Changing The I/O Type - Dell PowerVault MD3220 Owner's Manual

To change the segment size of a virtual disk:
1 In the AMW, select the Logical tab and select a virtual disk.
2 Select Virtual Disk Change Segment Size.
3 Select the required segment size.
A message prompts you to confirm the selected segment size.
4 Click Yes.
The segment size modification operation begins. The virtual disk icon in the
Logical pane shows an Operation in Progress status while the operation is
taking place.
NOTE:
To view the progress or change the priority of the modification operation,
select a virtual disk in the disk group, and select Virtual Disk Change
Modification Priority.

Changing the I/O Type

You can specify the virtual disk I/O characteristics for the virtual disks that
you are defining as part of the storage array configuration. The expected I/O
characteristics of the virtual disk is used by the system to indicate an
applicable default virtual disk segment size and dynamic cache read prefetch
setting.
NOTE:
The dynamic cache read prefetch setting can be changed later by selecting
Virtual Disk Change Cache Settings. You can change the segment size later by
selecting Virtual Disk Change Segment Size.
The I/O characteristic types shown below are only presented during the create
virtual disk process.
When you choose one of the virtual disk I/O characteristics, the
corresponding dynamic cache prefetch setting and segment size that are
typically well suited for expected I/O patterns are populated in the Dynamic
cache read prefetch field and the Segment size field.
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Configuration: Disk Groups and Virtual Disks