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Tandberg Data
When the Drive receives a new READ command the Drive
will execute a Space Over Bad Blocks operation to move
the logical tape position until it can safely detect the
beginning of a logical block. This READ command will not
transfer any data and it will be terminated with another
CHECK CONDITION status (indicating R
Yet another READ command will start transferring data
from this logical block.
If there are more non-recoverable errors in the next
logical block also, good data is again transferred up to
the first error, CHECK CONDITION is reported and the
whole process described above is repeated.
17.3.8.
Illegal Termination
When the Drive can see no more data on a tape, it always
checks that the last block is followed by an end-of-data
marker before reporting End Of Data (Blank Check). If
the end-of-data marker is not found, the READ command is
terminated with CHECK CONDITION status. The Error Code
will be set to R
in
the
sense
data
Information
Bytes
(residue) between the requested Transfer Length and the
actual
transfer
continue the Read operation.
When a variable length block has been truncated due to
an
Illegal
Termination
signaled. Instead the Illegal Termination error takes
priority
and
the
.
EXHAUSTED
17.3.9.
Read After Write
If a READ command is issued when the Drive is in WRITE
mode
(i.e.
immediately
section 4.5. Command Sequencing for details), the Drive
will terminate the READ command immediately with CHECK
CONDITION status. The Error Code is set to either E
or E
DATA DETECTED
whether the tape is positioned before or after LEW. The
Drive continues to be in WRITE mode.
17-8
Tandberg SLR Product Line SCSI Functional Specifications
EAD RETRIES EXHAUSTED
list
will
will
be
set
length.
It
will
error,
Error
Code
is
after
a
-
-
ND
OF
DATA DETECTED AFTER
EAD RETRIES EXHAUSTED
. The Valid (VADD) bit
be
set
to
one.
to
the
difference
not
be
possible
Illegal
Length
set
to
R
EAD
write
operation,
LEW depending on
Read
).
The
to
is
not
RETRIES
see
-
-
ND
OF
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