HP XP Racks - Manual (Page 131)

11. In the Subscription Limit text box, enter an integer value from 0 to 65534 as the subscription
rate (%) for the pool.
If no number is entered, the subscription rate is set to unlimited.
12. In the Warning Threshold text box, enter an integer value from 1 to 100 as the rate (%) for
the pool. The default value is 70%.
13. In the Depletion Threshold text box, enter an integer value from 1 to 100 as the rate (%) for
the pool. The default value is 80%.
Enter a value that is greater than the value of the Warning Threshold.
14. Configure Smart Tiers with the following steps.
From the Tier Management option, select Auto or Manual.
1. The selection is usually Auto which allows performance monitoring and tier relocation to
be performed automatically.
If you select Manual, you can use the RAID Manager or Remote Web Console to manually
perform performance monitoring and tier relocation.
2. From the Cycle Time option, select the cycle for performance monitoring and tier relocation.
When you select 24 Hours (default value):
Performance monitoring and tier relocation is performed once a day
In the Monitoring Period field, set the time to start and end performance monitoring. The
default value is 00:00 to 23:59.
Set one or more hours between the starting and ending times. If you specify a starting
time that is later than the ending time, the performance monitoring continues until the
ending time on the next day.
You can view the information gathered by performance monitoring with Remote Web
Console or the RAID Manager.
When you select 0.5 Hours, 1 Hour, 2 Hours, 4 Hours, 8 Hours:
Performance monitoring is performed every hour that is selected, starting at 00:00.
You cannot set a specific time to start performance monitoring.
CAUTION: When Auto is set, all the V-VOL pages may not be completely migrated in one
cycle. In the next cycle, migration starts by updating information for the last processed V-VOL.
At that point, the collection of performance monitoring information is switched to the current
cycle.
15. From the Monitoring Mode option, select Period Mode or Continuous Mode.
If you perform tier relocation in a specified cycle or you do not need to specify the Monitoring
Mode option, select Period Mode. If you perform tier relocation weighted to the monitoring
result of the past period, select Continuous Mode
16. From the Relocation Speed option, select the page relocation speed to use when performin
relocation.
You can set the speed to: 1(Slowest), 2(Slower), 3(Standard), 4(Faster), and 5(Fastest). The
default is 3(Standard). If you want to perform tier relocation at high speed, use the 5(Fastest)
setting. If the speed specified is slower than 3(Standard), the data drive load is low when tier
relocation is performed.
17. In the Buffer Space for New page assignment text box, enter an integer value from 0 to 50
as the percentage (%) for each tier.
A default value depends on the data drive type of the pool-VOL in each tier. The default value
of SSD is 0%. The default value of a type other than SSD is 8%.
Working with pools 131