HP LTO 4 SAS, LTO 4 FC, LTO 4 SCSI manual 1h-RECOVERED ERROR, 2h-NOT READY, Action

1h—RECOVERED ERROR

NOTE: Reporting of recovered errors defaults to OFF.

Action: In all cases, action depends on the device class and operating system.

Code	Meaning	Comments
37 00	Rounded parameter	The drive needs to round off the value of a parameter
		sent by MODE SELECT because it cannot store it to the
		degree of accuracy sent by the command.
5D 00	Failure prediction threshold	Failure Prediction thresholds have been exceeded
	exceeded	indicating that TapeAlert flags have been activated.
	Action:
		Retrieve the TapeAlert log page to find out which flag
		has been activated and advise the user accordingly.
5D FF	Failure prediction threshold	The Informational Exceptions Mode page has been sent
	exceeded (false)	with the Test field set to 1 and the DExcpt field to 0,
		causing the drive to generate a false informational
		exception condition (a false device failure).
	Action:	Since the function of the Test field is simply to test that an
		informational exception condition will produce a CHECK
		CONDITION and that the exception will be reported to
		the TapeAlert log, no action is necessary.

2h—NOT READY

Code	Meaning	Comments
04 00	LUN not ready, no cause	This is set if an unload is occurring with immediate report
	to report	on, or initiated through the front panel, or a different host
		initiated the command. It is present for the duration of
		the unload or eject, after which the additional sense
		changes to 3A 00h (medium not present) or 0402h
		(logical unit not ready, initializing command required).
	Action:	1.	Issue a message to the console stating that the tape is
			currently being unloaded from the drive.
		2.	Poll the drive until the additional sense changes to
			3A 00h or 04 02h.
		3.	Instruct the user what to do, based on the application
			and the previous sequence of commands.
		4.	Depending on the application, the software may
			terminate the current I/O.

HP LTO Ultrium 4 drives technical reference manual, volume 2: software integration 59 HP restricted