Changing The Virtual Disk Modification Priority - Dell PowerVault MD Series Administrator's Manual

6. In the Data Service (DS) Attributes area, you can select:
– Enable data assurance (DA) protection on the new virtual disk
– Use SSD cache
7. In the Virtual disk I/O characteristics type list, select the appropriate Virtual Disk I/O characteristics type. You can
select:
– File system (typical)
– Database
– Multimedia
– Custom
NOTE: If you select Custom, you must select an appropriate segment size.
8. Select Enable dynamic cache read prefetch.
For more information on virtual disk cache settings, see
NOTE: Enable dynamic cache read prefetch must be disabled if the virtual disk is used for database
applications or applications with a large percentage of random reads.
9. From the Segment size list, select an appropriate segment size.
10. Click Finish.
The virtual disks are created.
NOTE: A message prompts you to confirm if you want to create another virtual disk. Click Yes to proceed
further, else click No.
NOTE: Thin virtual disks are supported on disk pools. For more information, see

Changing The Virtual Disk Modification Priority

You can specify the modification priority setting for a single virtual disk or multiple virtual disks on a storage array.
Guidelines to change the modification priority of a virtual disk:
• If more than one virtual disk is selected, the modification priority defaults to the lowest priority. The current
priority is shown only if a single virtual disk is selected.
• Changing the modification priority by using this option modifies the priority for the selected virtual disks.
To change the virtual disk modification priority:
1. In the AMW, select the Storage & Copy Services tab.
2. Select a virtual disk.
3. In the menu bar, select Storage → Virtual Disk → Change → Modification Priority.
The Change Modification Priority window is displayed.
4. Select one or more virtual disks. Move the Select modification priority slider bar to the desired priority.
NOTE: To select nonadjacent virtual disks, press <Ctrl> click and select the appropriate virtual disks. To select
adjacent virtual disks, press <Shift> click the appropriate virtual disks. To select all of the available virtual
disks, click Select All.
5. Click OK.
A message prompts you to confirm the change in the virtual disk modification priority.
6. Click Yes.
7. Click OK.
66
Changing The Virtual Disk Cache Settings.
Thin Virtual Disks.