Migrating selectively by using the dsmmigrate command

Use selective migration (the dsmmigrate command) to move specific files from your local file systems to IBM Spectrum Protect™ server storage. For example, if you are not using some files for an extended time, you can migrate them to storage to free extra space on your local file system.

About this task

Note: On large file systems, selective migration can take a while to complete. The process can be quicker if you migrate only premigrated files by using the stubpremigrated option.

The space management client migrates files that are eligible for selective migration according to the settings and options you define. When you migrate a file selectively, the access time for the file does not change. Unlike automatic migration, the number of days since you last accessed a file has no effect on whether your file is eligible for selective migration.

If you plan to migrate many small and medium size files (up to 100 MB) directly to tape, set the hsmgroupedmigrate option to YES. With the HSMGROUPedmigrate option, you can activate the HSM transaction grouping to improve migration performance for bulk operations that move small and medium size files directly to tape.

An eligible file must meet the following management class requirements:

The management class that is assigned to the file enables selective migration.
A current backup version of the file must exist on your migration server if the management class requires one.

For command syntax, options, and examples, see the dsmmigrate command.