411508-B21 Battery - HP Smart Array E200 128 BBWC Controller RAID

411508-B21 Battery

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Configuring Arrays on HP Smart Array Controllers Reference Guide


Page 8
...; RAID 60 • Advanced Capacity Expansion • Mirror splitting and recombining in offline mode • Drive Erase • Performance optimization for video on demand To access SAAP features, you must purchase a license key from HP. For a list of select Smart Array controllers. HP Smart Array Advanced Pack About SAAP SAAP is 256 MB or larger • A compatible battery pack...
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Configuring Arrays on HP Smart Array Controllers Reference Guide


Page 19
...The screen displays three panels (Expand Array, Physical Drives, and Expand Existing Array), and the highlight moves to the Controller Options panel. 2. Highlight a physical drive that of the same type as other expansion or migration. HP Online Array Configuration Utility for the expansion to...4. 5. This setting applies only if the controller uses a battery-backed cache. In the Logical Configuration View panel, highlight the controller, and then press the Enter key. During this precaution provides extra data security. 2. To expand an array: 1. Press the Esc key to save...
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Configuring Arrays on HP Smart Array Controllers Reference Guide


Page 20
... and Stripe Size settings on this time, the controller cannot perform any effect on normal server operations, ...array. Back up all data on page 18). Press the Esc key to begin the array expansion and return to the Logical Drive Options panel. 4. Migrating RAID...battery is unlikely to the Logical Configuration View panel. In the Logical Configuration View panel, highlight the logical drive and then press the Enter key. To perform a migration: 1. To minimize any other expansion or migration. 8. Highlight the Accept Changes option, and then press the Enter key. 9. HP Online Array...
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Configuring Arrays on HP Smart Array Controllers Reference Guide


Page 58
... Total Cache Size: 128 MB Battery Pack Count: 1 Battery Status: OK Example 2 => ctrl all show Because this case will have detailed information because the target consists of several devices, the output will be : MSA1000 at dog (sn: P56350D9IP903J, csn: (9J3CJN71XDCH, wwn: 500805F3000BAC11) array A (Parallel SCSI, Unused Space: 20091 MB) logicaldrive 1 (219 MB, RAID 6(ADG), OK...
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Configuring Arrays on HP Smart Array Controllers Reference Guide


Page 66
...battery-backed write cache do not meet the following criteria: • After the shrink, the array must have sufficient capacity to contain all of the configured logical volumes. • You may require a license key to enable this process is an array, and the specified physical drives are being removed to RAID 5 or RAID 6 (ADG). Controllers... that do not support this prompt from the array if the resulting number of drives does not support the fault tolerance (RAID level) of an array by removing two or four drives only. HP Array Configuration Utility 66 While this feature. If you...
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Configuring Arrays on HP Smart Array Controllers Reference Guide


Page 67
...use . HP Array Configuration Utility 67 Like array creation and expansion, the useable space in all the logical drives present in the source array. IMPORTANT: An array expansion, logical drive extension, or logical drive migration takes about 15 minutes per gigabyte. Controllers that do not support a battery-backed write ...cache do not support this option or may require a license key to the size of the same size is a logical drive. For example, in an existing array (array a), six drives (1e:1:4-1e:1:9)...
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Configuring Arrays on HP Smart Array Controllers Reference Guide


Page 68
...raid=5 ss=16 Using Selective Storage Presentation The SSP feature (also known as a safeguard in the migrated array are using different operating systems access the same data. Therefore, the CLI displays a warning prompt as Access Control...RAID level and the stripe size of any given logical drive. • If you do not specify a RAID level for the RAID... (data block size) or RAID level of data that do not support a battery-backed write cache do not ... Syntax: modify [raid=0|1+0|1|5|6|adg|?] [ss=8|16|32|64|128|256|default|?] where is necessary because some RAID-level migrations to be...
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Configuring Arrays on HP Smart Array Controllers Reference Guide


Page 73
...that supports drive write cache. CAUTION: Because physical drive write cache is not battery-backed, you can disable or enable it for all drives on the controller. NOTE: Disabling the array accelerator for a logical drive reserves use this possibility, use a backup power ...a write process. Example command: => ctrl slot=3 ld 1 modify aa=enable HP Array Configuration Utility 73 where is a controller that support physical drive write cache, you want the other logical drives on the controller. Syntax: modify drivewritecache=enable|disable|? [forced] where is a logical drive. This...
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Configuring Arrays on HP Smart Array Controllers Reference Guide


Page 80
.... ReadCache, WriteCache Enter a number between 0 and 100 to specify the percentage of controller, while a "-" indicates that the specified cache ratio is allowed for both options is not allowed. HP Array Configuration Utility 80 Only the battery-backed write cache is to be entered, but are not used . If you to enter a 25-character license...
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RAID 6 with HP Advanced Data Guarding technology: a cost-effective, fault-tolerant solution


Page 4
... applications requiring high performance and fault tolerance; One set of one drive. Provides higher fault tolerance than RAID 0). Potentially risky for large arrays RAID LEVELS RAID 0 Requires a minimum of parity. Low write performance (improved with battery-backed cache. 4 RAID 1 Requires a minimum of parity. Pn and Qn represent two sets of two drives. Protects against the failure...

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We have the following 4 documents available for the HP 411508-B21:
  • Configuring Arrays on HP Smart Array Controllers Reference Guide
  • RAID 6 with HP Advanced Data Guarding technology: a cost-effective, fault-tolerant solution
  • Serial ATA technology, 2nd edition
  • RAID 1: breaking mirrors and rebuilding drives, 4th Edition
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