SCSI Description
Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5–75
MODE SELECT (6) Command (15h) (continued)
Table 5–36 Caching Page — Field Descriptions (continued)
Default
Field Value Description
Minimum Pre-fetch 0This field indicates the number of sectors that are to be pre-fetched.
See also MF.
Maximum Pre-fetch 0421h This field indicates the maximum amount of data to pre-fetch into
the cache as a result of one READ command. Not supported by
the drive.
Maximum Pre-fetch 0421h Specifies an upper limit on the number of logical blocks
Ceiling computed as the maximum pre-fetch. If this number of sectors is
greater than the maximum pre-fetch, then the number of logical
blocks to pre-fetch is reduced to the value stored in the maximum
pre-fetch ceiling field. Not supported by the drive.
FSW 0The Force Sequential Write bit. Not supported by the drive.
LBCSS 0The Logical Block Cache Segment Size bit. Not supported by the
drive.
DRA 0The Disable Read-Ahead bit. Not supported by the drive.
VS The Vendor-Specific bits. Not supported by the drive.
Number of Cache 27 Ignored by the drive.
Segments
Cache Segment Size 0 Not supported by the drive.
Non-Cache Segment 0 Not supported by the drive.
Size
NOTE: Fully supported fields are underlined. Unsupported and ignored fields are not underlined.
The PS bit is underlined, meaning it will be set on a MODE SENSE command, since the
page is savable.