Load/Unload; Command Description - Tandberg Data SLR7-140 PROGRAMMER Manual

10.

Load/Unload

10.1. Command Description

When a tape cartridge is manually inserted, the Drive
will automatically position the tape at BOM, which means
that the tape is physically loaded. To prepare the Drive
for media access commands, the tape has to be logically
loaded. This is achieved by issuing a LOAD command. This
command may also
function.
It is possible to configure the Drive for Auto Load,
Auto Retension and Conditional Retension operations (see
the MODE SELECT section for details).
The LOAD command (Load bit set to one) will write any
buffered data to the tape. The tape is rewound to BOT.
If the medium type is SLRtape140 to SLRtape7 or SLR32,
the media header is updated. After successful execution
of a LOAD command
beginning of partition
commands are permissible.
The UNLOAD command (Load bit set to zero) will write any
buffered data to the tape. The tape is rewound to BOT.
If the medium type is SLRtape140 to SLRtape7 or SLR32,
the media header is updated. The tape is then positioned
at BOM or EOT
removal is not
REMOVAL command)
removal is prevented, the cartridge is not ejected and
the command is terminated with CHECK CONDITION status.
After this error
unloaded and no media access commands are permissible. A
subsequent LOAD command will logically load the tape
again and all media access commands are permissible.
If immediate operation is requested (IMM bit set to
one), the Drive will be logically loaded (Load bit set
to one) or unloaded (Load bit set to zero) even if the
tape has not reached its final destination.
When the Drive is in buffered mode, it will discard any
buffered data when a LOAD/UNLOAD command is validated if
the previous
CONDITION.
It will not be
LOAD/UNLOAD commands are received in a sequence (as long
as the first LOAD/UNLOAD
error).
The Drive will
command if disconnection is allowed.
10-1 Tandberg SLR Product Line SCSI Functional Specifications
be used to
the tape
zero and
determined by
prevented (see
the cartridge
condition the
command was terminated
considered an
command
disconnect during
request a retension
is positioned
all media
the EOT-bit. If
PREVENT/ALLOW
is ejected. If
tape is logically
with
error when multiple
executed with
execution of
at the
access
media
MEDIA
media
CHECK
no
this