Note
If the software product MAREN is being used, the volumes are administered by MAREN and in particular assigned to the archive directories (see the “MAREN” manual [10], as well as the section "Restrictions due to new functions"). The volume management of HSMS is thus integrated in the computer-center-wide volume management. In this case you should ignore the volume management by HSMS described in this chapter.
A number of cartridges can be assigned to an archive, and these form the archive's volume pool.
/MODIFY-ARCHIVE VOLUMES=*ADD adds volumes of the class “TAPE” to an archive by specifying their VSNs and device types. They are then entered in the free volume pool. Unless otherwise specified, the save volumes for write requests referring to the archive are fetched from this free volume pool.
//MODIFY-ARCHIVE VOLUMES=*REMOVE removes volumes from the free volume pool.
The volumes added to the archive are listed with the remark POOL in the OWNER column of the output displayed in response to //SHOW-ARCHIVE SELECT=*VOLUMES.
Volumes that were not taken from the volume pool to execute an archive write request but were explicitly requested by the user via their VSN or assigned by the operator are only temporarily added to the archive directory. These volumes are listed with the remark OPERATOR in the OWNER column (see section "Allocating volumes").
The volumes in a volume pool may have any of the following states:
State | Meaning |
AVAILABLE | Either the volume has not been used since being added to the archive or the save file has been deleted and the retention period has expired (free volume pool). |
IN-USE | The volume is occupied by a save file whose retention period has not yet expired. |
OBSOLETE | The VSN's retention period has expired. However, the save file has not been deleted yet. |
FORCED-DELETE | The volume has been released although the retention period has not yet expired. |
UNUSABLE | The volume cannot be used due to an error. |
If a volume whose state is FORCED-DELETE is to be written to before the retention period has expired, it must be removed from the pool, reinitialized and returned to the pool.
A magnetic tape cartridge in the state UNUSABLE (or the VSNs of such tapes) cannot be used again until it has been removed from the pool and then added to it again.