Dell PowerVault ME4 Series Storage System Administrator’s Guide

Modify a volume

Perform the following steps to modify a volume:

1. In the Volumes topic, select a volume in the volumes table.
2. Select Action > Modify Volume.
   The Modify Volume panel opens.
3. Optional: In the New Name field, type a new name for the volume. A volume name is case-sensitive and can have a maximum of 32 bytes. It cannot already exist in the system or include the following: " , < \
4. Optional: In the Expand By field, type the size by which to expand the volume. If overcommitting the physical capacity of the system is not allowed, the value cannot exceed the amount of free space in the storage pool. You can use any of the following units: MiB, GiB, TiB, MB, GB, TB.
   Volume sizes are aligned to 4.2 MB (4 MiB) boundaries. When a volume is created or expanded, if the resulting size is less than 4.2 MB it will be increased to 4.2 MB. A value greater than 4.2 MB will be decreased to the nearest 4.2 MB boundary.
5. Optional: In the Write Policy list, select Write-back or Write-through.
6. Optional: In the Write Optimization list, select Standard or No-mirror.
7. Optional: In the Read Ahead Size list, select Adaptive, Disabled, Stripe, or a specific size (512 KB; 1, 2, 4, 8, 16, or 32 MB).
8. Optional: In the Tier Affinity field, select No Affinity, Archive, or Performance. The default is No Affinity.
9. Click OK.
   If a change to the volume size overcommits the pool capacity, the system prompts you to configure event notification to be warned before the pool runs out of physical storage.
10. If the virtual volume exceeds the capacity:
    1. Click OK to continue. Otherwise, click Cancel. If you clicked OK, the volumes table is updated.
    2. To close the confirmation panel, click OK.