Fujitsu Tape Unit Parameters M2488 Product Guide, Error Recovery and Reporting Parameters

TAPE UNIT PARAMETERS M2488 PRODUCT GUIDE

5-2.3 Error Recovery and Reporting Parameters

The Page 01 Error Recovery and Reporting Parameters CDB is illustrated in Table 5-4 and described in Table 5-5.

The parameters on this page specify the error recovery and reporting parameters that the target uses when transferring data between the initiator and the target. The parameters on this page do not apply to message system retries or positioning error recovery procedures.

Table 5-4. Page 01 - Error Recovery and Reporting Parameters

				BITS					MODE
									SENSE
BYTES	7	6	5	4	3	2	1	0	DEFAULT
									VALUES
0	PS *	Reserved			Page Code				81h
1				Additional Page Length					0Eh
2	Reserved		TB	Reserved	EER	PER	DTE	DCR	08h
3				Read Retry Count					10h
4-7				Reserved					00000000h
8				Write Retry Count					10h
9-11				Reserved					000000h

*The PS bit must be set to 0 on a MODE SELECT command. Note: Changeable fields in this page are shaded.

Table 5-5. Error Recovery and Reporting Parameters Field Description

BYTE	BIT	VALUE	DESCRIPTION
2	0	1	When the Disable Correction (DCR) bit is set to one, this bit indicates error correc-
			tion is not applied in the course of error recovery. Other normal error recovery oper-
			ations are not affected by this bit.
		0	When DCR is set to zero, this bit enables error correction.
			The DCR bit is reported as not changeable on a MODE SENSE command, and the
			default value is zero.
2	1	1	When the Disable Transfer on Error (DTE) bit set to one, and the PER bit is set to
			one, the target creates the CHECK CONDITION status and terminates the data
			transfer to the initiator immediately upon detection of an error. The transfer length
			is then not exhausted. The data of the block in error, which is the first erring block
			encountered, may not be transferred to the initiator depending upon the setting of
			the TB bit. The DTE bit can only be set to one if the PER bit is set to one. The target
			creates the CHECK CONDITION status with an ILLEGAL REQUEST sense key if
			PER bit is set to zero and the DTE bit set to one.
		0	When DTE is set to zero, this bit enables data transfer for any data which is recov-
			ered within the limits of the error recovery flags. Any erring block that would be
			posted, which is the last recovered block encountered, is not posted until the trans-
			fer length is exhausted.
			The DTE bit is reported as changeable on a MODE SENSE command, and the
			default value is zero.

5-4 CG00000-011503 REV. A April 1997