Changing the cache mode setting of the external volume

Universal Volume Manager User Guide

Version

9.8.6

Audience

anonymous

Part Number

MK-98RD9016-12

You can change the cache mode of the external volume in the Edit External Volumes window.

If the system cannot communicate with external volumes, the Inflow Control setting specifies whether the write operation to cache is limited (Enable) or continued (Disable). Disable is set by default. You can change the setting in the Edit External Volumes window. If you are using a Thin Image pool, all external volumes in the same pool must use the same Cache Mode setting.

You must have the Storage Administrator (Provisioning) role.
Before changing the cache mode of the external volume, review each item listed in the following table.

Item to Review	Description
Cache mode and pool volumes	When a volume is registered to a pool as a pool volume, the cache mode setting should be the same among all the pool volumes in the pool.
Cache mode and remote command devices	When the volume is a remote command device, you cannot change the cache mode from Disable to Enable.

Open the External Storage window.
1. Click Storage Systems, and then expand the Storage Systems tree.
2. Click External Storage.
On the External Storage Systems tab, click the link for an external storage system.
On the External Path Groups tab, click the link for a path group.
On the Mapped Volumes tab, select an external volume, and then click Edit External Volumes.
On the Edit External Volumes window, select the Inflow Control property, and then click Enable or Disable.
Click Finish.
In the confirmation window:
1. Confirm the settings.
2. Accept the default task name or enter a unique name.
  You can enter up to 32 letters, numbers, and symbols, except these:
  \ / : , ; * ? " < > |
3. If you want to view the list of tasks for the storage system after clicking Apply, select Go to tasks window for status.
Click Apply to submit the task.