HP XP7 Storage - Manual (Page 71)

In that case, the third collection of the monitoring information is started after the first tier relocation
is stopped or tier relocation has completed.
The collection of the monitoring information is not started under these conditions as well:
•
When the second tier relocation is performed, the fourth collection of monitoring information
cannot be started.
•
When the third tier relocation is performed, the fifth collection of monitoring information cannot
be started.
If such conditions exist, two cycles of monitoring information cannot be collected continuously while
tier relocation is performed.
Figure 9 Third collection of monitoring information while tier relocation is performed
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.
Smart Tiers Z 71