You can edit the tiering for a single pool.
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In the detail window for a pool, click Update Tiering
Settings to update the following tiering settings:
- Tiering: Select Automatic or Manual monitoring and tier relocation.
- Cycle Time: Select the cycle of performance monitoring and tier relocation. For automatic tiering, select one of the monitoring cycles from drop down. Cycle time can be 0.5, 1, 2, 4, 8 or 24 hours.
- Monitoring Period: When 24 hours is selected in the cycle time list, specify the time from 12:00 AM to 11:59 PM (default value), in which to perform performance monitoring. Set one or more hours between the start and end time. The start time cannot be set later than the end time.
- Monitoring: Specify the monitoring mode. If you perform the tier relocation weighted to the past period monitoring result, select Continuous. If you perform the tier relocation on the specified cycle, select Periodical.
- Relocation Speed: Specify the window 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.
- Buffer Space for Relocation: Specify the storage area required for processing tier relocation. Set this as percentage of the tier size. For each tier enter an integer value from 2 to 40 as the percentage to set for that tier. The default value for each tier is 2%.
- Buffer Space for New Page Assignment: Specify the storage area required for processing new page assignments. Set this as a percentage of the tier size. For each tier enter an integer value from 0 to 50 as the percentage to set for that tier. For tier 1, this value must be between 0 and 50. The default value is 8% for all drive types.
Note: Tiering, Cycle Time, Monitoring Period and Relocation Speed can only be set in environments with an SVP. - Click Submit.