Virtual Volumes can be shared between systems, just like physical tapes. Also, just like physical tapes, if the Tape Management System (TMS) Database is not shared, tape usage is not completely documented, tape security may not be flawless, and application JCL changes may be required to mount the shared tapes.
For example, if a tape is defined only in the TMS Database on system A and written to on system B, the mount will not be documented in the Database. Since the system B Database is not controlling the usage of this tape, an unauthorized user may be able to read or write to this tape. If the TMS is setup to not allow the mounting of tapes that are not documented in the Database, a TMS override may need to be coded in the application JCL to mount the tape on system B.
|
Copyright © 2013 CA.
All rights reserved.
|
|