Shared Disk Facility (CMS TMCs Only) › Components › Restrictions

Restrictions

In addition to the following restrictions, see the CP planning and administration guide for additional information about sharing minidisks.

• The pointer file on each CPU is maintained separately and is not updated with database changes performed on other CPUs in the complex until you restart CA VM:Tape or issue a REFRESH command.
• Do not run the VMTBUILD utility against a shared TMC without first shutting down all CA VM:Tape systems that share the TMC.

  Note: For more information, see the VMTBUILD utility.

Important! Do not cache the CA VM:Tape 1B0 or 1D0 minidisks because they are shared between multiple systems. To avoid data integrity problems, use the MINIOPT directory control statement to exclude these disks from cache.