A6.14 Built Wed Feb 03 06:17:50 CST 2010 Copyright (C) 2009-2010 Dell, Inc. All rights reserved. Checking device <n/a> (/dev/sg10): Activa[...]

T roubleshooting: Y our Array 253 19 T roubleshooting: Y our Array Safety First—For you and Y our Array CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting and simple repairs as authorized in your product documentation, or as direct ed by the online or telephone service and support team[...]

254 T roubleshooting: Y our Array T roubleshooting Power Supply/Cooling Fan Module CAUTION: Many repairs may only be done by a certified se rvice technician. Y ou must only perform troublesh ooting and simple repairs as authorized in your product documentation, or as dir ected by the online or telephone service and support team. Damage due to servi[...]

T roubleshooting: Y our Array 255 T roubleshooting Array Cooling Problems CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting and simple repairs as authorized in your product documentation, or as direct ed by the online or telephone service and support team. Damage due to servicing that i[...]

256 T roubleshooting: Y our Array c Reseat the EMM module and wai t for 30 seconds. See "Removing an EMM" in the MD1200 and MD 1220 Storage Enclosures Hardwar e Owner's Manual . d T urn on the server . e Check the EMM status LED. f If the LED does not turn Gr een, replace the EMM. If the problem is not r esolved, see "Getting He[...]

T roubleshooting: Y our Array 257 • If the array s tatus LED is solid or blinking amber: a In the AMW , select the Summary tab, and click on Storage Array needs attention . F o llow the listed procedur es in the Recovery Guru(s) and wait for up to 5 minutes to ch eck if the LED has turned blue. See "Recovery Guru" on page 235. b If foll[...]

258 T roubleshooting: Y our Array T roubleshooting Hard Drives CAUTION: Many repairs may only be done by a certified se rvice technician. Y ou must only perform troublesh ooting and simple repairs as authorized in your product documentation, or as dir ected by the online or telephone service and support team. Damage due to servicing t hat is not au[...]

T roubleshooting: Y our Array 259 T roubleshooting Array and Expansion Enclosure Connections 1 V erify that th e R AID controller modu le port link statu s LED and the R AID controller module status LED are solid green for each port that is connected to a cable. If the LEDs are not solid gr een, see "Planning: RAID Controller Mo dules" on[...]

260 T roubleshooting: Y our Array T roubleshooting a We t Storage Array CAUTION: Many repairs may only be done by a certified se rvice technician. Y ou must only perform troublesh ooting and simple repairs as authorized in your product documentation, or as dir ected by the online or telephone service and support team. Damage due to servicing t hat [...]

T roubleshooting: Y our Array 261 T roubleshooting a Damaged Array CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting and simple repairs as authorized in your product documentation, or as direct ed by the online or telephone service and support team. Damage due to servicing that is not a[...]

262 T roubleshooting: Y our Array Invalid Storage Array The R AID controller module is supporte d only in a Dell-supported storage array . Upon installation in the storage array , the controller performs a set of validation checks. The arra y status LED is lit with a steady amber color while the R AID controller module completes these initial tests[...]

T roubleshooting: Y our Array 263 • Backplane/p ower supply failure • T wo or more temperature sensors are unreadable • F ailure to detect or unable to communicate with peer port NOTE: If both RAID controller modules fa il simultaneously , the enclosure cannot issue critical or noncritical even t alarms for any enclosure component. When the e[...]

264 T roubleshooting: Y our Array book.book Page 264 Tuesday, September 27, 2011 3:25 PM[...]

Getting Help 265 20 Getting Help Contacting Dell F o r customers in the United States , call 800- WWW -DELL (800-9 99-3355). NOTE: If you do not have an active Inte rnet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog. Dell provides several online and telepho ne-based support and se[...]

266 Getting Help book.book Page 266 Tuesday, September 27, 2011 3:25 PM[...]

Index 267 Index A Access Virtual Disk, 66 Advanced F eatur e Using Snaps hot and Disk Copy To g e t h e r , 5 4 Advanced F eatur es, 50 Snapshot Repository V irtual Disk, 5 2 Snapshot Virtual Disks, 5 1 Advanced P ath, 146 Array Management T ypes In-Band Manage ment, 6 6 Out-of -Band Management, 6 5 B backplane installing, 2 2 4 re m o v i n g , 2 [...]

Index 268 D Defining a Host, 86 Dell contacting, 2 6 5 Disk Group Creating, 9 6 Expansion, 1 3 1 Export, 1 3 3 E x p o r t i n g , 134 Import, 1 3 4 Lo ca t in g, 9 8 Migration, 1 3 3 Disk Group and V irtual Disk Expansion, 131 Disk Group Operations , 45 Defragmentation, 4 7 Expansion, 4 6 Limit, 4 7 RA I D L e v e l M i g ra ti o n , 4 5 Segment S[...]

Index 269 re m o v i n g , 2 0 4 Har d-Drive Indicator Pa t t e r n s , 2 8 H ard w a re F e a t u re s Back panel featur es, 2 7 F ront panel featur es, 2 4 Hard dr ive indicator patterns, 2 8 P ower indicator codes, 3 0 P ower supply and cooling fan features, 2 9 Host Group Adding, 8 9 Create, 8 8 Moving a Host, 8 9 Removing a host, 8 9 Removing [...]

Index 270 Vi rt u a l D i s k Co p y , 5 3 Monitoring P e rformance, 57 Multi-P ath P referre d and Alternate Controllers and P aths, 5 5 Multi-P ath Software, 54 N Non-Exportable Components, 133 O Other Information, 20 P phone numb ers, 265 Physical Disk Security with Self Encrypting Disk, 106 Physical Disk States, 38 Physical Disks, 38 Erasing Se[...]

Index 271 S Safety , 19 safety , 253 Security Key C h a n g i n g , 110 Creating, 1 0 8 Saving, 1 1 1 Segment Size, 43 Setting a P assword , 71 Setting Copy P riority , 173 Simple P ath, 143 SMAR T , 39 SMr epassist Utility , 247 Snapshot Repository Capacity , 152 Snapshot Virtual Disk Creating using advanced path, 1 4 3 Creating using simple path,[...]

Index 272 connections, 2 5 9 cooling problems, 2 5 5 damaged enclosure, 2 6 1 e xternal connections, 2 5 3 hard drives, 2 5 8 loss of communication, 2 5 3 power supply/cooling fan module, 2 5 4 startup failure, 2 5 3 wet enclosur e, 2 6 0 U Unconfigured Capacity , 133 User Interface AMW , 6 3 EMW , 6 2 Overview , 6 1 Using Go T o , 240 V Vi r t u a[...]