Easy Tier evaluation mode

When Easy Tier evaluation mode is enabled for a storage pool with a single tier of storage, Easy Tier collects usage statistics for all the volumes in the pool.

The system monitors the storage use at the volume extent level. Easy Tier constantly gathers and analyzes monitoring statistics to derive moving averages for the past 24 hours.

Volumes are not monitored when the easytier attribute of a storage pool is set to off. Volumes are monitored when the easytier attribute of a storage pool is set to measure.

You can control or view data placement settings by using the following command-line interface (CLI) commands:

chmdiskgrp

Modifies the properties of the storage pool. Use this command to turn on evaluation mode on a storage pool with a single tier of storage and to turn off Easy Tier functions on a storage pool with more than one tier of storage.

lsmdiskgrp

Lists storage pool information.

lsvdisk

Lists volume information.

lsvdiskcopy

Lists volume copy information.

mkmdiskgrp

Creates a storage pool.

Other MDisk commands such as addmdisk, chmdisk, and lsmdisk can be used to view or set the tier an MDisk belongs to.