Changing a Dynamic Provisioning pool to a Dynamic Tiering or active flash pool

Use this procedure to change a Dynamic Provisioning pool to a pool for Dynamic Tiering or active flash.

Before you begin

The Storage Administrator (Provisioning) role is required to perform this task.

To change a pool of Dynamic Tiering or active flash to a pool with data direct mapping enabled, use the following procedure:

In the operation target pool, open the Edit Pools window, and then select Enable from the Multi-Tier Pool field.

Apply the setting to the storage system.

In the operation target pool, open the Edit Pools window, and then select Enable from the Data Direct Mapping field.

Apply the setting to the storage system.

Procedure

Open the Pools window.

In Command Suite:

On the Resources tab, click Storage Systems, and then expand All Storage Systems and the target storage system.

Right click DP Pools then select System GUI.

In Device Manager - Storage Navigator:

Click Storage Systems, and then expand the Storage Systems tree.

Click Pools.

From the Pools table, click the row of the pool you want to edit.

Perform one of the following to display the Edit Pools window.

- Click More Actions and select Edit Pools.

- Click Actions > Pool > Edit Pools to open the window.

Check Multi-Tier Pool.

Select Enable from the Multi-Tier Pool field.

If active flash is used, select the Active Flash check box. If there is no pool volume whose drive type is SSD, the check box cannot be selected.

Select the Tier Management check box.

In the Tier Management field, select Auto or Manual.

Normally Auto should be set.

When you select Auto, monitoring and tier relocation can be automatically executed.

When you select Manual, monitoring and tier relocation can be executed with the Command Control Interface commands or the Pools window.

When you change the setting of Auto to Manual while monitoring and tier relocation is executing, it is cancelled.

From the Cycle Time list, select the cycle of performance monitoring and tier relocation.

When you change the Cycle Time while performance monitoring and tier relocation are being executed, the setting becomes effective for the next cycle after the current cycle is complete.

When you select 24 Hours (default):

Monitoring and tier relocation is performed once a day. In the Monitoring Period field, specify the time of starting and ending of monitoring in 00:00 to 23:59 (default value).

If you specify the starting time later than the ending time, the monitoring continues until the time you specified as the ending time on the next day. Any time that is not in the specified range of the monitor period is not monitored.

You can view the information gathered by monitoring with Device Manager - Storage Navigator and Command Control Interface.

When you change the time range of performance monitoring, the setting becomes effective from the next cycle after the cycle that is executing is complete.

When you select any of 0.5 Hours, 1 Hour, 2 Hours, 4 Hours or 8 Hours:

Performance monitoring is performed every duration you selected starting at 00:00.

You cannot specify the monitoring period.

Select the Monitoring Mode check box.

From the Monitoring Mode options, select Period Mode or Continuous Mode.

If you want to perform tier relocation using the monitor results from the prior cycle, select Period Mode. If you want to perform tier relocation weighted to the past period monitoring result, select Continuous Mode.

Select the speed to use for page relocation in Relocation speed. You can set the speed to: 1(Slowest), 2(Slower), 3(Standard), 4(Faster), or 5(Fastest). The default is 3(Standard). If the speed specified is slower than 3(Standard), the data drive load is low when tier relocation is performed.

Select the Buffer Space for New page assignment check box.

In the Buffer Space for New page assignment text box, enter an integer value from 0 to 50 as the percentage (%) to set for each tier.

Select the Buffer Space for Tier relocation check box.

In the Buffer Space for Tier relocation text box, enter an integer value from 2 to 40 as the percentage (%) to set for each tier.

Click Finish.

The Confirm window appears.

In the Task Name text box, enter the task name.

You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. The value "date-window name" is entered by default.

In the Confirm window, click Apply to register the setting in the task.

If the Go to tasks window for status check box is selected, the Tasks window appears.