Exception Handling; Phase Sequencing - Tandberg Data SLR7-140 PROGRAMMER Manual

LONG
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Tandberg Data
SLRtape140, SLRtape100, SLRtape75, SLRtape60, SLRtape50,
SLRtape40, SLRtape7, SLR32 and SLRtape24 media:
When this bit is set to one, the current partition is
erased by overwriting from BOP to EOP and updating the
device directory indicating that this active partition
is erased. The Drive is positioned at BOP of the erased
partition.
When the long bit is set to zero the Drive will update
the device directory
partition is erased.
still be on the media. The Drive is positioned at BOP of
the erased partition.
After erase the tape still knows about its partitions.
8.3.

Exception Handling

See sections on
Deferred Errors and Error Conditions For Media Access
Commands.
If the ERASE command is received while the inserted tape
is not positioned
terminate the ERASE command with CHECK CONDITION status.
The Error Code will be set to C
If the IMM and Link bits are both set to one, the Drive
will terminate the ERASE command with CHECK CONDITION
status. The Error Code will be set to I
The Drive returns CHECK CONDITION status if the Long bit
is not set when SLR5 or DC9250 type media. The Error
Code will be set to I
8.4.

Phase Sequencing

In this section the possible SCSI-bus phase sequences
during execution of the command are described. Section
3.2 has more details about the generic phases in the
brackets.
:= <initiator-part> <message-out> <command> <disconnect> <reconnect>
<completed>
The Drive will
transferred. If the IMM-bit is set, the Drive reconnects
before executing the command. If the IMM-bit is not set,
the Drive reconnects when the tape is positioned back at
BOP (or when an error has been detected).
:= <initiator-part> <message-out> <command> <completed>
This sequence will be used when the ERASE command is
executed and
8-2 Tandberg SLR Product Line SCSI Functional Specifications
indicating
However the
Error Conditions
at BOP (or BOM),
OMMAND
CDB.
NVALID FIELD IN
disconnect when
Erase
that this active
physical data will
For All Commands,
the Drive will
S E .
EQUENCE RROR
CDB.
NVALID FIELD IN
the CDB has been