Maxtor 10K V 5.12.10Control Mode Page (0Ah)

Field	Default	Description
	Value
Demand Read Re-		This field advises the drive on the retention priority to assign data read into the
tention	0
		cache that has also been transferred from the drive to the initiator.
Priority
Demand Write Re-		This field advises the drive on the retention priority to assign data written into
tention	0
Priority		the cache that has also been transferred from the cache memory to the medium.
Disable		This field specifies the selective disabling of anticipatory pre-fetch
	FFFFh	on long transfer lengths. The value in this field is compared to the number of
Pre-Fetch Transfer		sectors requested by the current READ command. If the number of sectors is
Length		greater the than the value specified, anticipatory pre-fetch is not performed for
		the command. When 0, anticipatory pre-fetch is disabled.
Minimum	0x100	This field specifies the desired number of sectors to be pre-fetched preceding
Pre-fetch		the requested Data.
Maximum	0x200	This field specifies the desired amount of total number of sectors to be pre-
Pre-fetch		fetched surrounding the requested data.
Maximum		Specifies an upper limit on the number of logical blocks computed as the max-
		imum pre-fetch. If this number of sectors is greater than the maximum pre-
Pre-fetch	0x200
		fetch, then the number of logical blocks to pre-fetch is reduced to the value
Ceiling
		stored in the maximum pre-fetch ceiling field.
FSW	0	The Force Sequential Write bit. Not supported by the drive.
LBCSS	TBD	Selects the units of the cache segment Size field. When LBCSS=0, Units are
		bytes per segment. When LBCSS=1, Units are blocks per segment.
DRA	0	When set, the device server will not read into cache any logical blocks beyond
		the addressed logical block (s). When not set, the device server may continue to
		read logical blocks beyond the addressed logical block (s).
VS		The Vendor-Specific bits. Not supported by the drive.
Number of Cache	variable	Specifies the number of cache segments to divide the cache into. This field is
Segments		used when the Size bit is 0.
Cache Segment Size	variable	Specifies the cache segment size, in either bytes per segment or blocks per seg-
		ment, depending on the state of the LBCSS bit. This field is used when the Size
		bit is 1
Non-CacheSegment	0	Not supported by the drive.
Size

5.12.10Control Mode Page (0Ah)

The Control Mode page controls the drive’s command processing and error handling policies. The data format and field descriptions are described in Table 5-68and Table 5-69respectively.

Table 5-68Control Mode Page - Data Format (Page 0Ah)

Bit	7		6	5		4	3	2		1	0
Byte
0	PS		Rsvd				Page Code (0Ah)
1						Page Length (0Ah)
2					Reserved					GLTSD	RLEC
3		Queue Algorithm Modifier					Re-		Qerr		DQue
							served

5-46 Maxtor Atlas 10K V