Tape block size can be changed in two ways by using commands that change the block size to match the block size used when the data is dumped to tape. A block size can be:
Specified with the T-ATT command. Specified block sizes are tested against a range of values permissible for the system configuration. If the block size specified with the T-ATT command falls outside the valid range for that configuration, the existing block size will be adjusted.
Read from a tape label by the tape-reading commands T-RDLBL and T-READ. In this case it is adjusted because the (1/4-inch) tape drive is unable to read the tape.
The read operation terminates and the following message displays:
[6003] BLOCK SIZE OUT OF RANGE INSUFFICIENT TAPE BUFFER SPACE (C/Q)? |
NOTE |
The sum of the block sizes, for all processes using tape or floppy disk drives, must not exceed 80K. If an attempt is made to exceed this limit, an error message displays: |
Type Q to abort the tape attachment process.
Type C to reattempt tape attachment. The reattempt to attach tape may succeed if another tape unit is detached, making more tape buffer space available.
See Also