For information on changes in DMF functionality, including bugs fixed in recent releases, refer to the Dependencies and News buttons on the DMF installation interface (dmmaint(8)).

The major new feature of DMF 3.0 is the disk cache manager (DCM), which provides n-tier capability. This new feature lets you configure the disk media-specific process (MSP) to manage data on secondary storage disk, allowing you to further migrate the data to tape as needed. The DCM provides an automated method of using economical disks of modest performance (such as serial ATA disks) as a fast-access DMF cache for files whose activity levels remain high, while also providing migration to tape for those files requiring less frequent access. See:

This guide also incorporates information from the obsolete DMF Release and Installation Guide. For installation instructions, see the /CDROM/platform/DMF.Install file on the CD-ROM for each operating system.