VSAM clusters are reorganized as they are restored or recovered (unless they were archived in control interval image copy format). Often, this eliminates multiple extents and CA/CI splits for the clusters involved. Catalog entries are dynamically recreated for each cluster with the attributes, as they existed, when the Archive/Backup was created (unless the cluster was predefined). CA Disk adjusts space allocations for the device type to which the clusters are recovered.
When recovering suballocated (non-unique) VSAM clusters to a "new" volume, you must predefine the VSAM space. After this space is created, CA Disk dynamically defines the VSAM clusters into it. CA Disk automatically defines the self-containing spaces for unique clusters. When restoring suballocated clusters that came from a VSAM catalog into an ICF catalog, the attribute is automatically changed to UNIQUE, regardless of its prior value.
The FILES contains the volume serial of the first data component of a VSAM cluster. During Archive/Backup processing, CA Disk issues a message that shows this volume serial. The volume serial must be correctly specified for a RECOVER run that uses the VOL= parameter. CA Disk can only RECOVER clusters if the first data component volume is correctly specified.
|
Copyright © 2015 CA Technologies.
All rights reserved.
|
|