Dell POWERVAULT MD3600I - Manual (Page 66)

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
Changing The Virtual Disk Cache Settings .
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 Thin Virtual Disks .
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 click and select the appropriate virtual disks. To select
adjacent virtual disks, press 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.
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