Changing the cache mode setting of the external volume
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.
Before you begin
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 Residency Manager and cache mode (VSP G1000, G1500) |
When the bind mode is set, you cannot change the cache mode from Enable to Disable. To change the cache mode to Disable, cancel the setting for Cache Residency Manager or change the cache residency mode to the priority mode. |
|
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. |
Procedure
Open the External Storage window.
In Command Suite:
On the Resources tab, click Storage Systems, and then expand All Storage Systems.
Expand the target storage systems, right-click External Storage, and then select System GUI.
In Device Manager - Storage Navigator:
Click Storage Systems, and then expand the Storage Systems tree.
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 to display the Confirm window.
Confirm the settings and enter the task name in the Task Name box.
In the Confirm window, click Apply.
Related references