HP LTO 4 SCSI, LTO 4 FC, LTO 4 SAS manual Flags, Type

Flags

The following table lists the flags that could potentially be supported in tape drives. Of these, flags 3,4,5,6,20,22 and 31 are mandatory for drives such as Ultrium drives that support cleaning cartridges.

The flags are grouped into the following sections:

•Flags 1 to 19: For tape drive write/read management

•Flags 20 to 25: For cleaning management

•Flags 26 to 39: For tape drive hardware errors

•Flags 50 to 60: For additional tape drive errors

For each flag, the message that the host software should display to the user is given, together with the cause of the flag being set. The Type column classifies the flags by seriousness into the following three groups:

I	Information	A suggestion to the user.
W	Warning	The user is advised to take action. Performance or data
		may be at risk otherwise.
C	Critical!	Take action immediately.

The Set column indicates if the flag can be set by LTO 4 drives. The other flags are supported but never set.

	Flag	Type	Set	Recommended Host Message	Cause
Flags for Tape Drive Write/Read Management
1	Read warning	W		The tape drive is having problems	The drive is having severe
				reading data. No data has been lost,	trouble reading.
				but there has been a reduction in the
				capacity of the tape.
2	Write warning	W		The tape drive is having problems	The drive is having severe
				writing data. No data has been lost,	trouble writing.
				but there has been a reduction in the
				capacity of the tape.
3	Hard error	W		The operation has stopped because	This flag is set for any
				an error has occurred while reading	unrecoverable
				or writing data which the drive	read/write/positioning
				cannot correct.	error, and is cleared
					internally when the tape is
					ejected. The flag is set as an
					explanation of the error in
					conjunction with one of the
					recovery action flags 4, 5,
					or 6.

HP LTO Ultrium 4 drives technical reference manual, volume 2: software integration 79 HP restricted