The callout can be a simple shell script or an executable binary. This Rule-based migration of files has a number of applications. For example, a site with multiple types of tertiary media such as optical and tape may use it to force small files to be migrated to optical while large files are migrated to tape, optimizing access for small files and storing large files more economically. In another application, the first copy of each file may be migrated to tapes in one library, while subsequent copies are migrated to tapes in another library intended for disaster recovery.
File access is improved since fewer media mounts are required during retrieval.
Enterprise backup solutions using UCFM as a data repository rely on this feature to keep together the savesets which belong to a particular backup cycle. However, given the rapid pace of development in storage technology, it is impossible for UCFM to have every type of media and drive qualified at any one time. The idea behind this is that a new media or a drive type is more like its predecessors than not. All Rights Reserved.