Meridian Data 1 manuel d'utilisation

A subsidiary of A lanco Techn ologies, Inc. SecurStor Astra ES Administration Guide Revision: 1.0 Contact Information Excel Meridian Data, Inc. 3220 Commander Dri ve Ste 10 1 Carroll ton, TX 750 06- 2564 Toll Free: (80 0) 995- 1014 Phone: (972 ) 980-7098 Fax: (972 ) 980-03 75 sales@emdstorage.com support@emdstorage.com http://www.emdstorage.com[...]

Copyright ©20 07 This guide and any accompanying software an d firmware are copyrighted. No part s of this publicati on may be r eproduced, st ored on a retri eval system , or t ransmi tted, in an y form or by any means, electroni c, mechanical, photocopy, recordi ng, or otherwise, wit hout prior written consent except for c opies retain ed b y th[...]

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4 E XCEL M ERIDIAN D ATA Table of Conte nts Chapter 1: Introduct ion to A stra ES ....................................................................... 7 About This Manu al ................................................................................................... 7 Astra ES Overvi ew ......................................................[...]

S ECUR S TOR A STRA ES 5 Cache Poli cy ......................................................................................................... 96 LUN Affini ty .......................................................................................................... 96 Capacity Coercion ............................................................[...]

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S ECUR S TOR A STRA ES 7 Chapter 1: Int rod uct ion t o Ast r a ES This chapter covers the following topics: • About this Manual • Astra ES Overview • Architectural Description • Specifications Thank you for purchasing the SecurStor Astra ES disk array subsyste m from Excel Meridian Data. About This Manua l This Product Manual describes how[...]

8 E XCEL M ERIDIAN D ATA Astra ES Overview Astra ES provides data storage solutions for applications where high performance and dat a protecti on are required. The failure of any single drive will not affect data integrity or acces sibility of the data in a RAID protected logical drive. A defective drive may be replaced without interruption of data[...]

S ECUR S TOR A STRA ES 9 Architectural Des cription The Astra ES is a Fibre Channel or Serial Attached SCSI (SAS) host, SAS+SATA disk, subsystem suitable for Direct Attached Storage (DAS), Storage Area Network (SAN), and Expanded Storage. Only hard disk drives from Excel Meridian Data are approved for use in this solution. All enclosures include a [...]

10 E XCEL M ERIDIAN D ATA Configurable RAID stripe size: 64 KB, 128 KB, 256 KB, 512 KB, and 1 MB stripe size per logical drive. Background task priority tuning: Adjustment of minimum I/O reserved for server use during all background tasks. Hot spares: Multiple global or dedicated hot-spare drives with revert option. Maximum LUNs per subsystem: 256 [...]

S ECUR S TOR A STRA ES 11 Warranty and Support W arranty: Fiv e years complete system limited warranty. Contact Excel Meridian Data for details. Support: Email and phone support . FCC Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference[...]

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S ECUR S TOR A STRA ES 13 Chapter 2: Ast ra ES Inst all at ion This chapter covers the following topics: • Unpacking the Astra ES (below) • Mounting in a rack • Installing disk drives • Making management connections • Connecting power Unpacking the As tra ES The Astra ES box contains the following items: • Astra ES Unit • Quick Start [...]

14 E XCEL M ERIDIAN D ATA Mounting Astra ES in a Rack The subsystem installs in the rack using the supplied mounting rails. Cautions • At least two persons are required to safely lift, place, and attach the Astra ES enclosure into a rack system. • Do not lift or move the Astra ES enclosure by the handles, power supplies or the controller units.[...]

S ECUR S TOR A STRA ES 15 I ns ide of pos t R ac k f ront pos t R ail at t ac hing s c rew (not inc luded) R ail adjus t m ent s c rew R ail R ail at t ac hing s c rew (not inc luded) I ns ide of pos t R ac k bac k pos t Plat e F ront f lange R ail adjus t m ent s c rew R ear f lange Figure 3: Rackmount assembly Installing Disk Driv es Your solutio[...]

16 E XCEL M ERIDIAN D ATA Making Manageme nt and Data Connections For Serial Attached SCSI setup skip to the next section. Fibre Channel Hos t Astra ES models can have one or two RAID controllers. Each controller has an Ethernet (RJ45) Management Port connector that enables you to monitor the Astra ES over your network using the Astra ES Management[...]

S ECUR S TOR A STRA ES 17 On the Astra ES controller, connect one of the Fibre Channel data ports to your Fibre Channel switch. To establish the management path: 1. On the Astra ES controller, connect the Management Port to your network switch. 2. Connect the Host PC’s or Server’s standard NIC to your network switch. Configuring JBOD e xpansion[...]

18 E XCEL M ERIDIAN D ATA Serial Attached SC SI Host Astra ES models can have one or two RAID controllers. Each controller has an Ethernet (RJ45) Management Port connector that enables you to monitor the Astra ES over your network using the Astra ES Management GUI Software. Astra ES supports HTTP(S) and Telnet protocols. The standard Astra ES SAS H[...]

S ECUR S TOR A STRA ES 19 Configuring Cascaded Storage Cascaded storage requires: • One SAS HBA card in the Host PC or Server • A network switch • A network interface card (NIC) in the Host PC or Server To establish the data path: 1. On the Astra ES controller, connect a SAS data port or a SAS data/cascade port to your SAS HBA card. 2. Connec[...]

20 E XCEL M ERIDIAN D ATA Connecting the Power Plug the power cords and switch on both power supplies on. When the pow er is switched on, the LEDs on the front of the Astra ES will light up. Pow er C ont r oller-2 A c t iv it y F R U St at us Logic al D r iv e St at us C ont r oller-1 A c t iv it y C ont r oller H eart beat Figure 6: Astra ES front[...]

S ECUR S TOR A STRA ES 21 Chap ter 3: Ma nag ement wit h As t ra GUI This chapter covers the following topics: • Logging into Astra GUI • Selecting a langua ge • Perusing the interface • Logging out of Astra GUI • W orking w ith the Storage Network • W orking w ith Subsystems • Managing the User Database • Managing the Ethernet Netw[...]

22 E XCEL M ERIDIAN D ATA W hether you select a regu lar or a secure connection, your login to Astra GUI and your user password are always secure. 3. W hen the log-in screen (Figur e 1) appears: • Type administrator in the User Name field. • Type admin in the Password field. • Click the Login button. The User Name and Password are case sensit[...]

S ECUR S TOR A STRA ES 23 Using Tree View Tree View enables you to navigate around all components of the Subsystem, including Fibre Channel or SAS management, network and service management, RAID contr oller, enclosure, physical drives, disk arrays, logical drives, and spare drives. The figure below shows the components of Tree V iew. The Administr[...]

24 E XCEL M ERIDIAN D ATA Figure 8: Clicking logout in the header bar Clicking Logout brings you back to the Login Screen. After logging out, you must enter your user name and password in order to log in again. Working with the Storage Networ k W hen you log int o Astra Management GUI, you access a specific Astra ES subsystem. The Storage Network f[...]

S ECUR S TOR A STRA ES 25 • Viewing and Clearing event logs • Viewing current Background activities • Running Media Patrol • Running PDM • Viewing, Deleting and Scheduling activities • Viewing, Setting, Renewing and Releasing the Lock status Viewing Subsystem Information To view information about a subsystem, click the Subsystem icon in[...]

26 E XCEL M ERIDIAN D ATA • Severity – Information, W arning, Minor, M ajor, C ritical, and Fatal. The severity level is user-specified. • Time – Time and date of the occurrence • Description – A brief description of the event 3. Click on the link at the top of the column by which you want t o sort the events. After you click on the ite[...]

S ECUR S TOR A STRA ES 27 5. In the Save dialog box, name the file, navigate to the folder w here you want to save the log fi le, and click the Save button. Clearing NVRAM Events To clear the NVRAM event log: 1. In Tree View, click the Subsystem icon. 2. In Management View, click the Events tab dropdown menu and select Syste m Events in NVRAM . 3. [...]

28 E XCEL M ERIDIAN D ATA Running Background Activities To run a background activity from the Background Activities tab: 1. In Tree View, click the Subsystem icon. 2. In Management View, click the Background Activities tab and select one of the fo llowing from the dropdown menu. • Media Patrol • Rebuild • PDM • Transition • Initialization[...]

S ECUR S TOR A STRA ES 29 3. In the Scheduler dialog box, check the Enable This Schedule box . 4. Select a start time (24-hour clock). 5. Select a Recurrence Pattern. • Daily – Enter the number of days between events. • W eekly – Enter the number of weeks between events and select which days of the week. • Monthly – Select a calendar da[...]

30 E XCEL M ERIDIAN D ATA The lock prevents other sessions (including by the same user) from making a configuration change to the controller until the lock expires or a forced unlock is done. You can set the lock to last from one minute to one day. To set the lo ck for this subsystem: 1. Click the Subsystem icon Tree View. 2. Click the Lock tab in [...]

S ECUR S TOR A STRA ES 31 Making User Settings To change settings of other users: 1. Log into Astra GUI as the Administrator or a Super User. 2. Click the Subsystem icon in Tree View. 3. Click the Administrative Tools icon. 4. Click the User Management icon. 5. On the Information tab, click the link of the user whose settings you w ant to change. T[...]

32 E XCEL M ERIDIAN D ATA Changing Another User’s Password To change a user’s password: 1. Log into Astra GUI as the Administrator or a Super User. 2. Click the Subsystem icon in Tree View. 3. Click the Administrative Tools icon. 4. Click the User Management icon. 5. In the list of users, click the link of the user whose settings you want to ch[...]

S ECUR S TOR A STRA ES 33 • Maintenance – Allows the user to perform maintenance task s including Rebuilding, PDM, Media Patrol, and Redundancy Check • Power – Allows the user to create (but not delete) disk arrays and logical drives, ch ange RAID levels, change stripe size; change settings of components such as disk arrays, logical dr ives[...]

34 E XCEL M ERIDIAN D ATA To make changes to the Subsystem Management Port settings: 1. Click the Subsystem icon in Tree View. 2. Click the Administrative Tools icon. 3. Click the Network Management icon. 4. Click the Port Configuration link in Management View. 5. To enable DHCP, check the DHCP box. W hen DHCP is NOT enabled, enter: • Primary IP [...]

S ECUR S TOR A STRA ES 35 2. Click the Administrative Tools icon. 3. Click the Fibre Channel Management icon. 4. Click the Node tab in Management View. The current node (data port) settings the Controller are show n, including: • WW NN – World Wide Node Name • Supported Features – Class of service • Maximum Frame Size – 2048 bits • Su[...]

36 E XCEL M ERIDIAN D ATA Port Setting Information The table below shows the type of attached topology you will achieve based on your connection type and the configured topology you select. Fibre Channel Attached Topology Configured Topology Connection Type N-Port NL -Port Switch Fabric Direct Public Loop Direct Point to Point Private Loop Example [...]

S ECUR S TOR A STRA ES 37 • Transceiver Code – Defines the method to interpret the transceiver type and compatibility options • Serial Encoding – Serial encoding algorithm • Bit Rate – In gigabits per second • Link Length – The maximum link length depending the type of fiber • Vendor Name – Vendor name of the SFP transceiver •[...]

38 E XCEL M ERIDIAN D ATA 2. Click the Administrative Tools icon. 3. Click the SAS Management icon. The port information appears the screen. • Channel ID • Port Type • Link Status • Link Speed • SAS Address • Cable Signal Strength – Adjustable under Port Settings Modifying SAS Port Settings A SAS Controller can have one or two SAS cha[...]

S ECUR S TOR A STRA ES 39 Adding an Initiator To add an initiator to the Astra ES initiator list: 1. Check the box to the left of the initiator. 2. Click the Add to Initiator List button. Managing Stor age Services Storage services deal with initiators and LUN mapping for Fibre Channel models and for Serial Attached SCSI models. LUN masking is the [...]

40 E XCEL M ERIDIAN D ATA Enabling LUN Masking To enable the LUN Masking: 1. Click the Subsystem icon in Tree View. 2. Click the Administrative Tools icon. 3. Click the Storage Services icon. 4. Click the LUN Map tab in Management View. 5. Click the LUN Masking Enabled box. 6. Click the Submit button. A dding a LUN Map To edit the LUN Map: 1. Click[...]

S ECUR S TOR A STRA ES 41 The Email sends notification messages to users. To modify Email service settings: 1. Click the Subsystem icon in Tree View. 2. Click the Administrative Tools icon. 3. Click the Email Setting link in Management View. 4. Enter the IP address for your SMTP server. 5. Enter server port number for your SMTP server. 25 is the de[...]

42 E XCEL M ERIDIAN D ATA Starting or Restarting SLP service To start or restart the SLP service, click the Start or Restart button. Managing Web Server Settings Astra ES’s Web Server service connects the Astra GUI to the Astra ES subsystem though your browser. To modify Web Server settings: 1. Click the Subsystem icon in Tree View. 2. Click the [...]

S ECUR S TOR A STRA ES 43 8. Click OK in the confirmation box to restart the Telnet service with your changes. Changing the Startup Set ting 1. Under Startup Type: • Click on the Automatic option to start the service automatically during system startup. Re commended. • Click on the Manual option to start the service manually (the service does n[...]

44 E XCEL M ERIDIAN D ATA 4. Click OK in the confirmation box. Changing the Startup Set ting 1. Under Startup Type: • Click on the Automatic option to start the service automatically during system startup. Recommended. • Click on the Manual option to start the service manually (the service does not start during system startup). 2. Click on the [...]

S ECUR S TOR A STRA ES 45 Managing Netsend Settings Astra ES’s Netsend service sends Astra subsystem events in the form of popup messages to your Host PC and other networked PCs. This service is normally Stopped and set to M anual start. To change the Netsend settings: 1. Click the Subsystem icon in Tree View. 2. Click the Administrative Tools ic[...]

46 E XCEL M ERIDIAN D ATA The Export action saves a text file a designated folder the Host PC. From there, yo u can import the User Database file to other Astra ES subsystems. To export the User Database file: 1. Click the Subsystem icon in Tree View. 2. Click the Administrative Tools icon. 3. Click the Export link in Management View. 4. Click the [...]

S ECUR S TOR A STRA ES 47 Note The Decryption box is grayed out. Decryption is always enabled. Updating the Firmware This procedure is covered in a later chapter of this manual. Firmware must be obtained from Technical Support. Restoring Factor y Defaults Astra ES includes a function to restore the default settings to its Firmw are and Software set[...]

48 E XCEL M ERIDIAN D ATA Shutting Down the Subsystem You can only do part of this function in Astra GUI . Additional action is required, as describe d below. To shutdown the subsystem: 1. Click the Subsystem icon in Tree View. 2. Click the Administrative Tools icon. 3. Click the Shutdown link in Management View. A Shutdown or Restart tab will appe[...]

S ECUR S TOR A STRA ES 49 The controller information appears under the Information tab in M anagement View. Controller information includes: • Controller ID (1 or 2) • Alias, if assigned • Model, if applicable • Status – OK means normal • Readiness Status – Active or Standby • Locate – Click on the button to locate the controller.[...]

50 E XCEL M ERIDIAN D ATA You can set or adjust the follow ing items: • Alias, if assigned • Coercion, enable or disable • Coercion Method • SMART – Self-Monitoring, Analysis, and Reporting System for physical drives. • SMART Polling Interval • W rite Back Cache Fl ush Interval • Enclosure Polling Interval • LUN Affinity Upgradabl[...]

S ECUR S TOR A STRA ES 51 6. Click the Submit button. The changes take effect immediately. Clearing an Orphan Watermark An Orphan Watermark condition is the result of a disk drive failure during an NVRAM RAID level migration on a disk array. To clear an Orphan Watermark: 1. Click the Subsystem icon in Tree View. 2. Click the Controllers icon. 3. Cl[...]

52 E XCEL M ERIDIAN D ATA 1. Click the Subsystem icon in Tree View. 2. Click the Enclosures icon. 3. click the Topology tab in Management View. Enclosure topology refers to the manner in which the data paths among the enclosures are connected: • Individual Subsystem • JBOD Expansion – One Astra ES subsystem plus one or more JBOD expansion sub[...]

S ECUR S TOR A STRA ES 53 The Enclosure – Battery tab displays information about the cache backup battery (or batteries) in the Astra ES subsystem enclosure. To check the batteries: 1. Click the Subsystem icon in Tree View. 2. Click the Enclosures icon. 3. Click the Enclosure icon. 4. Click the Battery tab in Management View. Battery Notes Each b[...]

54 E XCEL M ERIDIAN D ATA 2. Click the Enclosures icon. 3. Click the Enclosure icon. 4. Click the Buzzer tab in Management View. 5. From the Buzzer tab dropdown menu, select Settings . 6. Check the Buzzer Enabled box . 7. Check the Test Buzzer box. 8. Click the Submit button. The buzzer will sound for one minute. Managing Physic al Drives Managing [...]

S ECUR S TOR A STRA ES 55 • Command Queuing (for disk drives that support Command Queuing) • From the DMA Mode dropdown menu, select a DMA mode. For SAS drives, check the boxes to enable: • W rite Cache • Read Look Ahead Cache • Command Queuing (for disk drives that support Command Queuing) • Read Cache 7. Click the Submit button. The f[...]

56 E XCEL M ERIDIAN D ATA 7. Type an alias into the Physical Drive Alias field. Maximum of 32 characters. Use letters, numbers, space betw een words, and underscore. An alias is optional. 8. Click the Submit button. Clearing Stale and PFA Conditions The Clear tab only appears when those conditions are present. • Stale – The physical drive conta[...]

S ECUR S TOR A STRA ES 57 2. Click the Enclosures icon. 3. Click the Enclosure icon. 4. Click the Physical Drives icon. 5. Click on a Physical Drive ic on. 6. Click the Force Offline/Online tab in Management View. 7. Click the Submit button. 8. In the confirmation box, type the word confirm in the field provided. 9. Click the OK button. Managing Di[...]

58 E XCEL M ERIDIAN D ATA • Disk Arrays – The number of physical drives in the disk array , their slot numbers , configurable capacity, and the number of logical drives to be created • Logical Drives – The ID number of the logical drive(s), their RAID level, capacity , and stripe size • Spare Drives – The physical drive slot number of t[...]

S ECUR S TOR A STRA ES 59 The Disk Array Advanced Creation option enables you to directly specify all parameters for a new disk array. One logical drive will be made automatically when you create the disk array. If you select less than the total available capacity, you can use the remaining space to create additional logical drives at a later time.[...]

60 E XCEL M ERIDIAN D ATA Note This function does not automatically create a hot spare drive. After the disk array is created, you can create a hot spare dri ve for it. Deleting a Disk Array The Disk Arrays – Delete tab enables you to delete ex isting disk arrays. Caution If you delete a disk array, you also delete any logical drives that belong [...]

S ECUR S TOR A STRA ES 61 Adjustable Items • Alias – Optional. • Media Patrol – Enabled or disabled. • PDM – Enabled or disabled. Managing Disk A rray Settings To modify Disk Array settings: 1. Click the Subsystem icon in Tree View. 2. Click the Disk Arrays icon. 3. Click the Disk Array icon. 4. Click the Settings tab in Management View[...]

62 E XCEL M ERIDIAN D ATA 15. Review the results. If there is remaining space the disk array, you can create another logical drive, following th e steps above. Each logical drive can have a different set of parameters. 16. Click the Next button when you are done. A new window displays with the disk array information and the proposed logical drives [...]

S ECUR S TOR A STRA ES 63 6. W hen you are done , click the Next button. 7. Select a new RAID Level, if desired. 8. To expand the disk array's capacity, check the Expand Capacity box. 9. If you checked the Expand Capacity box, enter a number into the Capacity field and select the appropriate unit of measure (MB, GB, TB). 10. Under Capacity Usa[...]

64 E XCEL M ERIDIAN D ATA 1. Click the Subsystem icon in Tree View. 2. Click the Disk Arrays icon. 3. Click the Disk Array icon. 4. Click the Background Activities tab in Management View. 5. From the dropdown menu the Background Activities tab, choose Start PDM . 6. In the next screen, select the Source and Target physical drives. The suspect physi[...]

S ECUR S TOR A STRA ES 65 9. Click the Refresh button in your Browser. The drives appear in their new locations and disk array status display s OK. Managing Logic al Drives Logical drives are made from disk arrays. In the Tree, you can see a graphic repre sentation of the logic al drives that belong to each array. You can see a summary of all logic[...]

66 E XCEL M ERIDIAN D ATA 4. Click the Logical Drives icon 5. Click the Logical Drive ic on. To specify an Alias or set the Read and W rite Policies, click the Settings tab. Logical Drive Synchron ization Synchronization is an automatic procedure applied to logical drives w hen they are created. Yes means the logical drive was synchronized. Adjusta[...]

S ECUR S TOR A STRA ES 67 Caution W hen you initia lize a logical drive, all the data the logical drive w ill be lost. Backup any important data before you initialize a logical drive. Initialize a Logical Drive: 1. Click the Subsystem icon in Tree View. 2. Click the Logical Drive Summary icon. 3. Click the icon of the logical drive you want to Init[...]

68 E XCEL M ERIDIAN D ATA 4. Click the Logical Drives icon 5. Click the Logical Drive ic on. 6. Click the Check Table tab in Management View. 7. Click the option for the table you want to see. The default is All tables. If there are entries, they are listed as follows: • Entry Number – A number assigned to each block of entry. • Table Type ?[...]

S ECUR S TOR A STRA ES 69 • Fibre Channel – A Fibre Channel initiator name is the W orld Wide Port Name of the devic e and is composed of a series of eight, tw o-dig it hexadecimal numbers. • SAS – A SAS initiator name is the SAS address of the HBA card in the Host PC. • Alias – Optional. A common name for an iSCSI initiator • Symboli[...]

70 E XCEL M ERIDIAN D ATA • There must be an unconfigured physical drive available for selection as a spare drive. • Be sure the unconfigured physical drive has adequate capacity to replace the largest drive in the disk array. To create a spare drive: 1. Click the Subsystem icon in Tree View. 2. Click the Spare Drives icon. 3. Click the Create [...]

S ECUR S TOR A STRA ES 71 3. Click the Spare Drive ico n. 4. Click the Settings tab in Management View. 5. Select a spare type, Global or Dedicated. Global can be used by any disk array. Dedicated can only be used by the assigned di sk arrays 6. To make a revertible spare drive, check the Revertible box. A revertible spare drive automatically retur[...]

72 E XCEL M ERIDIAN D ATA Running Spare Check Spare Check verifies the operational status of your spare drives. You can also schedule a Spare Check. To check a spare drive: 1. Click the Subsystem icon in Tree View. 2. Click the Spare Drives icon. 3. Click the Spare Check tab in M anagement View. 4. From the Physical Drive dropdown menu, select the [...]

S ECUR S TOR A STRA ES 73 Chapter 4: Maintenance This chapter covers the following topics: • Updating the Firmware • Replacing a Power Supply Unit • Replacing a Cooling Fan Blower • Replacing a Battery Backup Unit • Replacing a RAID controller Updating the Firmw are A firmware update consists of the following actions: • Downloading the [...]

74 E XCEL M ERIDIAN D ATA Restarting the Subsystem Warning Do not restart the Astra ES during a firmware upgrade procedure. W ait unti l the upgrade is one and you are prompted to restart. To restart the Astra ES subsystem: 1. Click on the Subsystem icon in Tree View. 2. Click on the Administrative Tools icon. 3. Click on the Shutdown link in M ana[...]

S ECUR S TOR A STRA ES 75 Figure 11 : Re placing a Power Supply Replacing a Coolin g Unit Blowe r The blower (scroll fan) in each cooling unit is replaced as an indi vidual part. No tools are re quired for this procedure. Remove and Replace a Blower To replace a blower: 1. Verify that the Fan LED is amber or red. F an L ED Figure 12 : Fan LED 2. Pr[...]

76 E XCEL M ERIDIAN D ATA 5. Grasp the top section near the thumbscrews and lift it off the bottom section. Separate the cooling unit section to access the blower. 6. Loos en t he t hum bs c rew s Figure 14 : T humbscrews on blower 7. Removing the top from the cooling unit 6. Lift the blower off the mounting pins and detach the electrical connector[...]

S ECUR S TOR A STRA ES 77 Replacing a Cache Battery The cache battery is located inside the Cooling Unit. The battery is replaced as an individual part. Cautions • Try reconditioning the battery before you replace it. • The battery assembly is replaced as a unit. Do not attempt to disconnect the battery by itself. • Installing the wrong repla[...]

78 E XCEL M ERIDIAN D ATA 6. Detach the connector on the circuit board. Do not detach any other connectors. 7. Lift the battery assembly out of the cooling unit. 8. Place a new battery assembly into the cooling unit. 9. Attach the connector on the circuit board. 10. Install the two screws holding the battery assembly in place to the cooling unit. 1[...]

S ECUR S TOR A STRA ES 79 2. Gently press the handle in and upward until it locks. 3. Connect the Fibre Channel or SAS cables, management, serial, and power cables. Single Controller Subsy stem Removing the old con troller To remove the RAID Controller on a single -controller subsystem: 2. Shutdown the Astra ES via the GUI . 2. Switch off the power[...]

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S ECUR S TOR A STRA ES 81 Chapter 5: T ec hnol ogy Backgr ound This chapter covers the following topics: • Introduction to RAID (below) • Choosing a RAID Level • Choosing a Stripe Size • Choosing a Sector Size • Cache Policy • LUN Affinity • Capacity Coercion • Initialization • Hot Spare Drives • Partition and Format the Logical[...]

82 E XCEL M ERIDIAN D ATA RAID 0 – Stripe W hen a disk array i s striped, the read and write blocks of data are interleaved between the sectors of multiple drives. Performance is increased, since th e workload is balanced between drives or ―members‖ that form the disk array. Identical disk drives are recommended for performance as well as dat[...]

S ECUR S TOR A STRA ES 83 RAID 1 – Mirror W hen a disk array i s mirrored, identical data is written to a pair of drives, while reads are performed in parallel. The reads are performed using elevator seek and load balancing techniques where the w orkload is distributed in the most efficient manner. Whichever drive is not busy and is positioned cl[...]

84 E XCEL M ERIDIAN D ATA RAID 1E – Enhanced Mirror RAID 1E offers the security of mirrored data provided by RAID 1 plus the added capacity of more than tw o disk drives. It also offers overall increased read/write performance plus the flexibility of using an odd number of disk drives. With RAID 1E, each data stripe is mirrored onto tw o disk dri[...]

S ECUR S TOR A STRA ES 85 RAID 5 – Block and Parity Stripe RAID 5 organizes block data and parity data across the physical drives. Generally, RAID Lev el 5 tends to exhibit lower random write performance due to the heavy w orkload of parity recalculation for each I/O. RAID 5 is generally considered to be the most versatile RAID level. D at a Bloc[...]

86 E XCEL M ERIDIAN D ATA RAID 6 – Block and Double Parity Stripe RAID level 6 stores dual parity data is rotated across the physical drives along w ith the bl ock data. A RAID 6 disk array can continue to accept I/O requests when any two physical drives fail. D oub le D is t ribut ed (W ide- s pac e Q+ Q ) Par it y phy s ic al driv es D at a Blo[...]

S ECUR S TOR A STRA ES 87 RAID 10 – Mirror + Stripe Mirroring/striping combines both of the previous RAID 1 and RAID 0 disk array types. RAID 10 is similar though not identical to RAID 0+1. RAID 10 can increase performance by reading and writing data in parallel while protecting data with duplication. At least four drives are need ed for RAID 10 [...]

88 E XCEL M ERIDIAN D ATA RAID 50 – Striping of Distributed Parity RAID 50 combines both RAID 5 and RAID 0 features. Data is striped across disks as in RAID 0, and it uses distributed parity as in RAID 5. RAID 50 provides data reliability, good overall performance and supports larger volume sizes. D at a St ripes D is t ribut ed Parit y D is k D [...]

S ECUR S TOR A STRA ES 89 RAID 50 Array No. of Drives No. of Axles Drives per Axle 6 2 3,3 7 2 3,4 8 2 4,4 9 2 4,5 3 3,3,3 10 2 5,5 3 3,3,4 11 2 5,6 3 3,4,4 12 2 6,6 3 4,4,4 4 3,3,3,3 13 2 6,7 3 4,4,5 4 3,3,3,4 14 2 7,7 3 4,5,5 4 3,3,4,4 15 2 7,8 3 5,5,5 4 3,4,4,4 5 3,3,3,3,3 16 2 8,8 3 5,5,6 4 4,4,4,4 5 3,3,3,3,4[...]

90 E XCEL M ERIDIAN D ATA RAID 60 – Striping of Double Parity RAID 60 combines both RAID 6 and RAID 0 features. Data is striped across disks as in RAID 0, and it uses double distributed parity as in RAID 6. RAID 60 provides data reliability, good overall performance and supports larger volume sizes. D at a St ripes D ouble D is t ribut ed Parit y[...]

S ECUR S TOR A STRA ES 91 RAID 60 Array No. of Drives No. of Axles Drives per Axle 8 2 4,4 9 2 4,5 10 2 5,5 11 2 5,6 12 2 6,6 3 4,4,4 13 2 6,7 3 4,4,5 14 2 7,7 3 4,5,5 15 2 7,8 3 5,5,5 16 2 8,8 3 5,5,6 4 4,4,4,4 17 2 8,9 3 5,6,6 4 4,4,4,5 18 2 9,9 3 6,6,6 4 4,4,5,5 19 2 9,10 3 6,6,7 4 4,5,5,5 20 2 10,10 3 6,7,7 4 5,5,5,5 5 4,4,4,4,4[...]

92 E XCEL M ERIDIAN D ATA Choosing a RAID Le vel There are several issues to consider when choosing the RAID Level for your Astra ES disk array. The following discussion summarizes some advantages, disadvantages, and applications for each choice. RAID 0 Advantages Disadvantages Implements a striped disk array, the data is broken down into blocks an[...]

S ECUR S TOR A STRA ES 93 RAID 1E Advantages Disadvantages Implemented as a mirrored disk array whose segments are RAID 0 disk arrays High I/O rates are achieved thanks to multiple stripe segments Can use an odd number of disks Very high disk overhead - uses only 50% of total capacity Recommended Applications for RAID 1E • Imaging applications ?[...]

94 E XCEL M ERIDIAN D ATA RAID 10 Advantages Disadvantages Implemented as a mirrored disk array whose segments are RAID 0 disk arrays High I/O rates are achieved thanks to multiple stripe segments Very high disk overhead - uses only 50% of total capacity Recommended Applications for RAID 10 • Imaging applications • Database servers • General [...]

S ECUR S TOR A STRA ES 95 Choosing Stripe Size Stripe Size, also called ―Stripe Block Size‖, refers to the size of the data blocks written to, and read from, the physical drives. Stripe Size is specified when you create a disk array. In order to change the Stripe Size of an existing disk array, you must delete the disk array and create a new on[...]

96 E XCEL M ERIDIAN D ATA • Back up your data, then delete your ex isting logical drive and create a new one with a larger sector size. Cache Policy As it is used with Astra ES, the term cache refers to any of several kinds of high-speed, volatile memory that hold data moving from your computer to the physical drives or vice-versa. Cache is impor[...]

S ECUR S TOR A STRA ES 97 To use LUN Affinity you must: • Have two controllers in the subsystem • Enable LUN Affinity under controller settings. Disk Array Creation W hen you cre ate a logical drive using the Advanced method of disk array creation, you can specify the Preferred Controller ID: • Controller 1 – Assign all logical drives to Co[...]

98 E XCEL M ERIDIAN D ATA Capacity Coercion also affects a replacement drive used in a disk array. Normally, w hen an physical drive fail s , the replacement drive must be the same capacity or larger. How ever, the Capacity Coercion feature permits the installation of a replacement drive that is slightly smaller (w ithin 1 gigabyte) than the remain[...]

S ECUR S TOR A STRA ES 99 RAID Level Migr ation To migrate a disk array is to do one or both: • Change its RAID level • Increase the number of disk drives (sometimes called Ex pansio n) Migration takes place on an existing Functional disk array w ithout disturbing the existing data. W hile the disk array is migrating, you can access the data as[...]

100 E XCEL M ERIDIAN D ATA RAID 0 • • RAID 1 RAID 50 • • RAID 10 • RAID 5 • • RAID 1E • RAID 0 • • • RAID 0 RAID 50 • • RAID 10 • • RAID 5 • RAID 1E • • RAID 1 • * Decreases the existing redundancy Important • The Target disk array may require more disk drives than the Source disk array • If the Target disk[...]

S ECUR S TOR A STRA ES 101 You can also run Media Patrol on a disk array. Predictive Da ta Migration (PDM) Predictive Data Migration (PDM) is the migration of data from the suspect disk drive to a spare disk drive, similar to Rebuilding a Logical Drive. But unlike Rebuilding, PDM constantly monitors your disk drives and automatically copies your da[...]

102 E XCEL M ERIDIAN D ATA Following is an example to explain the Transition function. In the example above, there is a four-drive RAID 5 disk array and a global spare drive. Physical drives 1, 2, 3, and 4 belong to the disk array. Physical drive 5 remains unconfigured. P hysic al drive 6 is a revertible spare drive. If a physical drive fails in a [...]

S ECUR S TOR A STRA ES 103 Automatic T ransition At this juncture, you would replace the failed drive in slot 3 w ith a new one of the same or greater capacity. W hen the A stra ES controller detects the new drive in slot 3, it will: • Automatically transition the data on drive 6 to drive 3 • Return drive 6 to spare status W hen the Automati c [...]

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S ECUR S TOR A STRA ES 105 Chapter 6: T roubl eshoot ing This chapter covers the following topics: • Beep Tones • LEDs Display • Astra Web GUI reports a problem • Event Notification Responses • Critical and Offline Disk Arrays • Incomplete Arrays • Physical Drive Problems • Enclosure Problems Beep Tones W hen you first pow er-up the[...]

106 E XCEL M ERIDIAN D ATA Pow er R AI D C ont rol ler 2 Ac t iv it y F R U St at us Logic al D riv e St at us R AI D C ont rol ler 1 Ac t iv it y C ont roller H e art beat Figure 29 : F ront panel LED display on enclosure W hen boot-up is fini shed and the Astra ES is functioning normally: • Controller Heartbeat LED blinks once every two seconds[...]

S ECUR S TOR A STRA ES 107 Drive Status Indicators There are two LEDs on each Drive Carrier. They report the presence of power and a disk drive, and the current condition of the drive. The Astra ES spins up the disk drives sequentially in order to equalize pow er draw during start -up. After a few moments the Power/Activity and Disk Status LEDs sho[...]

108 E XCEL M ERIDIAN D ATA St at us LED D irt y C ac he LED Figure 30 : As tra ES FC (Fibre Channel) controller, rear view St at us LED D irt y C ac he LED Figure 31 : As tra ES SAS (Serial Attached SCSI) controller, rear view Under normal conditions, the Controller Status LED (marked with icon) is green and the Dirty Cache L ED (marked with ) icon[...]

S ECUR S TOR A STRA ES 109 Figure 32 : Example of Yellow (!’s) and Red (X’s) in Tree View of Web GUI • Displays yellow !s red Xs in Tree View. • Sends email messages, per your configuration. • Displays popup messages, per your configuration. • Keeps a record in the Event Log. • Displays full information in Management View. Figure 33 :[...]

110 E XCEL M ERIDIAN D ATA Ev ent Notificatio n Response W hen you se lect Event Notification, Astra ES sends popup and/or email messages regarding its status. The messages you see depend on your notification selection and w hat is currently happening in the Astra ES. The table below cites: • Reported Events – Events that require you to take ac[...]

S ECUR S TOR A STRA ES 111 Reported Event Corrective Action Blowers Blowers have started Normal. Blowers have stopped Verify that the cooling unit is properly installed. If the blower still does not turn, replace the blowers. Blower speed is increased Check the Astra ES for overheating. Blower speed is decreased Temporary overheat condition was cor[...]

112 E XCEL M ERIDIAN D ATA Reported Event Corrective Action Controller The controller parameter(s) changed by user The user successfully change controller settings. The controller has new crash information Check the event logs. Controller temperature is above the threshold/warning threshold The Astra ES controller is overheating. Check for airflow [...]

S ECUR S TOR A STRA ES 113 Reported Event Corrective Action Drive Interface Controller Drive-interface controller found Normal. Drive-interface controller is NOT found Restart the Astra ES. If this message appears repeatedly, contact Technical Support. Drive-interface diagnostics has passed Normal. Drive-interface diagnostics has failed Restart the[...]

114 E XCEL M ERIDIAN D ATA Reported Event Corrective Action Event Log Event logging is enabled Event logging has been successfully enabled. Event logging is disabled Event logging has been disabled. Event log buffer is cleared in RAM The event log was cleared. Event log buffer is cleared in NVRAM The non-volatile RAM event log was cleared. Event lo[...]

S ECUR S TOR A STRA ES 1 15 Reported Event Corrective Action Host Interface Controller Host-interface controller has detected bus reset The initiator sent a reset command. If this message appears repeatedly, contact Technical Support. Host-interface controller has encount ered an unrecoverable error Restart the Astra ES . Host-interface controller [...]

116 E XCEL M ERIDIAN D ATA Reported Event Corrective Action Logical Drive Logical drive initialization has started Result of user action. Normal. Logical drive initialization has completed Logical drive is ready to use. Normal. Logical drive initialization has paused Initialization paused because of user intervention, schedule or a higher priority [...]

S ECUR S TOR A STRA ES 117 Reported Event Corrective Action Media Patrol Media patrol is started Result of settings or user action. Normal. Media patrol is completed Normal. Media patrol is paused Media patrol paused because of user intervention, schedule or a higher priority background activity. Media patrol is resumed Media patrol has resumed aga[...]

118 E XCEL M ERIDIAN D ATA Reported Event Corrective Action Online Capacity Expansion Online capacity expansion has started Result of settings or user action. Normal. Online capacity expansion has completed Normal. Online capacity expansion has paused Expansion paused because of user intervention, schedule or higher priority background activity. On[...]

S ECUR S TOR A STRA ES 119 Reported Event Corrective Action PDM PDM is started Result of settings or user action. Normal. PDM is completed Normal. PDM is paused PDM paused because of user intervention, schedule or a higher priority background activity. PDM is resumed PDM has resumed again after a pause. PDM is stopped PDM stopped because of user in[...]

120 E XCEL M ERIDIAN D ATA Reported Event Corrective Action Ph y sical Disk Physical disk is marked online Disk drive restored to normal operation. Physical disk is marked online Disk drive removed from service due to errors. If necessary, try to force the disk online. Physical disk is marked as dead. Disk drive failure. Replace the disk drive. Phy[...]

S ECUR S TOR A STRA ES 121 A configured dead physical drive has been inserted The disk drive inserted into the Astra ES was marked as dead and will not work on the Astra ES. Replace the disk drive. A physical drive page 0/1 settings have been changed Result of settings or user action. Normal. Physical disk is marked as dead due t o removal/failure [...]

122 E XCEL M ERIDIAN D ATA Reported Event Corrective Action PSU (Power Supply Units) PSU is not inserted/has been removed A power supply unit is missing from the Astra ES . Reinstall the power supply unit. PSU is off A power supply unit is present but turned off. Turn on he power supply. PSU is on Normal. PSU is installed/operational and turned on [...]

S ECUR S TOR A STRA ES 123 Reported Event Corrective Action PSU Fans PSU fan has turned on. Normal. PSU fan has turned off. Verify that the power supply is turned on. If the fan still does not turn, replace the power supply. PSU fan speed increased. Check the Astra ES for overheating. PSU fan speed decreased. Temporary overheat condition w as corre[...]

124 E XCEL M ERIDIAN D ATA Reported Event Corrective Action RAID Level Migration RAID Level migration is started Result of settings or user action. Normal. RAID Level migration is completed Normal. RAID Level migration is paused Migration paused because of user intervention, schedule or a higher priority background activity. RAID Level migration is[...]

S ECUR S TOR A STRA ES 125 Reported Event Corrective Action Rebuild Rebuild is started Result of settings or user action. Normal. Rebuild is completed Normal. Rebuild is paused Rebuild paused because of user intervention, schedule or a higher priority background activity. Rebuild is resumed Rebuild has resumed again after a pause. Rebuild is stoppe[...]

126 E XCEL M ERIDIAN D ATA Reported Event Corrective Action Redundancy Check Redundancy Check is started Redundancy Check has started manually or by schedule. Redundancy Check is completed Redundancy Check has finished. Redundancy Check is paused Redundancy Check paused because of user intervention, schedule or a higher priority background activity[...]

S ECUR S TOR A STRA ES 127 Reported Event Corrective Action Spare Check Spare check started on the given spare drive Result of settings or user action. Normal. Spare check completed successfully on the given spare drive Norma l. (Spare Check Events) Reported Event Corrective Action Spare Drives Physical disk assigned as global spare Result of setti[...]

128 E XCEL M ERIDIAN D ATA Reported Event Corrective Action Stripe Level Migration Stripe Level migration is started Result of settings or user action. Normal. Stripe Level migration is completed Normal. Stripe Level migration is paused Migration paused because of user intervention, schedule or a higher priority background activity. Stripe Level mi[...]

S ECUR S TOR A STRA ES 129 Reported Event Corrective Action Synchronization Synchronization is started Result of settings or user action. Normal. Synchronization is completed Normal. Synchronization is paused Synchronization paused because of user intervention, schedule or higher priority background activity. Synchronization is resumed Synchronizat[...]

130 E XCEL M ERIDIAN D ATA Reported Event Corrective Action Transition Transition is started Result of settings or user action. Normal. Transition is completed Normal. Transition is paused Transition paused because of user intervention, schedule or a higher priority background activity. Transition is resumed Transition has resumed again after a pau[...]

S ECUR S TOR A STRA ES 131 Warning Take no further corrective action until you have consulted with Technical Support. A non-fault tolerant disk array — RAID 0 — goes offline when a disk drive is removed or fails. Since the disk array is not fault tolerant, the data stored in the disk array is no longer accessible. If one disk drive fails, all o[...]

132 E XCEL M ERIDIAN D ATA During rebuilding, you can still read and write data to the logi cal drive. However, fault tolerance is lost until the Disk Array returns to OK (not-rebuilding) status. After a successful rebuild: • The alarm is silent • The Disk Array’s Operationa l Status as OK • The rebuilt disk drive Status LED displays steady[...]

S ECUR S TOR A STRA ES 133 Physical Drive Failed W hen physi cal drive status shows failed , the physical drive cannot be repaired. You must replace the failed drive. Physical Drive Fails durin g Migration Astra ES has two methods for migrating a disk array: • DDF – The default setting. Slower but reliable • NVRAM – An optional setting that[...]

134 E XCEL M ERIDIAN D ATA Enclosure Problem s Astra Web GUI displays yellow !s red Xs in Tree View to identify components that need attention. Wh en a y ellow ! appears over a Subsystem in Tree View, click on the Enclosure icon. The Enclosure screen will display (below). Overheating Overheating is a potentially serious condition because the excess[...]

S ECUR S TOR A STRA ES 135 Power Supplies Astra ES are equipped with redundant power supplies. The advantage of dual power supplies is that, should one fail, the other will continue powering the subsystem until the faulty one can be replaced. Astra ES is capable of operating on a single power supply. As a result, if one power supply fails you must [...]

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S ECUR S TOR A STRA ES 137 Append ix A: SNMP MIB Fil es The appendix covers the following topics: • SNMP MIB files SNMP MIB F iles These fi les are available upon request from EMD Support. Contact EMD Support via the web @ www.emdstorage.com/support , or telephone 972- 980 -7098 and hit option 2.[...]

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S ECUR S TOR A STRA ES 139 Append ix B: Ad d ing a Second Cont roll er If your Astra ES subsystem shipped with one controller, you can add a second controller. Th e second controller must have: • The same Firmware version as the currently installed controller • The same amount of SDRAM as the currently installed contr oller To obtain this infor[...]