HP XP7 User Manual page 72

In Auto execution mode, monitoring and relocation are continuous and automatically scheduled.
In Manual execution mode, the following operations are initiated manually.
Start monitoring
Stop monitoring and recalculate tier range values
Start relocation
Stop relocation
In both execution modes, relocation of data is automatically determined based on monitoring
results. The settings for these execution modes can be changed nondisruptively while the pool is
in use.
Auto execution mode
Auto execution mode performs monitoring and tier relocation based on information collected by
monitoring at a specified constant frequency: from 0.5, 1, 2, 4, or 8 hours. All Auto 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.
As shown in the following table, the 24-hour monitoring cycle allows you to 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
window" (page
Monitoring cycle (hours)
0.5
1
2
4
8
24 (monitoring time period can
be specified)
If the setting of the monitoring cycle is changed, performance monitoring begins at the new start
time. The collection of monitoring information and tier relocation operations already in progress
are not interrupted when the setting is changed.
Example 1: If the monitoring cycle is changed from 1 hour to 4 hours at 01:30 AM, the collection
of monitoring information and tier relocation in progress at 01:30 AM continues. At 02:00 AM
and 03:00 AM, however, monitoring information is not collected and tier relocation is not
performed. From 04:00 AM, the collection of monitoring information and tier relocation operations
are started again. These operations are then performed at 4-hour intervals.
Example 2: If the monitoring cycle is changed from 4 hours to 1 hour at 01:30 AM, the collection
of monitoring information and tier relocation in progress at 01:30 AM continues. From 04:00 AM,
the collection of monitoring information and tier relocation operations are started again. These
operations are then performed at 1-hour intervals.
72 Configuring thin provisioning
285).
Start Times
0.5 hours from 00:00 AM. For example
00:00, 00:30, and 01:00
1 hour from 00:00 AM. For example
00:00, 01:00, and 02:00
2 hours from 00:00 AM. For example
00:00, 02:00, and 04:00
4 hours from 00:00 AM. For example
00:00, 04:00, and 08:00
8 hours from 00:00 AM. For example
00:00, 08:00, and 16:00
Specified time
Finish Times
0.5 hours after the start time
1 hour after the start time
2 hours after the start time
4 hours after the start time
8 hours after the start time
Specified time
"Edit Pools