•
Degraded Reconstruction Priority
— The degraded reconstruction priority level determines the priority of the data reconstruction
operation when a single physical disk fails in a disk pool.
•
Critical Reconstruction Priority
— The critical reconstruction priority level determines the priority of the data reconstruction
operation when at least two physical disks fail in a disk pool.
•
Background Operation Priority
— The background operation priority level determines the priority of the disk pool background
operations, such as Virtual Disk Expansion (VDE) and Instant Availability Format (IAF).
To configure alert notifications for a disk pool:
1
In the AMW, select the
Storage & Copy Services
tab.
2
Select the disk pool.
3
From the menu bar, select
Storage
>
Disk Pool
>
Change
>
Settings.
The
Change Disk Pool Settings
dialog is displayed.
4
In the
Modification Priorities
area, move the slider bars to select a priority level.
You can choose a priority level for:
•
Degraded reconstruction
•
Critical reconstruction
•
Background operation
You can select one of the following priority levels:
•
lowest
•
low
•
medium
•
high
•
highest
The higher the priority level, the larger is the impact on host I/O and system performance.
Changing the RAID controller module ownership of a
disk pool
You can change the RAID controller module ownership of a disk pool to specify which RAID controller module must own all of the virtual
disks in the disk pool.
Changing the RAID controller module ownership at the disk pool level causes each virtual disk in that disk pool to transfer to the other RAID
controller module and use a new I/O path. If you do not want to set each virtual disk to the new path, change the RAID controller module
ownership at the virtual disk level instead of the disk pool level.
CAUTION:
Possible loss of data access – If you change the RAID controller module ownership while an application is accessing
the virtual disks in the disk pool, it may result in I/O errors. Make sure that the application is not accessing the virtual disks, and
there is a multi-path driver installed on the hosts before you perform this procedure.
To RAID controller module ownership of a disk pool:
1
In AMW, select the
Storage & Copy Services
tab.
2
Select the disk pool.
3
From the menu bar, select
Storage
>
Disk Pool
>
Change
>
Ownership/Preferred Path.
4
Select the RAID controller module.
5
Click
Yes
.
Checking data consistency
Use the
Check Consistency
option to check the consistency on a selected disk pool or disk group.
Use this option only when instructed by the Recovery Guru.
CAUTION:
Use this option only under the guidance of your Technical Support representative.
Disk pools and disk pool virtual disks
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