HP XP P9500 Storage - Manual (Page 82)

execution mode cycle frequencies have a starting point at midnight (00:00). For example, if
you select a 1 hour monitoring period, the starting times would be 00:00, 01:00, 02:00,
03:00, and so on.
Using a 24-hour monitoring cycle, you can specify the times of day to start and stop
performance monitoring. The 24-hour monitoring cycle does not have to start at midnight. Tier
relocation begins at the end of each cycle. For more information, see
(page 298) .
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Manual execution mode
You can start and stop performance monitoring and tier relocation at any time. You should
keep the duration of performance monitoring to less than 7 days (168 hours). If performance
monitoring exceeds 7 days, then monitoring stops automatically.
Manual execution mode starts and ends monitoring and relocation at the time the command
is issued from Remote Web Console or RAID Manager. You can use scripts, which provide
flexibility to control monitoring and relocation tasks based on a schedule for each day of the
week.
When Smart Tiers is configured for automatic operations, the monitoring feature will be enabled
and the time period for monitoring is set for all or part of a 24-hour period. At the end of each
monitoring period, the relocation task is performed automatically.
Tier relocation flow
The following shows the flow of allocating new pages and migrating them to the appropriate tier.
The combination of determining the appropriate storage tier and migrating the pages to the
appropriate tier is referred to as tier relocation.
Explanation of the relocation flow:
82 Configuring thin provisioning