ISM fulfills the following storage-manager requirements:
ISM allows you to back up logical logs and storage
spaces to different devices and to specify whether to use encryption
or compression for data.
ISM can write the output of parallel backups to a
single device, medium, or volume. Some backup devices can write
data faster than the disks used to hold storage spaces can be read.
ISM can automatically switch from one tape device
to another when the volume in the first device fills.
ISM allows migration of data from one backup medium
to another.
For speed, you can back up logical logs or storage spaces to
disk, but you must move them later to tape or other removable media
or your disk will become full.
ISM allows you to clone copies of backup data for
on-site and off-site storage.
ISM uses automatic expiration of data. Once all data
on a backup media expires, you can reuse the media.