User's Guide

Chapter 3 Emulated DLT7000 SCSI Commands
Request Sense (03h)
252 Quantum DX-Series Software Interface Guide
Table 203 Supported
Sense Keys
Tape Motion
Hours
This field reports the number of tape motion (i.e.,
head wear) hours. Format is given as a hexadecimal
word (2 bytes).
Power On
Hours
This field reports the total number of hours that
drive power has been applied since its last power
on cycle (not total power on hours over the device’s
lifetime). Format is given as a hexadecimal
longword (4 bytes).
Tape
Remaining
This field reports the amount of tape remaining in 4
KB (4096 bytes) blocks.
Field Name Description
0h NO SENSE. Check the Filemark/EOM/ILI bits and
the Additional Sense Code/Additional Sense Code
Qualifier bytes.
1h RECOVERED ERROR. This can be caused by
rounding of Mode Parameters on a MODE SELECT,
or may report that READ/WRITE error rates are
reaching subsystem specification limits for optimal
operation. The device may still be able to continue
to function without any unrecovered errors for a
long period of time, however. No CHECK
CONDITION is generated unless the PER bit of
Mode Page 01h is set.
2h NOT READY. The tape medium is not ready for
tape operation commands. Tape medium might not
be present in the drive or may be in the process of
loading or calibrating.
3h MEDIUM ERROR. An unrecoverable WRITE,
READ, or positioning error has occurred. Detailed
device-specific information may be available.
Field Name Description