Illegal Overwrite; Illegal Append Tape Format; Logical Early Warning - Tandberg Data SLR7-140 PROGRAMMER Manual

Tandberg Data
30.8.4

Illegal Overwrite

If the current tape position is not at BOP or EOD and
overwrite is not in effect (see section 2.5 Overwrite
for details), a
immediately with CHECK CONDITION status and the Error
Code is set to W
data will be transferred.
30.8.5.

Illegal Append Tape Format

When appending data on a pre-recorded tape, the only
legal tape format is the format found on the tape. If
the current density is not equal to the tape format, the
Drive will ignore the current density and append with
the same tape format as found on the tape.
the format on the tape is a Read Only format for that
drive (ref. Table
terminated with CHECK CONDITION status. The Error Code
will be set to I
transferred.
30.8.6.

Logical Early Warning

If logical early warning (LEW) tape marker is reached
during the execution of a WRITE command, the Drive will
respond as described below:
The Drive will stop transferring data. The Drive will
then attempt to write all buffered data (and
tapemarks) to the tape. The WRITE command will then
be terminated with CHECK CONDITION. If all data in
the buffer was successfully written to the tape, the
Error Code will be set to E
, LEW
ON WRITE PASSED
NO SENSE. The EOM and VADD bits will be set to one.
The Information Bytes in the sense data list will be
set as follows:
1)
If the FIX bit is set to one, the Information
Bytes will be set to the difference (residue) of
the requested Transfer Length minus the actual
number of transferred blocks.
2)
If the FIX bit is set to zero, the Information
Bytes will be set to the difference (residue) of
the requested Transfer Length minus the actual
number of transferred bytes.
The Drive will force unbuffered mode (regardless the
state of the BM bit in the MODE SELECT/SENSE
Parameter List).
If a read type command (READ, LOCATE, SPACE or
VERIFY), has brought the tape past the LEW marker and
an Append Operation is attempted, then the Drive will
terminate the first WRITE command immediately with
CHECK CONDITION. No data will be transferred. The
Error Code will be set to E
, LEW
ON WRITE PASSED
NO SENSE. The EOM and VADD bits will be set to one.
The Information Bytes in the sense data list will be
set equal to the requested Transfer Length.
30-6 Tandberg SLR Product Line SCSI Functional Specifications
write operation
A E (Write After Read).
RITE PPEND RROR
30-2), the
NCOMPATIBLE MEDIUM INSTALLED
-
ND
and the Sense Key will be set to
-
ND
and the Sense Key will be set to
will be terminated
If, however,
WRITE command will
. No data will be
- /
OF PARTITION MEDIUM DETECTED
- /
OF PARTITION MEDIUM DETECTED
Write
No
be