Commands160
14 03h End of data not found A read-type operation failed because a format violation
related to a missing EOD data set, or there was an attempt
to read a brand new tape.
1A 00h Parameter list length error The amount of data sent in a Mode Select or Log Select
command is incorrect
or
The Mode Header indicates a Mode Block Descriptor but
no Mode Block Descriptor is sent.
20 00h Invalid command operation code The operation code in the command was not valid.
24 00h Invalid field in Command
Descriptor Block
An invalid field has been detected in a Command
Descriptor Block.
25 00h LUN not supported The command was addressed to a non-existent logical unit
number.
26 00h Invalid field in parameter list An invalid field has been detected in the data sent during
the data phase
26 01h Parameter not supported The command was addressed to a non-existent logical unit
number.
26 04h Invalid release of persistent
reservation
The Persistent Reservation holder has tried to release the
persistent reservation using the PERSISTENT RESERVE OUT
command, but the Scope or Type supplied was invalid.
27 00h Write-protected A write-type operation has been requested on a tape that
has been write-protected.
28 00h Not ready to ready transition,
medium may have changed
A tape has been loaded successfully into the drive and is
now ready to be accessed.
29 01h Power-on reset The drive has powered on since the host last accessed it.
29 02h SCSI bus reset SCSI drives: The drive has received a SCSI reset signal
since the host last accessed it.
FC drives: The drive has received its first process login. The
drive will be implicitly logged out after a Target Reset so
this ASCQ will be posted after the host has performed
port/process login.
29 03h Bus device reset SCSI drives: The drive has received a SCSI bus device reset
message since the host last accessed it.
FC drives: The drive has received a process login when it
was previously logged in for a particular host.
29 04h Internal firmware reboot The drive has reset itself.
29 05h Transceivers to SE SCSI drives: The transceivers on the bus have been reset to
Single-Ended.
29 06h Transceivers to LVD SCSI drives: The transceivers on the bus have been reset to
LVD.
2A 01h Mode parameters changed The Mode parameters for the drive have been changed by
an initiator other than the one issuing the command.
2A 02h Log parameters changed The Log parameters for the drive have been changed by
an initiator other than the one issuing the command.
2A 03h Reservations pre-empted A PERSISTENT RESERVE OUT command with the Clear
service action was attempted. All reservations and the
persistent reservation have been removed.
Code Description Explanation
