HP LTO 4 SAS 5h-ILLEGAL REQUEST, Action, A MODE SELECT parameter list sent to the drive contains

Code	Meaning	Comments
53 01	Unload tape failure	The tape unload failed because it cannot be physically
		completed at this point in time.
	Action:	see above
82 83	Bad microcode detected	The data transferred to the drive during a firmware
		upgrade is corrupt or incompatible with the drive
		hardware.
	Action:	see above

5h—ILLEGAL REQUEST

The following actions apply to all additional sense codes in this group:

Action:

1.Terminate the current I/O and return the appropriate error.

2.Log the incident in the system log.

3.Print out all the REQUEST SENSE data bytes and check bytes 15 through 17 to identify the location of the offending bits or bytes.

4.Refer to the table of Drive Error Codes in Volume 3, SCSI Interface, of the Ultrium Technical Reference Manual to understand why the current values were rejected.

5.This is likely to be an application fault. Send a message to the console “Illegal SCSI request to tape drive”.

Code	Meaning	Comments
1A 00	Parameter list length error	A MODE SELECT parameter list sent to the drive contains
		one of the following:
		• An incomplete Mode Parameter header (must be
		4 bytes)
		• An incomplete Mode Block Descriptor (must be 0 or
		8 bytes)
		• An incomplete Mode page
20 00	Invalid command opcode	The drive does not recognize the opcode of the
		command it has received.
24 00	Invalid field in CDB	The drive has detected an invalid field in a command
		descriptor block.
25 00	LUN not supported	The command was addressed to a logical unit number
		that does not exist.
26 00	Invalid field in parameter	The drive detected an invalid field among the command
	list	parameters sent during the data phase.
26 01	Parameter not supported	A request for an invalid page number has been sent.

68 Sense keys and codes

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