ETERNUS SF Express V16.1 / Storage Cruiser V16.1 / AdvancedCopy Manager V16.1 Web Console Guide

6.15.12 Change Number of Layers of Tier Pool

The procedure to change number of layers of the registered Tier pool is as follows:

1. On the global navigation tab, click Storage.
   The registered ETERNUS Disk storage systems are displayed on the Main pane.

2. On the Main pane, click the target ETERNUS Disk storage system.

3. On the Category pane, click Automated Storage Tiering.
   The items of the Category pane change into the items concerning Automated Storage Tiering.

4. On the Category pane, click Tier Pool.
   The registered Tier pools are displayed on the Main pane.

5. On the Main pane, check the target Tier pool checkbox.
   Only one Tier pool can be selected.

6. On the Action pane, click Modify Layer under Tier Pool.
   The information input screen is displayed.

7. Refer to the following table to enter the necessary information, and then click Next.

   Item Name	Explanation
   Policy Name	Specify the Tiering policy to associate with the Tier pool. Make a selection from the Tiering policies that have been defined and are displayed in the pull-down list. The Tiering policies that cannot be applied to the Tier pool configuration after the change are not displayed.
   Assigned CM	Only when a CM in charge has been specified at the time of the Tier pool creation, the CM in charge can be added. As needed, specify the CM which takes charge of the Tier pool being created. In the default setting, a checkbox is not checked (a CM in charge is not specified). To specify a CM which takes charge of the Tier pool, check the checkbox. All of the CMs present on the storage device will be displayed, make a selection from these.
   Number of Layers	Specify the number of layers of the Tier pool. Only an increase is possible.
   Disk Selection	Specify the method for the selection of disks that configure the sub-pool. The default setting is "Auto" (automatic selection). When "Auto" is selected, in the screen to configure the Low sub-pool and Middle sub-pool, it is necessary to specify a minimum required capacity for each of the sub-pools. When "Manual" is selected, in the screen to configure the Low sub-pool and Middle sub-pool, it is necessary to specify the disks that will configure each of the sub-pools.

8. The screen to configure the sub-pool is displayed.
   Refer to the table of step 7 of "6.15.7 Create Tier Pool" to enter the necessary information for the added sub-pool, and then click Next.

9. The information confirmation screen is displayed. Confirm the information, and then click Modify.