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Chapter 24. VSE/Fast Copy and OS/390 DFSMSdss
The following briefly describes VSE/Fast Copy and the comparable OS/390
component, DFSMSdss.
24.1 VSE/Fast Copy (Online and Stand-Alone)
In VSE/ESA Version 1, VSE/Fast Copy runs stand-alone only. The on-line
functions of VSE/Fast Copy have been incorporated into the program ″VSE/Fast
Copy Data Set (VSE/Fast Copy).″ In VSE/ESA Version 2, VSE/Fast Copy (Online
and Stand-Alone), was incorporated into the base code, VSE Central Functions.
For information on VSE/Fast Copy see the
IBM VSE/ESA System Utilities
.
VSE/Fast Copy operates on volume-specific entities (IPL record, volume label,
VTOC) and the set of files stored on the volume, taking the necessary
information from the VTOC. A special Volume function is included for exceptional
situations when the VTOC is no longer valid; this function processes an entire
volume physically rather than being VTOC-driven (see ″Volume Functions″ in
IBM VSE/ESA System Utilities).
With VSE/Fast Copy you can either move data directly from one disk to another
or you may write it on intermediate tape to be restored later. The tape may
either be unlabeled or have standard labels. When you restore the tape to disk
you must also give the label option specified at the time of the tape creation.
Alternate tape drives are supported.
VSE/Fast Copy stand-alone program can restore volume dumps, complete or
partial, that were produced by the VSE/Fast Copy Data Set online program. To
decrease the number of tapes, the VSE/Fast Copy dump and the stand-alone
utilities may be on the same tape as the VSE/Fast Copy tape.
For disk volume identification, VSE/Fast Copy provides the following options:
•
The volume identification of the input and/or output disk volume may be
checked against the value specified in the utility control statement. This
option checks whether you have mounted the correct disk pack. If not, you
may proceed with the mounted disk pack, replace disk packs, or cancel the
job.
•
The volume identification written on an output disk volume may be:
− copied from the original input disk
− changed as specified in the utility control statement.
Copyright IBM Corp. 1998 397