Table C-2. LTO Tape Drive Sense Data (continued)
Byte
Bit Address or Name
7 6 5 4 3 2 1 0
12–13
Additional Sense Code (ASC)
Additional Sense Code Qualifier (ASCQ)
Byte 12 Byte 13
ASC ASCQ
00 00 - No additional sense — The flags in the sense data indicate the reason for
the command failure
00 01 - Filemark detected — A Read or Space command terminated early due to an FM
The FM flag is set.
00 02 - EOM — A Write or Write File Marks command failed because the physical
end of tape was encountered, or a Read or Space command encountered EOM
The EOM flag is set
00 04 - BOM — A space command ended at Beginning of Tape
The EOM bit is also set
00 05 - EOD — Read or Space command terminated early
because End of Data was encountered
00 16 - Operation in progress
04 00 - Cause not reportable — A cartridge is present in the drive, but it is in the
process of being unloaded
04 01 - Becoming Ready — A media access command was received during a
front panel initiated load or an immediate reported load command
04 02 - Initializing Command Required — A cartridge is present in the drive, but is not
logically loaded. A Load command is required
04 03 - Manual Intervention Required — A cartridge is present in the drive but could
not be loaded or unloaded without manual intervention
04 12 - Logical Unit Not Ready, Offline
08 01 - Logical Unit Communication Failure
09 00 - Track Following Error (Servo)
0C 00 - Write Error — A Write operation has failed. This is probably due to bad
media, but may be hardware related
11 00 - Unrecovered Read Error — A Read operation failed. This is probably due
to bad media, but may be hardware related
14 00 - Recorded Entity Not Found — A space or Locate command failed because
a format violation prevented the target from being found.
14 03 - End Of Data not found — A Read type operation failed because a format
violation related to a missing EOD data set
17 01 - Recovered Data with Retries
1A 00 - Parameter list length error — The amount of parameter data sent is incorrect
20 00 - Invalid Command Operation Code — The Operation Code in the command
was not a valid Operation Code
24 00 - Invalid field in CDB — An invalid field has been detected in a
Command Descriptor Block
25 00 - LUN not supported — The command was addressed to a non-existent
logical unit number
26 00 - Invalid Field in Parameter List — An invalid field has been detected in the
data sent during the data phase
27 00 - Write Protect — A Write type operation has been requested on a cartridge which
has been write protected
28 00 - Not Ready to Ready Transition — A cartridge has been loaded successfully into
the drive and is now ready to be accessed
28 01 - Import or Export Element Accessed
29 00 - Reset — The drive has powered on, received a reset signal or a bus device
reset signal since the initiator last accessed it
29 04 - Device Internal Reset
(Continued on next page)
Appendix C. Sense Data C-9
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