Dell PowerVault TL1000 - Manual (Page 161)

3. The File Mark flag (Byte 2, bit 7) is set if a Space, Read, or Verify command
did not complete because a file mark was read.
4. The End of Media (EOM) flag (Byte 2, bit 6) is set if a Write or Write File
Marks command completed in the early warning area. Spacing into BOM also
causes this flag to be set. It is also set on an attempt to read or space past
EOD, or if an attempt is made to space into Beginning of Media.
5. The Illegal Length Indicator (ILI) flag (Byte 2, bit 5) is set if a Read or Verify
ended because a block was read from tape that did not have the block length
requested in the command.
6. The Information Bytes (Bytes 3-5) are only valid if the Valid flag is set. This
occurs only for current errors and not for deferred errors.
7. The Field Replaceable Unit field (Byte 14) is set to either zero or to a non-zero,
vendor-specific code indicating which part of the drive is suspected of causing
the failure.
8. The Clean (CLN) flag (Byte 21, bit 3) is set if the drive needs cleaning and
clear otherwise.
9. The Volume Label Fields Valid (VolValid) bit (Byte 21, bit 0) is set if the
Volume Label being reported is valid.
10. The Volume Label field (Bytes 22-28) reports the volume label if a cartridge is
loaded in the drive and Volume Label Fields Valid is set.
11. The Current Wrap field (Byte 29) reports the physical wrap of the tape. The
least significant bit reflects the current physical direction. A0h means that the
current direction is away from the physical beginning of the tape. A1h means
that the current direction is towards the physical beginning of the tape.
12. Relative LPOS fields (Bytes 30-33) reports the current physical position on the
tape.
13. SCSI Address field (Byte 34) reports the SCSI Bus Address for the drive.
Values returned range from 00h to 0Fh.
14. This field (Byte 35) contains the frame and drive number, passed across the
RS-422 serial interface.
Appendix C. Sense data C-9