
EEPROM
option
Definition Possible values Default
value
Option is
set to...
REQUEST
SENSE
format
Specifies the number of
bytes of data returned by
the REQUEST SENSE
command.
EXB-8500 – The REQUEST SENSE
command returns 29 bytes of data in
the standard form.
EXB-8200 – The REQUEST SENSE
command returns 26 bytes of data. A
deferred error code is never returned in
byte 0.
EXB-8500
TNP and
LBOT bytes
live
Controls what is reported
for the TNP (Tape Not
Present) and LBOT bits in
byte 19 of the Request
Sense data.
YES – The values of TNP and LBOT
always reflect the live state of the CTS.
Even if the previous command caused
an error, these bits will reflect the
current state of the CTS, not the error
state.
NO – The values of TNP and LBOT are
not changed if the initiator has stored
sense data associated with it. Sense
data remains stored until another
command (other than REQUEST
SENSE or INQUIRY) is issued.
YES
Report 0D at
PEOT
Controls the reporting of
sense key 0Dh (Volume
Overflow) when the CTS
encounters PEOT during a
read, write, or write
filemarks operation.
YES – The CTS should return sense
key 0Dh when it encounters PEOT.
NO – The CTS should never return
sense key 0Dh when it encounters
PEOT; instead, you should use the
EOM bit and sense key 0h (No Sense)
to detect PEOT.
YES
Always set
EOM at
LBOT
Controls the reporting of
EOM at LBOT.
YES – The CTS should always set the
EOM bit at LBOT.
NO – The CTS should set the EOM bit
at LBOT only if LBOT was encountered
during a backspace operation.
YES
Allow
reporting of
LEOT as
deferred
Controls the reporting of
LEOT (early warning)
during write and write
filemarks operations.
YES – The CTS should report a
deferred error if LEOT was
encountered during the previous write.
This could occur in buffered mode and
assumes that LEOT is an exact
position on the tape.
NO – The CTS should never report
LEOT as a deferred error. This
assumes that LEOT is a logical
condition, not a specific location on the
tape. Thus, when the CTS encounters
LEOT, it reports it during the first write
that is after the physical LEOT. (SCSI-2)
YES
A-14
EXB-8205 and EXB-8505
(Standard and XL)
510503
Appendix A EEPROM Options
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