Starting migration manually or in a schedule

To gain more control over how and when the migration process occurs, you can use the MIGRATE STGPOOL command. Issuing this command starts migration from one storage pool to the next storage pool in the hierarchy, regardless of the value of the HIGHMIG parameter of the storage pool definition.

About this task

You can specify the maximum number of minutes the migration runs before automatically canceling. If you prefer, you can include this command in a schedule to perform migration when it is least intrusive to normal production needs.

For example, to migrate data from a storage pool named ALTPOOL to the next storage pool, and specify that it end as soon as possible after one hour, issue the following command:

migrate stgpool altpool duration=60

Do not use this command if you are going to use automatic migration. To prevent automatic migration from running, set the HIGHMIG parameter of the storage pool definition to 100. For details about the MIGRATE STGPOOL command, refer to the Administrator's Reference.

Restriction: Data cannot be migrated into or out of storage pools that are defined with a CENTERA device class.