Dell MD3220 manuale d’uso

Dell PowerV ault MD3200 and MD3220 Storage Array s Owner’ s Manual Regulatory Model: E03J Series and E04J Series Regulatory T ype: E03J0 01 and E04J001 book.book Page 1 Tuesday , September 27, 2011 3:25 PM[...]

Notes, Cautions, and W arnings NOTE: A NOTE indicates important information that helps you make b etter use of your computer . CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed. WAR N IN G: A WARNING 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 Series Storage Ar ray . . . . . . . . . . . 20 Dell PowerV ault Modular Disk Storage Manage[...]

4 Contents RAID Controller Module Connectors and Features . . . . . . . . . . . . . . . . . . . . . . . 32 RAID Controller Modul e—Addition al 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 Virtual Disk Operations Limit . . . . . . . . . . . . 45 Disk Group Operations . . . . . . . . . . . . . . . . . . 45 RAID Level Migration . . . . . . . . . . . . . . . . 45 Segment Size Migration . . . . . . . . . . . . . . 45 Virtual Disk Capa city Expansion . . . . . . . . . . 4[...]

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 Virtual Disks . . . . . . . . . . . . . . . . 98 Changing the Virtual Disk Modification Priority . . . . . . . . . . . . . . . 100 Changing the Virtual Disk Cache Se ttings . . . . 101 Changing the Segment Size of a V i[...]

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-Virtual 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 Sn apshot Schedules . . . . . . . . . . . . . . . . . . . . . 142 Creating a Snapshot Virtual Disk Using the Simple Path . . . . . . . . . . . . . . [...]

Contents 11 Resuming a Snapshot Rollback . . . . . . . . . . 160 Canceling a Snapshot Rollback . . . . . . . . . . 161 11 Configuration: Premium Feature— Virtual Disk Copy . . . . . . . . . . . . . . . . . . 163 T ypes of V irtual Disk Copies . . . . . . . . . . . . . . . 16 4 Offline Copy . . . . . . . . . . . . . . . . . . . . . 164 Online Copy[...]

12 Contents Recopying a V irtual Disk . . . . . . . . . . . . . . . . 174 Preparing Host Servers to Recopy a Virtua l 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 Series E xpansion 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 Data . . . . . . . . . . . . . . . 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 Array . . . . . . . . . 253 T roubleshooting Storage Array Startup Failure . . . . 253 T roubleshooting Loss of Communication . . . . . . . 253 T roubleshooting External Connections . . . . . . . . 253 T roubleshooting Power Supply/Cooling Fan Module[...]

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

18 Contents book.book Page 18 Tues day, 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. WAR N IN 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 guid[...]

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

Introduction 21 •T h e Getting Started Guide provides an overview of setting up and cabling your stora ge array . •T h e Deployment Guide provides installation and configuration instructions fo r bo t h s o f tw are a n d h a rdw a re. •T h e Storage Manager CLI Guide provides information about using the command line interface (CLI). • Reso[...]

22 Introduction book.book Page 22 Tues day, September 27, 2011 3:25 PM[...]

Planning: About Y our Storage Array 23 2 Planning: About Y our Storage Array Overview The MD3200 Series storage array is designe d for high availability , offering redundant access to data st orage. It fe atures support for both single and dual R AID controller configuration. The Dell P owerV ault MD32 00 Series st orage array provides 6.0-Gbps SAS[...]

24 Planning: About Y our Storage Array Hardware Features Front-Panel Features and Indicators 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 Tues day, 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 Description 1 Enclosure sta tus LED The encl osure status L ED light s when the enclosure power is on. Lights blue during normal operation. Blinks blue when a h ost server is identifying the enclosur e or when the system[...]

26 Planning: About Y our Storage Array 3 Split mode LED This LED must be unlit as the split mode function is not supported by the MD3200 Series Storage Arrays. 4 System identification button The system identification button on the front control panel can be used to locate a particular enclosure with in a rack. When the button is pushed, the system [...]

Planning: About Y our Storage Array 27 Back Panel Feature s and Indicators 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 Tues day, September 27, 2011 3:25 P[...]

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 Tues day, September 27, 2011 3:25 PM[...]

Planning: About Y our Storage Array 29 Power Supply and Cooling Fan Features The MD3200 Series storage array includes two integrated, hot-swappable power supply/cooling fan modules. Both modules must be in stalled to ensure proper coolin g. The system r equir es at least one of the cooling fans to function to avoid o verheating. A power supply/cool[...]

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

Planning: RAID Controller Modules 31 3 Planning: RAID Controller Modules RAID Controller Modules The R AID controller modules provide high-performance, advanced virtual disk co nfigurat ion, and fault-tole ra nt disk subsystem management. Each R AID controller module contains 2 GB of cache that is mirror ed with the other controller's cache fo[...]

32 Planning: RAID Controller Modules RAID Controller Module Connectors and Features Figure 3-1. MD32 00 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-cont[...]

Planning: RAID Controller Modules 33 9 Controller power LED Lights green when c ontroller power i s on. Off when controller is not powered. 10 SAS IN 0 port link/fault LED Lights gree n when all four links ar e connected. Lights amber when one to 3 links ar e disconnected. Off when all links in the port ar e disconnected or cable is disconnected. 1[...]

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 powe r outage. F or informatio n on removing and installing the BBU, see "R AID C[...]

Planning: RAID Controller Modules 35 Storage Array Thermal Sh utdown The system automatically shuts down 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-volatile memory in the event of power loss. It is not necessary to shut down any MD1200 Series e [...]

36 Planning: RAID Controller Modules Cache Functions and Features Cache Mirroring Cache mirroring function co pies accepted host-write data from the pri mary controller to the partner controller . This action ensures that host-write data is safely mirrored to the partner cont roller before successful completion status is returned to the host. If a [...]

Planning: MD3200 Series St orage Ar ray 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, V irtual Disks, and Disk Groups Physical disks in your storage array provide the physical [...]

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 operations. NOTE: The MD3200 Series storage[...]

Planning: MD3200 Series St orage Ar ray 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 failure of the phys ical disk even though the LED state on the drive in di cates the rebuild was aborted (green for 3 seconds, amber for 3 seco nds, then off for 3 sec[...]

40 Planning: MD3200 Series St orage Array T erms and Concepts 3 P rovide host server access. 4 Create 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 arra y . Unconfigured capacity is th[...]

Planning: MD3200 Series St orage Ar ray T erms and Concepts 41 Using multiple physical disks has the follo wing advantages over usi ng a single 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 ysical[...]

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

Planning: MD3200 Series St orage Ar ray T erms and Concepts 43 Segment Size Disk striping enables data to be wri tten across multiple physical disks. Disk striping enhances performance be cause striped disks are accessed simultaneously . The segment size or stripe element s ize specifies the size of data in a stripe written to a single disk. The MD[...]

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 exampl 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 pa[...]

Planning: MD3200 Series St orage Ar ray T erms and Concepts 45 Virtual Di sk Operations Limit The maximum number of active, concurre nt virtual disk processes per R AID controller module installed in the storage array is four . This limit is applied to the following virtual disk processes: • Background initialization • F oreground initializatio[...]

46 Planning: MD3200 Series St orage Array T erms and Concepts Dynamic segme nt size migration enables the seg ment 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 expected usage. Y ou can change the default value (128 KB) if se gment size usage d[...]

Planning: MD3200 Series St orage Ar ray T erms and Concepts 47 Disk Group Defragmentation Defragmenting consolida tes the free 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 gro[...]

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 operat ions can be changed to address performance requirements of the environment in whi ch the operations are to be e xecut ed. NOTE: Setting a high priority level impact s s[...]

Planning: MD3200 Series St orage Ar ray T erms and Concepts 49 the MD3200 Series storage array does not recognize the migrating metadata and that data is lost. In this case, th e MD3200 Series storag e array initializes the physical disks and marks them as unconfigured capacity . NOTE: Only disk groups and associated virtual disks with all mem ber [...]

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

Planning: MD3200 Series St orage Ar ray T erms and Concepts 51 Host Server -to-V irtual Disk Mapping The host server attached to a storage 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 a[...]

52 Planning: MD3200 Series St orage Array T erms and Concepts online and user -accessible. When 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 pre vious versions of files that have changed since the snap shot was tak en. Snap sh ots are [...]

Planning: MD3200 Series St orage Ar ray T erms and Concepts 53 Vi rtual Disk Copy Virtual disk copy is a pr emium feature to : •B a c k u p d a t a • Copy data from disk groups that use sm aller -capacity physical disks to di sk groups using greater capacity physical disks • Restore snapshot virtual disk data to the source virtual disk. Virtu[...]

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 , th en map the backup virtual disk to the same host [...]

Planning: MD3200 Series St orage Ar ray 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 t he preferr ed path fails, the multi-path sof tware automati cally re-routes I/O requests 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 a ctual usage. If virtual disk ownership is not manually balanced, it is possible for one controller to have the majority of the work, while the other controller is idl e. Limit the number of virtual disks in a disk group[...]

Planning: MD3200 Series St orage Ar ray T erms and Concepts 57 • Le ast path weight with s ubset (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 next 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: • R AID 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 inter val , select how often you want to update the performance stat[...]

Planning: MD3200 Series St orage Ar ray 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. Use this data to make perf ormanc 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 Tues day, 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 Mana gement Window The EMW provides high-level manageme nt 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 resents the initial setup ta sks that guide you through adding storage arrays and c[...]

Configuration: Overview 63 Inheriting the Sy stem Settings Use the Inherit Syst em Settings option to import the operating system theme settings into the MDSM. Im porting system theme settings affe cts features like font t ype, font size, color , and contrast in the MDSM. 1 Open the Inherit System Settings window in o ne of these w ays: • Select [...]

64 Configuration: Overview • Physical tab—Y ou can view the organization of the storage array by R AID controller modules, physica l disks, and other hardwar e components. • Mappings tab—Y ou can define th e hosts, host groups, and host ports. Y ou can change the mappings to grant virt ual disk access to host gr oups 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 management method, data is separate from commands and events. Data travels thro ugh the[...]

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. Unlike out-of -band management, commands and events are mixed with data. NOTE: For detailed info rmation on settin g up in-band and out-of-band management see the Deployment Guide. When[...]

Configuration: About Y our Storage Array 67 NOTE: For Linux, set the default gateway so that broadcast packets are sent to 255.255.255.0. Fo r Red Hat Enterpris e Linux, if no gate way 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 agent must be restarted befo re in-band ma nagement 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 Configuration—Save the configuration parameters in a file that you can use to restore the configuration, or reuse the configuration on another storage array . F or more information, see the P owerV ault Modular Disk Storage Manager online help topics. After you complete the basic steps for conf[...]

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

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 v irtual disk is created or deleted. V iew operations do not change the stora[...]

72 Configuration: About Y our Storage Array Password Guidelines F o llow these guidelines when you create a password: • Use secure passwords for your storage array . A password must be 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 of [...]

Configuration: About Y our Storage Array 73 Adding/Editing a Comment to an Existin g Storage Array A descriptive comment, with an applic able storage array name, is a helpful identification tool. Y ou 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 relev[...]

74 Configuration: About Y our Storage Array Enabling Premium Features Y ou can enable premium 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 Stor[...]

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

76 Configuration: About Y our Storage Array T o change the enclosure order in the Physical pane: 1 In the AMW , select Storage Array  Change  Enclosure Order . 2 F rom the enclosur es list, select the enclosure you want to move and click either Up or Down to move the enclosur e to the new position. 3 Click OK . If you have set a p assword for[...]

Configuration: About Y our Storage Array 77 Configuring E-mail Alerts F or more information on conf iguring al ert notifications, see "Configuring Alert Notifications" on page 76. T o configure e-mail alerts: 1 Open the Configure Alerts dialog by performing one of these actions: • In the T ree view or the T able view on the Devices tab [...]

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 infor matio n. NOTE: Including the contact information in the e-mail alert is optional. 7 Select the e-mail tab to configure the e-mail destinations. • Addi[...]

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 name an d an e-mail send er addr ess for the e-mail addresses to work. • The e-mail addresses that you had p reviously configur[...]

80 Configuration: About Y our Storage Array • Adding an SNMP address—In Community name , type the community name. In T rap destination , type the trap destination, an d click Add . NOTE: The community name is an American Standard Code for Information Interchange (ASCII) string that identifi es a known set of network management stations and is s[...]

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 gauge, an d a battery charger . The learn cycle calibrates the smart battery ga s gauge so that it provides a measurement of the charge of the battery module. A learn cyc[...]

82 Configuration: About Y our Storage Array Setting the Storage Array RA ID Controller Modul e Clocks Y ou can use the Synchron ize RAID Controller Module Clocks optio n to synchronize the stora ge array R AID contr oller module clocks wi th the storage management station. This option ma kes sur e that the event time stamps written by the RAID cont[...]

Configuration: Event Monitor 83 7 Configuration: Event Monitor An event monitor is provided with De ll P owerV ault Modular Disk Storage 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 crit ical 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 dis able the eve nt monitor at a ny time. Disable the event monitor if you do not want the system to send alert notifications. If you are running the event monitor on multiple systems, disabling the event monitor on all but one system pr events the s ending [...]

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

86 Configuration: About Y our Host • Change the host p ort identifier alias or user label. • Move or associate a host port identifier to a differ ent host. • Replace a host port id entifier with a new hos t port identifier . • Manually activate an inactive host port so that the port can gain access to host specific or host group specific LU[...]

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 want to ad d the host, and se lect Define  Host from the pop-up menu. The Specify Host Name window is displa yed. 3 In Host name , enter an up to 30 charact[...]

88 Configuration: About Y our Host The Pr e v i e w window is displa yed. 11 Click Fi n i s h . Removing Host Access T o remove 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 ov e . • Right-click the host node and select Rem ov e fr[...]

Configuration: About Y our Host 89 • Right-click the storage array or the Default Group, and select 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 hosts in the Select hosts to add are a. 6 Click Add . NOTE: T o remove hosts, select the hosts in the Hosts i[...]

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 assigned to it. • The host inherits the virtual disk mappings assigned to the host group to which it is moved. • The host loses the virtual disk mappings assigned t[...]

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 St opping the Host Conte xt 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 running, click Action  Stop , then wait approximatel y 5 seconds. 4 Click Action  Start . I/O Data Path Protection Y ou can have multiple host-to-array co nnections for a host. Ensure that you select all the connections to the array when configuring ho st access to the storage [...]

Configuration: About Y our Host 93 Managing Host Port Identifiers Y ou can manage the host port identifiers that are added to the st orage array . Y ou can: • Add—Add or as sociate a new host port iden tifier to a particular host. • Edit—Change the host port identifier alias or user label. Y ou can move (associate) the host port ide ntifier[...]

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 Virtual Disks 95 9 Configuration: Disk Groups and V irtual Disks Creating Disk Groups and V irtual Disks Disk groups ar e cr eated in the unconfig ur ed capacity of a storage array , and virtual disks ar e created in the fr ee ca pacity 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 according to its r elated tasks and subtasks. F o r example, if you create a disk gr oup for the Accounting Department, you can create virtual disks that matc h the differ ent types of accounting transactions performed in the depa rtment: Accounts Receivable (AR), Accou[...]

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: • Automati c , see step 6 • Manual , see step 9 5 Click Next . 6 F or Automatic configuration, The RA I D L e v el a n d C a p a c i t y window[...]

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 dis k group. An LED bl inks on each physical disk in the disk group. T o locate a disk group: 1 In the AMW , select the Log i ca l tab. 2 Select the appropriate disk grou p and from the t[...]

Configuration: Disk Gr oups and V irtual Disks 99 NOTE: Ensure that you create disk gr oups before creating virtual disks. T o creat e virtual disks: 1 Choose one of these methods to start the Create Virtual Disk W izard: • T o create a virtual disk from unconfigured capacity in the storage array—On the Log i c al tab, select an Unconfigured Ca[...]

100 Configuration: Disk Groups and V irtual Disks 5 In Advanced virtual disk param eters , you can select: • Use recommended settings . • Customize settings . 6 Click Next . 7 In the Customize Advanced V irtual Disk P arameters window , sele ct the appropriate Virtual Disk I/O characteristics type. Y o u 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 Modificati on P riorit y window is di splayed. 4 Select one or more virtual disks.[...]

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 Log i ca l 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 displa yed. 3 Select one or more virtual disks. T o select non[...]

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 Se gment Size of a V irtual Disk Y ou can change the segment size on a selected virtual disk. During this operation, I/O performance is affect ed, but your 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 Log i ca l 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 segment size. 4 Click Ye s . The segment s[...]

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 corresponding dynamic cache r ead pr efetch setting a nd segment size values that are typically wel[...]

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 phy sical disk that is physica lly r emoved from the storage array . The storage array has a security key . Self en crypting disks provide a ccess to data only thro[...]

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 menu is disp layed in the Storage 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 Secu rity 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 Cre ate a secur e disk group option is displayed in the Create Disk Group W izard - Disk Group Name and Physical Disk Se lection dialog . The Create a secure disk group option is active only when these conditions ar e met: • A security key is installed in the storage array . • At least one s[...]

Configuration: Disk Gr oups and V irtual Disks 109 T o create a security ke y : 1 In the AMW toolbar , select Storage Array  Physical Di sk Security  Create Security K ey . The Create Security K ey window is displayed. 2 Enter a string that becomes part of the secure key identifier , in Security key identifier . Y ou can enter up to 189[...]

110 Configuration: Disk Groups and V irtual Disks After you have created a security k ey , yo u can create secur e disk groups from security capable physical disks. Crea ting a secur e disk group makes 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 en ter up to 189 alphanumeric characters without white space, punc tuation, or symbols. Additional characters are generated automatically . 4 Edit the default path by [...]

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

Configuration: Disk Gr oups and V irtual Disks 113 the appropriate security k ey 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 Storage Manager online help top[...]

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 unassigned p hysical disks with Optimal status as hot spare physical disks. • Y ou can unassign only hot spare physical disks with Optimal, or Stand by status. Y o u cannot unassign a ho[...]

Configuration: Disk Gr oups and V irtual Disks 115 • Right-click the physical disk and select Hot Spar e Coverage from the pop-up menu. The Hot Spare Physical Disk Options window is displa yed. 4 Select the appropriate opti on, you can select: • V iew/change current hot spar e coverage—to review hot spare coverage and to assign or unassign ho[...]

116 Configuration: Disk Groups and V irtual Disks A hot spare is an idle, power ed-on, stand-by physical disk r eady for immediate use in case of disk failure. If a hot sp are is define d in an enclosur e in which a redundant virtual disk e xperiences a phy sical di sk failur e, a re build of t he degraded virtual disk is auto matically initiated b[...]

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

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 specifie d 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 create vir tual 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 • Individual defined mapping • Host group •H o s t 3 In the toolbar , select Mappings  Define  Additional Mapping . The Define Additional Mapping window is[...]

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 reconfiguration 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 host app lications. Changing Controller Ow nership 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 befor e yo u start I/O operations [...]

Configuration: Disk Gr oups and V irtual Disks 123 3 P erform one of these actions: • Select Mappings  Rem o v e . • Right-click the virtual disk, an d select Remove Mapping from the pop-up menu. 4 Click Ye s to r emove the mapping. Changing the RAID Controller Mod ule Ownership of a Disk Group Y ou can change the RAID controller module owne[...]

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 example, 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 incr eased volume capacity , the new capacity i[...]

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 Mapping dialog shows the LU N l i s t , a n d t h e Add button is unavailable. • Do not configure dual mappi ngs on a W indows host. • I f t h ere i s a h os t w it h a re st ri ct ed[...]

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 target virt ual disk is restored to its pr eferred R AID 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 c[...]

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 RAID controller module. CAUTION: Possible loss of data access– C hanging ownership at the disk gr[...]

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

Configuration: Disk Gr oups and V irtual Disks 131 Storage partitioning is unavailable when: • No valid host groups or hosts exist in the T opology pane on the Mappings tab. • No host ports are defined for the h ost being included in th e storage partition. • All mappings are defined. NOTE: Y ou can include a secondary virtual di sk in a stor[...]

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 the Ava i l ab l e p h y s ic a l d i s ks area, se[...]

Configuration: Disk Gr oups and V irtual Disks 133 Using Unconfigure d Capacity Y ou can increase the capacity of a st andard virtual disk or a snapshot repository virtual disk us ing the unconfigured capacity when no free capacity exists on a disk group. An increase is achieved by adding unconfigur ed capacity , in the form of unassigned phy sical[...]

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 un mount or discon nect the file systems on th e virtual disks in the di sk group. 3 Back up the data on the virt ual disks in the disk grou[...]

Configuration: Disk Gr oups and V irtual Disks 135 On the tar get s torage arr ay : 1 Insert the exported 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-importabl e components. 4 Confirm that you want to proceed with the import procedure. NO[...]

136 Configuration: Disk Groups and V irtual Disks Storage Array Media Scan The media scan is a backgr ound operat ion that exami nes virtual disks to verify that data is accessible. The pr ocess finds media error s befor e normal read and write act ivity is disrupted and r eports error s to the event log. NOTE: Y ou cannot enable background media s[...]

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

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

Configuration: Premium Featur e—Snapshot V irtual Disks 139 10 Configuration: Premium Feature— Snapshot V irtual Disks NOTE: If you ordered this featur e, you recei ved a Premium Feature Activation card shipped in the same box as your Dell PowerVault MD storage array . Follow the directions on the card to obtain a key file and to enable the fea[...]

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 virtua l disk are those that have changed since th e time of the snapshot. When you create a snapshot virtual disk, specify its location, capacity , sche[...]

Configuration: Premium Featur e—Snapshot V irtual Disks 141 F riday , at a time between the end 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 virtual disk s to your backup host server and perform your regular backup procedures. Remember to unmap the two re sul[...]

142 Configuration: Premium F eature—Snapshot V irtual Disks Enabling and Disa bling Snapshot Schedu les A scheduled snapshot operation can be temporarily suspended by disabling the schedule. When a schedule is disa bled, the schedule timer con tinues to run but any scheduled snapshot operation do not occur . Scheduled Snapshot Icons Scheduled sna[...]

Configuration: Premium Featur e—Snapshot V irtual Disks 143 About the Simple Path Using the simple path, you can specify: • Snapshot Virtual Disk Name—A us er -specified name that helps you associate the sn apshot virtual disk to its corr esponding snapshot reposi tory virtual disk and source virtual disk. • Snapshot Repository Virtual Disk[...]

144 Configuration: Premium F eature—Snapshot V irtual Disks NOTE: Mapping the snapshot 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 d[...]

Configuration: Premium Featur e—Snapshot V irtual 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 source virtual disk and se lect 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 the virtual disk name, run the host-based SMdevices utility . NOTE: If your operating sy stem requires addit ional instructions, you ca n find those instructions in your ope rating sy stem documentation. Creating a Snapshot [...]

Configuration: Premium Featur e—Snapshot V irtual Disks 147 – Dell r ecommends placing the snapsh ot repository virtual disk within the disk group of the source virtual disk. This ensures that if drives associated with the disk group are moved to another storage ar ray , a ll the virtual di sks associated with the snapshot virtu al 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 avail able in the disk gr oup. A snapshot repository virtual disk requir es a minimum 8 MB of fr ee capa city . Y ou can choose your preferred creation path—simple or advanced—if th e disk[...]

Configuration: Premium Featur e—Snapshot V irtual Disks 149 2 Using your W indows system, flush the cache to the source. At the 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 source in W in dows or unm[...]

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 disk 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 N[...]

Configuration: Premium Featur e—Snapshot V irtual Disks 151 12 Click OK . 13 In the Mappings tab, assign mappings between the snapshot virt ual disk and the host that accesses the snapshot virtual disk. 14 T o register the snapshot virtual disk with the host operating system, run the host-based hot_add ut ility . 15 T o associate the mapping betw[...]

152 Configuration: Premium F eature—Snapshot V irtual Disks • The next available sequence numbe r is based on the n umber of existing snapshots of a sour ce virtual disk. If you del ete a snapshot virtual d isk, its sequence number becomes av ailable again. • Y ou mus t choose a unique name for th e snapshot virtual disk an d the snapshot rep[...]

Configuration: Premium Featur e—Snapshot V irtual 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 expand the snapshot repository virtual disk from MDSM: 1 In the AMW , select the Log ic al tab. 2 Select the snapshot repository virtual disk for which you want to [...]

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

Configuration: Premium Featur e—Snapshot V irtual Disks 155 A new F ree Capacity node is created and shown in the Log i c al tab if these conditions exist: •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 increase the capacity of the snapshot repository virtual disk. O[...]

156 Configuration: Premium F eature—Snapshot V irtual Disks Preparing Host Servers to Re -create a Snapshot V irtual Disk NOTE: Before you create a new snapshot of a source 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 capture an accurate snapsho[...]

Configuration: Premium Featur e—Snapshot V irtual Disks 157 Re-creating Snapshot Vi rtual Disks Y ou can re-create a snapshot virtual disk that you have previously disabled. CAUTION: Possible loss of data redundancy – If the snapshot virtual disk is in Optimal stat us, it is first disabled prior to being re-cr eated. This action invalidates the[...]

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

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

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  Rollback . • Right-click the snapshot virtual disk and select Rol lb ac k . The Confirm R ollback Snapshot V irtual Disk dialog is displa yed. 3 In the Select rollback priority area,[...]

Configuration: Premium Featur e—Snapshot V irtual Disks 161 Canceling a Snapsho t Rollback WAR N IN G: Risk of data loss: If you cancel a snapshot 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 snap[...]

162 Configuration: Premium F eature—Snapshot V irtual Disks book.book Page 162 Tuesday, Sept ember 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 copy 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 ordered this featur e, you r[...]

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

Configuration: Premium Feature—V irtual Disk Copy 165 formatted with a journaling file system, any attempt to issue a read r equest to the source virtual disk may be rejected by the storage array R AID controller modules and result in an error mess age. Make sure that the Read-Only attribute for the target virtual disk is di sabled after the virt[...]

166 Configuration: Premium F eature—V irtual Disk Copy Creating a Vi rtual Disk Copy for an MSCS Shared Disk T o create a virtual disk copy for a Mi crosoft Clust er 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 creat[...]

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 Re ad-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 Vi rtual 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. W r ite requests are allowed after the virtual disk [...]

Configuration: Premium Feature—V irtual Disk Copy 169 Vi rtual Disk Copy and Modification Operations If a modification operation is runnin g on a source virtual disk or a target virtual disk, and the virtual disk copy ha s a status of I n P rogr ess, P e nding, 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 RAID controlle r module must own both the source virtual disk and the target vi rtual disk. If both virtual disks do not have the same pr eferr ed R AID controller module when the virtual disk copy starts, the o[...]

Configuration: Premium Feature—V irtual Disk Copy 171 Copying the Vi rtual 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 disk co py automatica lly makes the target virtual disk read-only t o hosts. Y ou[...]

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

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 copy 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 virtual d isk copy has a stat[...]

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 displ ayed. 2 Select the copy pair in the table. 3 Select Copy  Stop . 4 Click Ye s . Recopying a Vi rtual 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, select the Summary tab, then click Disk Groups & V irtual Disks . 4 Remove the drive letter(s) of the so urce and (if mounted) virtual dis k in W indows or unmount the virtual drive(s) in Linu x to help guarantee a stable[...]

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- Co py window is displayed. 6 Set the copy priority . NOTE: There are 5 copy priority rates avail able: lowest, low , medium, high, and highest. If the copy priority is set at the lowest r ate, I/O activity is priorit[...]

Configuration: Premium Feature—U pgrading to High-Performance-T i er 177 12 Configuration: Premium Feature— Upgrading to High-Performance- Ti e r The High P erformance Tier premium featur e on a MD3200 Series array increases the performance of the syst em beyond that o f a MD3200 Series array operating at the standard performance level. If this[...]

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

Configuration: Device M apper Multipath for Linux 179 13 Configuration: Device Mapper Multipath for Linux Overview The MD3200 Series storage array uses a Linux operatin g system software framework, k nown as Device Mappe r (DM), to en able multipath capa bilities 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 modifying 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 devic[...]

Configuration: Device M apper Multipath for Linux 181 Device Mapper Configur ation Steps T o complete the DM multipathing configuration and make the storage available to the Linux host server: 1 Scan for virtual disks. See "Scan for Newl y Added Virtual Disks" on page 181. 2 Display the multipath device topology . See "Display the Mu[...]

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 Mu ltipath Device Node The fdisk command allows you to cre[...]

184 Configuration: Device Mapper Multipath for Linux On SLES 11.x ho sts, a parti tion node has the format /dev/mapper/mpath<x>- part<y>, wher e <x> is letter(s) assig ned 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&g[...]

Configuration: Device M apper Multipath for Linux 185 2 Edit the /etc/multipath.conf file as fo llows: blacklist { wwid drive_wwid … } or blacklist { device { vendor vendor_string model model_string }; NOTE: RedHat version 6.0 and 6.1 users must rebuild 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 information 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 conditions with the no_path_retry or the queue_if_no_path feature is set, applications may hang. T o overcome these conditions the you must ente r the following command for each affected multipath device: dmsetup message [device] 0 "fail_if_[...]

188 Configuration: Device Mapper Multipath for Linux T roubleshooting Question Answer How can I check if multipathd is running? Run t h e f o l l ow i n g co m m a nd /etc/init.d/multipathd status Why does the multipath –ll command output not show any devices? F irst verify if the devices ar e discover ed or not. The command #cat /proc/scsi/scsi [...]

Management: Firmware Downloads 189 14 Management: Firmware Downloads Downloading RAID Controller and NVSRAM Packages A version number exists for each firm wa re file. The ver s ion number indicates whether the firmware is a major ver sio n or a minor version. Y ou can use the Enterprise Management W indow (EMW) to download and ac tivate both the ma[...]

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 . Keep these guidelines in mind: –I f t h e Tr a n s f e r button is inactive, ensure that you either sele ct an NVSR AM file or deselect the T ransfer NVSRAM file with R AID controller module firmware option. – I f the file selected is not valid or is not compatible with the curr ent st[...]

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 displayed. 13 Select the file to download. 14 Click OK . 15 If you want to download the NVSR AM file with the R AID control ler module firmware, select Download NVSR AM file with f[...]

Management: Firmware Downloads 193 2 Select Advanced  Maintenance  Download  RAI D C o nt r o ll e r Module NVSRAM or Select the Support tab, and click Download F irmware . In Select download task , select Download R AID controller module NVSR AM and click OK . An error message is displayed. Click OK to close it and select a compatible fil[...]

194 Management: Firmware Downloads 8 In the Storage array pane, select the stor age array for which you wan t to download the NVSR AM firmwar e. Y ou can sel ect 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, th e detail[...]

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 (DA C) uses this type of firmware. Physical disk firmware store[...]

196 Management: Firmware Downloads T o download Physical 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 area , click Ad[...]

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

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 status 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 recover 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 tryi[...]

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

Management: Installing Array Components 201 15 Management: Installing Array Components Recommended T ools Y ou may need the fol lowing 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, Sept ember 27, 2011 3:25 PM[...]

202 Management: Installing Array Components Front Bezel (Optional) Removing the Front Bezel 1 Using the system key , unlock the front bezel (if locked). 2 Lift up the release latch next to the k eylock. 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. Figure [...]

Management: Installing Array Components 203 Hard Drives SAFETY : Models AMT , E03J, and E04J Models AMT , E03J, and E04J are intended for installation only in r estricted 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 fo ur 2 . 5 " S A S h a r d d r i v e[...]

204 Management: Installing Array Components Figure 15-3. Removing and Installing a 2.5" Hard-Drive Blank (MD3220 Only) Installing a Hard-Drive B lank 1 If installed, remove 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 hand[...]

Management: Installing Array Components 205 2 F rom the Modular Disk Storage Manager (MDSM) software, pr epare the drive for r emoval. W ait until the hard-drive indicators on the drive carrier signal that the drive can be removed safely . F or more information, see your controller documentation fo r information about hot-swap drive removal. If the[...]

206 Management: Installing Array Components Installing a Hard Drive CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting a nd 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 not[...]

Management: Installing Array Components 207 Removing a Hard Drive From a Hard-Drive Carrier Remove the screws from the slide rails on the har d-drive carrier and separate the hard drive from the carrier . See F igur e 15-5 for P owerV ault MD3200 and F igur e 15-6 for P owerV ault MD3220. Figure 15-5. Removing and Installing a Hard Drive Into a 3.5[...]

208 Management: Installing Array Components 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, Sept ember 27, 2011 3:25 PM[...]

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

210 Management: Installing Array Components 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 Inser[...]

Management: Installing Array Components 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 th[...]

212 Management: Installing Array Components Installing 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 directed by the online or telephone service and support team. Damage due to servicing t[...]

Management: Installing Array Components 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 the on line or t[...]

214 Management: Installing Array Components RAID Controller Module Backup Battery Unit Removing the RAID Controller Module Backup Battery Uni t 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 the online [...]

Management: Installing Array Components 215 Installing the RAID Controller Module Backup Batt ery 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 the on line or telephone service and support team. D[...]

216 Management: Installing Array Components 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 wit h one module, both the modules must be present for proper s[...]

Management: Installing Array Components 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 direc[...]

218 Management: Installing Array Components 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, secur e the cable with the strap. NOTE: If the array is pow[...]

Management: Installing Array Components 219 3 Remove the hard drives from: – slots 0 to 2 in P owerV ault MD3200 – slots 0 to 5 in P owerV ault MD3220 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 ushi ng the [...]

220 Management: Installing Array Components Figure 15-14. Removing and Installing the Control Panel-PowerV ault MD3220 Installing the Contro l Panel 1 Align the control panel with the slot on the array . 2 Slide the control panel into the array until: – The r elease tab clicks into place in P owerV ault MD3200 . See F igure 15-13. – The r eleas[...]

Management: Installing Array Components 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 Components 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, Sept ember 27, 2011 3:25 PM[...]

Management: Installing Array Components 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 screw 1 screws (4) 2 backplane 3 captive screw 2 1 3 2 1 3 book.book Page 223 Tuesday, Sept ember 27, 2011 3:25 PM[...]

224 Management: Installing Array Components Installing the Back plane 1 Align the holes on the backpla n e with the holes on the array . 2 Tighten the captive scr ew to secure the backplane to the chassis. See F igur e 15-16 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 chas[...]

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

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

Management: Sy stem Interfaces 227 17 Management: Sy stem Interfaces Microsoft Services Virtual Di sk Service The Microsoft Virtual Disk Service (VDS) is a component of the W indows operating system. The VDS compo nent utilizes t hird-pa rty vendor speci fic software modules, known as providers, to access and configure thir d-party storage resource[...]

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 can be triggered through backup to ols, known as requestors. The VSS P rovider Configuration T ool offers the following co nfiguration optio ns: • Snapshot [...]

T roubleshooting: Y our Storage Array Software 229 18 T roubleshooting: Y our Storage Array Software Start-Up Routine Look and listen during the array’s start-up routine fo r the indications described in T able 18-1. F o r a descri ption of the front- and back-panel indicators, see "Planning: About Y o ur Storage Array" on page 23. NOTE[...]

230 T roubleshooting: Y our Storage Array Software T o launch the AMW , perform on e of these actions: •O n t h e Devices tab, in either the T ree 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 menu. •O n t h e Setup tab, select Manage [...]

T roubleshooting: Y our Storage Array Software 231 In the T able view , every m anaged storage array i s listed once, regardless of the number of attachments it has in the T ree view . After the storage array is contacted by MDSM, an icon representing it s ha rdw a re s ta t us i s d i sp la y ed . Hardwar e status can be Optimal, Needs Attent ion,[...]

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 the network link to the storage array. All other status change updates faster . Storage Array Support Data Y ou can gather various type s of inventory[...]

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 file. 3 Enter the Execution summary . 4 Click Start . After al[...]

234 T roubleshooting: Y our Storage Array Software Collecting the Phy sical Disk Data Y ou can use the Collect Physical Disk Da ta option to collect log sense data from all the physical disks on your storage array . Log sense data consists of statistical information that is maintained by each of the physical disks in your stor age array . Y our T e[...]

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 appropriate de stinations • Hardware indicator lights The status icons re turn to Optimal status as problems are r esolved. Storage Array Profile The storag[...]

T roubleshooting: Y our Storage Array Software 237 4 T o search the storage array profile: 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 f[...]

238 T roubleshooting: Y our Storage Array Software Vi ewing the Logical Associations Y ou can use the Associated Logical Elements option to view the logical associations among di fferent virtual disks in a storage array . T o vie w the associations for source vi rtual disks, snapshot virtual disks, and snapshot repository virtual disks: 1 In the AM[...]

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 tab, 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 free capacity nodes. The search ma y be base[...]

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 enter ed 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  G[...]

242 T roubleshooting: Y our Storage Array Software T o recover from an unr esponsive storage array : 1 Check the T ree V iew in the EMW to see if all storage arrays are unre sponsive. 2 If any storage arrays are unr espon sive, check the storage management station network conne ction to make sure that it can reach the network. 3 Ensure that the R A[...]

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

244 T roubleshooting: Y our Storage Array Software 22 Determine if there is an e x cessive am ount of network traffic to one or more R AID controller modules. This problem is self -corr ecting beca use the EMW software 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 loca ted the physical disks, click OK . The LEDs stop blink ing. If any other b link operations (Blink Disk Group, Blink Storage Ar ray , Blin k Physical Disk P orts, or Blink Exp ansion Enclosure) ar e currently being invok ed from another storage management station, these LEDs als[...]

246 T roubleshooting: Y our Storage Array Software Blink Physical Disk) ar e currently being invoked from another storage management station, these LEDs also stop blinking. 5 In the rare case that the LEDs on the expansion enclosur e do not stop blinking, from the AMW , select Storage Array  Blink  Stop All Indications . If the LEDs successfu[...]

T roubleshooting: Y our Storage Array Software 247 Clicking Cancel stops the state captur e process, and any remaining tests do not complete. Any test information that is generated to that point is saved to the state capture file. NOTE: For more information on trouble shoot 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 beginning a ny recovery procedure, make sure that [...]

T roubleshooting: Y our Storage Array Software 249 b Make sur e that the network can access the host by using the ping command in the following syntax: ping <host-name-or-IP-address-of-the-host> . If the network can access the host, co ntinue to step c. If th e network cannot access the host, go to step d. c Remove the host with the unr espon[...]

250 T roubleshooting: Y our Storage Array Software c Examine the ethernet cables to make sure 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 addresses ar e a ssigned t o each control ler). 5 Make sur e 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 manageme nt station that co mmunica tes with the MD3200 Series storage arrays. The SMag ent software automatically starts after you reboot the ho[...]

252 T roubleshooting: Y our Storage Array Software After the program completes the startup pr ocess, text similar to the following messages is displa yed: 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): Activat[...]

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 service technician. Y ou must only perform troubleshooting a nd simple repairs as authorized in your product documentation, or as dir ected by the online or telephone service and support team. Damage due to servic[...]

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 wait for 30 seconds. See "Removing an EMM" in the MD1200 and MD122 0 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, r eplace the EMM. If the problem is not r esolved, see "Getting He[...]

T roubleshooting: Y our Array 257 • If the array status LED is solid or blinking amber: a In the AMW , select the Summary tab, and click on Storage Array needs attention . F ollow the listed procedures 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 followi[...]

258 T roubleshooting: Y our Array T roubleshooting Hard Drives CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting a nd 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 aut[...]

T roubleshooting: Y our Array 259 T roubleshooting Array and Expansion Enclosure Connections 1 V erify that the RAID controller module port l ink status LED and the R AID controller module status LE D are solid green for each port that is connected to a cable. If the LEDs are not solid green, see "Planning: R AID Controller Modu les" on p[...]

260 T roubleshooting: Y our Array T roubleshooting a Wet Storage Array CAUTION: Many repairs may only be done by a certified service technician. Y ou must only perform troubleshooting a nd 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[...]

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 RAID 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/power sup ply failure • T wo or more temperature sensors are unreadable • F ailur e 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 [...]

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

Getting Help 265 20 Getting Help Contacting Dell F or cus tomers in the United States, call 8 00- WWW -DEL L (800-999-3355). 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, Sept ember 27, 2011 3:25 PM[...]

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

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 Loc a t in g , 9 8 Migration, 1 3 3 Disk Group and Virtual 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 r a t i o n , 4 5 Segment [...]

Index 269 re mo v i n g , 2 0 4 Hard-Drive Indi cator Pa t t e r n s , 2 8 Ha rd wa re F e at u res Back panel features, 2 7 F r ont panel feat ur es, 2 4 Hard drive 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 a Ho[...]

Index 270 Vir t ua l Di s k Co p y , 5 3 Monitoring P erformance, 57 Multi-P ath P r eferred and Al ternate Controllers and P a ths, 5 5 Multi-P ath Software, 54 N Non-Exportable Components, 133 O Other Information, 20 P phone numbers, 2 65 Physical Disk Security with Self Encrypting Disk, 106 Physical Disk States, 38 Physical Disks, 38 Erasing Sec[...]

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 SMrepassist Utility , 247 Snapshot Repository Capacity , 152 Snapshot Virtual Disk Creating using advanced path, 1 4 3 Creating using simple path, 1[...]

Index 272 connections, 2 5 9 cooling problems, 2 5 5 damaged enclosure, 2 6 1 external 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 Vir t u a l[...]