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Code
Description
14 03h End of data not found
1A 00h Parameter list length error
20 00h Invalid command operation code
24 00h Invalid field in Command
Descriptor Block
25 00h LUN not supported
26 00h Invalid field in parameter list
26 01h Parameter not supported
26 04h Invalid release of persistent
reservation
27 00h Write-protected
28 00h Not ready to ready transition,
medium may have changed
29 01h Power-on reset
29 02h SCSI bus reset
29 03h Bus device reset
29 04h Internal firmware reboot
29 05h Transceivers to SE
29 06h Transceivers to LVD
2A 01h Mode parameters changed
2A 02h Log parameters changed
2A 03h Reservations pre-empted
160
Commands
Explanation
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.
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.
The operation code in the command was not valid.
An invalid field has been detected in a Command
Descriptor Block.
The command was addressed to a non-existent logical unit
number.
An invalid field has been detected in the data sent during
the data phase
The command was addressed to a non-existent logical unit
number.
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.
A write-type operation has been requested on a tape that
has been write-protected.
A tape has been loaded successfully into the drive and is
now ready to be accessed.
The drive has powered on since the host last accessed it.
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.
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.
The drive has reset itself.
SCSI drives:
The transceivers on the bus have been reset to
Single-Ended.
SCSI drives:
The transceivers on the bus have been reset to
LVD.
The Mode parameters for the drive have been changed by
an initiator other than the one issuing the command.
The Log parameters for the drive have been changed by
an initiator other than the one issuing the command.
A PERSISTENT RESERVE OUT command with the Clear
service action was attempted. All reservations and the
persistent reservation have been removed.
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