HP 295570-B21 RAID 1: breaking mirrors and rebuilding drives, 4th Edition - Page 3

Splitting a mirrored array using the Array Configuration Utility - firmware

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Table 1. HP Smart Array controllers supporting ACU and manual methods of breaking RAID 1(+0) mirrors Supported Controllers Smart Array P212, P410, P410i, P411, P712 (ACU method requires Advanced Pack License) Smart Array E500, P400, P400i, P700m, P800 Smart Array E200, P600 ACU Method x Manual Method x x x x x Smart Array 6i, 641, 642, 6402, 6404 x x (ACU method requires firmware version 2.58 or higher) Integrated Smart Array x SMART-2/P, SMART-2/E, SMART-2SL, x SMART-2DH Smart Array 221, 3100ES, 3200, 431, x 4200, 4250ES, 5i, 5i Plus, 532, 5312, 5302, 5304 Splitting a mirrored array using the Array Configuration Utility This functionality, available in some controller models and ACU versions, splits an array that consists of one or more RAID 1(+0) logical drives into two identical new arrays consisting of RAID 0 logical drives. This functionality is useful when replicating a configuration or building a backup before performing a risky operation. Note that this is a bit different from the manual method, in which the volumes remain in their original RAID 1 or RAID 1+0 configuration after being split. Also note that using the ACU does not require splitting other arrays attached to the controller at the same time. The Array Configuration Utility will show the Split Mirror task as an available option only under all of the following conditions: • Both versions of ACU being used and the selected controller support the action. • The server is offline. • Any applicable Smart Array Advanced Pack keys have been successfully installed. IMPORTANT You cannot split an array if it contains logical drives in RAID 0, RAID 5, RAID 6, RAID 50, or RAID 60 configurations. NOTE You can split or re-mirror an array only when the server is offline.

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Table 1.
HP Smart Array controllers supporting ACU and manual methods of breaking RAID 1(+0) mirrors
Supported Controllers
ACU Method
Manual Method
Smart Array P212, P410, P410i, P411,
P712
(ACU method requires Advanced Pack
License)
x
x
Smart Array E500, P400, P400i,
P700m, P800
x
x
Smart Array E200, P600
x
x
Smart Array 6i, 641, 642, 6402, 6404
(ACU method requires firmware version
2.58 or higher)
x
x
Integrated Smart Array
x
SMART-2/P, SMART-2/E, SMART-2SL,
SMART-2DH
x
Smart Array 221, 3100ES, 3200, 431,
4200, 4250ES, 5i, 5i Plus, 532, 5312,
5302, 5304
x
Splitting a mirrored array using the Array Configuration
Utility
This functionality, available in some controller models and ACU versions, splits an array that consists
of one or more RAID 1(+0) logical drives into two identical new arrays consisting of RAID 0 logical
drives. This functionality is useful when replicating a configuration or building a backup before
performing a risky operation. Note that this is a bit different from the manual method, in which the
volumes remain in their original RAID 1 or RAID 1+0 configuration after being split. Also note that
using the ACU does not require splitting other arrays attached to the controller at the same time. The
Array Configuration Utility will show the Split Mirror task as an available option only under all of the
following conditions:
•
Both versions of ACU being used and the selected controller support the action.
•
The server is offline.
•
Any applicable Smart Array Advanced Pack keys have been successfully installed.
IMPORTANT
You cannot split an array if it contains logical drives in RAID 0,
RAID 5, RAID 6, RAID 50, or RAID 60 configurations.
NOTE
You can split or re-mirror an array only when the server is
offline.