Set thresholds for tiering volumes by I/O rate or I/O density. To gain
better optimization results, you can also customize the analysis of the workload activity of the
pools.
Procedure
- Select the resources that you want to analyze.
The
source storage pools that are related to the resources that you selected
are analyzed to determine whether they meet the workload requirements
of the volumes. If the workload requirements of the volume in its
current tier are not met, the volume is a candidate for relocation.
- Select the target storage pools.
- Include or exclude volumes in mirrored volume relationships
from the analysis.
Mirrored volumes: If you want to optimize mirrored volumes, select one
or more target pools that do not contain either the primary volume
or the secondary volume. Primary volumes and secondary volumes cannot
be placed in the same destination pool.
-
Select the period that you want to use to analyze the performance data.
You can choose the number of days, days of the week, and hours of the day for the analysis to
occur.
- Specify whether volumes that are in the same source storage
pool and that are assigned to the same server or hypervisor must be
placed in the same destination storage pool.
Recommendations
are only generated to move one or more of the related volumes when
all of the related volumes can be placed in the same destination storage
pool.
Multiple host connections to the same hypervisor or server: If the volumes in the source pool that are assigned to
the same hypervisor or server are assigned to different host connections,
the collocation of the volumes is affected. In such cases, if volumes
require optimization, the volumes that are assigned to the same host
connection are kept together. To view information about the host connection
for the volume, right-click the volume, select View Details,
and then click the Host Connections tab.
- Specify the type of threshold and the threshold values
for moving volumes to higher and lower tiers.
- Click Analyze.
Results
When you complete entering the information to analyze the
tiering of the volumes, recommendations for tiering are shown on the Tiering Analysis page.
You can create a schedule to run the analysis that is based on the
analysis criteria that you entered.