TMF Management Programming Manual (H06.05+)

Commands and Responses
HP NonStop TMF Management Programming Manual—540140-002
5-83
DUMP FILES
ZBlockSize
for dumps to tape, sets the tape data block length, when multiplied by 1024
bytes. It is more efficient to use large data block lengths, but this is limited by
the density in bits per inch (bpi) at which the tape drive writes tapes. The
following values are valid; the default is 8:
ZVerifyTape
for dumps to tape, specifies whether tape verification is performed after a tape
is written. The following values are valid:
ZSPI-VAL-True
Tapes are verified. After each tape volume is written, it is rewound, read
completely, and finally rewound and unloaded. The tape-record
checksums, tape-record sequence numbers, and tape format are verified.
The checks are the same as those made during file recovery; however,
tape verification does not include comparing the tape data to the audit trail
files on disk.
If tape verification fails, an error is returned, the online dump terminates,
and the online dump copy is marked invalid in the catalog. Tape
verification approximately doubles the time needed for a dump.
ZSPI-VAL-False
Tapes are not verified.
If you omit this field, its default value is ZSPI-VAL-False.
ZUnloadMedia
for dumps to tape, specifies whether the tape is unloaded after the dump
process finishes writing to the tape. The following values are valid:
If you omit this field, its default value is ZSPI-VAL-True.
4 Tape data block length of 4096 bytes (800 bpi); recommended.
8 Tape data block length of 8192 bytes (1600 bpi); recommended.
12 Tape data block length of 12288 bytes.
16 Tape data block length of 16384 bytes.
20 Tape data block length of 20480 bytes.
24 Tape data block length of 24576 bytes.
28 Tape data block length of 28672 bytes (6250 bpi); recommended.
ZSPI-VAL-True Tapes are unloaded after use.
ZSPI-VAL-False Tapes are not unloaded after use.