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This array is usually the array that was split from the original mirrored array. However, it can be any
other array of the correct size.
Click OK.
6.
When ACU finishes re-mirroring the array, restart the OS.
7.
The controller uses the rebuild process to synchronize the mirrored drives. The drive online LED flashes
during the rebuild process. Depending on the hard drive size and the server load, this process can take
up to 2 hours. You can boot the OS during this time, but the logical drive is not fault-tolerant until the
rebuild is complete.
Creating a split mirror backup
This task splits an array that consists of one or more RAID 1, RAID 1+0, RAID 1 (ADM), or RAID 10 (ADM)
logical drives, and then creates two arrays: a primary array and a backup array.
To create a split mirror backup:
Run the ACU GUI in offline mode. See "Accessing ACU in the offline environment (on page 22)."
1.
At the Configuration screen, select the appropriate controller from the Controller/Device menu.
2.
From the Systems and Devices tree, select the appropriate array.
3.
In the Available Tasks panel, click Create Split Mirror Backup.
4.
A verification and message dialog box appears.
Click OK.
5.
ACU creates the array according to the following rules:
If the original array contained RAID 1 or RAID 1+0 drives, then the primary array will contain RAID
o
0 drives.
If the original array contained RAID 1 (ADM) drives, the primary array will contain RAID 1 drives.
o
If the original array contained RAID 10 (ADM) drives, the primary array will contain RAID 1+0
o
drives.
The backup array always contains RAID 0 logical drives.
o
The primary array continues to be fully accessible to the operating system while the backup array is
o
hidden from the operating system.
When ACU finishes creating the split mirror backup, the new backup array appears in the Systems and
6.
Devices tree:
The array includes the designation "Backup" at the beginning of the array name.
Re-mirroring, rolling back, or re-activating a split mirror backup
Run the ACU GUI in offline mode. See "Accessing ACU in the offline environment (on page 22)."
1.
At the Configuration screen, select the appropriate controller from the Controller/Device menu.
2.
From the Systems and Devices tree, select the primary array.
3.
In the Available Tasks panel, click Manage Split Mirror Backup.
4.
Select one of the following actions:
5.
Re-mirror the array and preserve the existing data. Discard the backup array.
o
This option re-creates the original mirrored array with the current contents of the primary array.
Re-mirror the array and roll back to the contents of the backup array. Discard existing data.
o
HP Array Configuration Utility 46
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