412 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
/SM590000balanced
Indicates that a pool is being managed by Easy Tier to provide performance-based pool 
balancing.
This is the expected state for a pool with a single tier of storage.
/SM590000inactive
Indicates that Easy Tier is inactive (switched off).
/SM590000measured
Shows that Easy Tier statistics are being collected but no extent movement can be 
performed.
Figure 10-7   Pool properties
To find the status of the Easy Tier function on the pools with the CLI, use the lsmdiskgrp 
command without any parameters. To switch Easy Tier off or back on, use the chmdiskgrp 
command, as shown in Example 10-3. By running lsmdiskgrp with pool name/ID as a 
parameter, you can also determine how much storage of each tier is available within the pool.
Example 10-3   Listing and changing Easy Tier status on pools
IBM_Storwize:ITSOV7K:superuser>lsmdiskgrp
id name  status mdisk_count ... easy_tier easy_tier_status 
0  Pool0 online 1           ... auto      balanced         
2  Pool1 online 3           ... auto      balanced 
IBM_Storwize:ITSOV7K:superuser>chmdiskgrp -easytier measure Pool0
IBM_Storwize:ITSOV7K:superuser>chmdiskgrp -easytier auto Pool0
IBM_Storwize:ITSOV7K:superuser>
Volume settings
By default, each striped-type volume allows Easy Tier to manage its extents. If you need to fix 
the volume extent location (for example, to prevent extent demotes and to keep the volume in 
the higher-performing tier), you can turn off Easy Tier management for a particular volume 
copy.