8464ch10_OperSW.fm Draft Document for Review February 7, 2020 3:15 pm Warning VTS operation degraded messages When a VTS is operating in a degraded state, the following message is generated: CBR3786E VTS operation degraded in library  library-name When the degradation is resolved, the following message is generated: CBR3768I VTS operations in library  library-name  no longer degraded For a TS7700D or TS7700T, the following warning and critical cache free space messages  are surfaced: When the cache situation is resolved, the following messages are surfaced: CBR3792E Library  library-name  has entered the limited cache free space warning state. CBR3794E Library  library-name  has entered the out of cache resources critical state. CBR3793I Library  library-name  has left the limited cache free space warning state. CBR3795I Library  library-name  has left the out of cache resources critical state. Warning cache use capacity (TS7700D or TS7700T) Out of physical volumes When a distributed library that is associated with a cluster runs out of scratch stacked  physical volumes, operations of the TS7700T are affected. As part of normal processing, data  is copied from cache to physical volumes in a primary pool that is managed by the TS7700. A  copy might also be made to a physical volume in a secondary pool if the dual copy function is  specified by using Management Class (MC).  Empty physical volumes are needed in a pool or, if a pool is enabled for borrowing, in the  common scratch pool for operations to continue. If a pool runs out of empty physical volumes  and no volumes can be borrowed (or borrowing is not enabled), operations that might use that  pool on the distributed library must be suspended.  If one or more pools run out of empty physical volumes, the distributed library enters the Out  of Physical Scratch state. The Out of Physical Scratch state is reported to all hosts that are  attached to the cluster that is associated with the distributed library and if included in a grid  configuration, to the other clusters in the grid.  The following MVS console message is generated to inform you of this condition: CBR3789E VTS library  library-name  is out of empty stacked volumes. Library-name  is the name of the distributed library in the state. The  CBR3789E  message  remains on the MVS console until empty physical volumes are added to the library, or the pool  that is out was enabled to borrow from the common scratch pool and empty physical volumes  are available to borrow. Intervention-required conditions are also generated for the  out-of-empty-stacked-volume state, and for the pool that is out of empty physical volumes.  If the option to send intervention conditions to attached hosts is set on the TS7700 that is  associated with the distributed library, the following console messages are also generated to  provide specific information about the pool that is out of empty physical volumes: CBR3750I Message from library library-name: OP0138 The Common Scratch Pool (Pool  00) is out of empty media volumes. Severity impact: CRITICAL. CBR3750I Message from library library-name: OP0139 Storage pool xx is out of  scratch volumes. Severity impact: CRITICAL. Chapter 10. z Host Console operations  609