HP Q153090901 Technical Reference Manual page 82

Ultrium tape drives generation 3 drives volume 3-the scsi interface
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WTRE
Rewind on
Reset
Unchangeable parameters:
PS
CAF
Active Format
Active Partition
Write Buffer Full
Ratio
Read Buffer
Empty Ratio
DBR
BIS
Rsmk
AVC
SOCF
RBO
REW
Gap Size
EOC Defined
82
Commands
WORM Tamper Read Enable. Controls the behavior of the drive when reading WORM
media if it appears that the integrity of the tape has been compromised by tampering.
WTRE has no effect on reads of normal (non-WORM) media.
0
Default:
If no tampering has been detected, data is returned as normal.
If tampering has been detected, no data is returned in response to a READ
command or after the position of tamper. CHECK CONDITION is returned with
sense key of Medium Error and additional sense of 300Dh (WORM medium—
integrity check failed). TapeAlert flag 3Bh (medium error—integrity check failed)
is set. The Error Code field in the Error Usage page will be filled with the ASC/Q
of 300Dh.
1
Data is returned regardless of whether tampering has been detected on the
WORM cartridge. The bit should only be set as a last resort where data recovery
overrides concerns about WORM integrity.
00b A Logical Unit Reset does not alter the logical position.
01b A Logical Unit Reset will cause the tape to be rewound to BOT.
10b A Logical Unit Reset does not alter the logical position.
11b Reserved
0
0 The Change Active Format flag should be zero since changing formats is not
supported.
0 Changing formats is not supported.
0 Multiple partitions are not supported.
0 Buffer management is done by the drive.
0 Buffer management is done by the drive.
0 The Data Buffer Recovery flag should be clear since this feature is not supported.
1 The Block Identifiers Supported flag should be set since block identifiers are
supported.
0 The Report Set Marks flag should be clear since this feature is not supported.
0 The Automatic Velocity Control flag should be clear since velocity control is
managed by the drive.
0 The Stop On Consecutive Filemarks flag should be clear since this feature is not
supported.
0 The Recover Buffer Order flag should be clear since this feature is not supported.
0 The Report Early Warning on read flag should be clear since this feature is not
supported.
0 There is no concept of inter-block gaps in the format.
0

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