Maxtor 10K III manual Verify Command Descriptor Block-Data Format, Dpo

SCSI Description

￿￿￿￿8'4+(;The VERIFY￿%QOOCPFcommand￿￿￿(Jverifies￿the data on the medium for the Logical Block Address range specified. The data format and field descriptions are shown in Table 5- 210 and Table 5-211respectively.

VERIFY Command Descriptor Block-Data Format

	0		Operation Code (2Fh)
	1	Reserved		DPO	Reserved	BytChk	RelAdr
2	- 5		Logical Block Address
	6			Reserved
7	-			Verification Length
	9			Control

$[VG$KV		￿	￿	VERIFY￿Command￿-Field Descriptions￿ ￿	￿	￿
		Disable Page Out. When the value of the field = 1, the device server will assign
		the logical blocks accessed by this command the lowest priority for being
(KGNFDPO		fetched into or retained by the cache&GUETKRVKQP.
		When DPO = 0, the priority will be determined by fields in the Caching page.
		Byte Check. When the value is 1, the drive performs a byte-by-byte comparison
	Tableof5the-210data on the medium with the data sent by the initiator in the data-out buff-
BytChk		er transfer.
		When 0, the drive performs a medium verification with no data comparison. In
		this case, no data is sent by the initiator.
RelAdr		Relative Address. This feature is not supported;
Logical				VJG￿HKGNF￿OWUV￿DG￿￿￿
Block		The address of the first logical sector to be verified.
Address
Verifica-		The number of contiguous sectors that are to be verified. The drive returns a
tion		CHECK CONDITION status with the correct sense data if the specified transfer
Length		extendsTable5beyond-211		out of the logical sector space.

Maxtor Atlas 10K III 5-169