Dell PowerVault MD3820f - Manual (Page 121)

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.
Keep these important guidelines in mind before you check data consistency:
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