T-STACKER

Enables multi-reel FILE-SAVE/RESTORE operations to be carried out on a multiple cassette tape stacker/autoloader unit without needing to type C  to continue at the end of each tape.

Syntax

T-STACKER unit slots

Syntax Elements

unit Specifies the tape unit number.

slots Specifies the number of slots in the tape stacker that are occupied. A slot value of 0 (zero) returns the tape unit to normal operation.

Comments

T-STACKER enables automatic sequential access to some or all tapes in a multiple cassette unit until the end of the last tape, as defined by T-STACKER, is reached.

Executing T-STACKER with the slots parameter greater than zero declares that the tape unit is to be operated in auto-sequential mode.

T-STACKER is for use with Sun Desktop multiple tape drives. However, it may be suitable for use with other multi-cassette stacker/autoloader units supported by NEC Software Solutions in the future.

Example

T-STACKER 3 4

Specifies that tape device number 3 is a Stacker or Autoloader drive with four slots loaded with tapes. Four tapes can then be accessed and unloaded.

After each tape is filled by the FILE-SAVE, the message

MOUNT REEL# N ON DRIVE 2
TYPE 'C' TO CONTINUE

is displayed. However the software continues automatically until the fourth and last tape is accessed. After the last tape is unloaded, further access to the unit is denied until T-STACKER is executed again. Note that the save operation will fail if the data doesn't fit on the specified number of tapes, in this case 4.