With BypassOfflinePhysicalDevices set to N, CA Vtape will consider both ONLINE and OFFLINE devices for allocations. Use this option only in those environments using CA MIM, IBM GRS or equivalent software packages to automatically vary devices ONLINE as needed, or with tape drives dedicated to each LPAR. CA Vtape will drive an allocation for a tape device as long as the required tape devices for the esoteric defined in the group attributes (or for the device type stored in the ICF catalog for Recalls) are defined to the operating system. The allocation will be driven regardless of the devices' ONLINE/OFFLINE status.
Note: After WAIT/NOHOLD has been replied to the operating system WTOR messages, no further allocation or deallocation processes will be executed by the Backstore Engine until the required device becomes ONLINE.
Tape devices that the Backstore Engine already has allocated, will not be automatically released at task termination if one or more allocations are pending. The operator can manually stop a task that is waiting for a tape device to release the wait if for some reason CA MIM/IBM GRS is not responding properly. For customers implementing this option, it is very important to properly set MAXDRIVES to a value that will guarantee availability of tape devices when needed.
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