Caching Page (08H) - Quantum Atlas 10K II 9.2/18.4/36.7/73.4 GB Product Manual

MODE SELECT (6) Command (15h) (continued)

5.14.3.6 Caching Page (08h)

The Caching Page controls the drive's cache management policy.
Bit 7
Byte
0 PS
1
2
3
4 – 5
6 – 7
8 – 9
10 – 11
12 FSW
13
14 – 15
16
17 – 19
NOTES: 1. Fully supported and temporary fields are underlined. Informational fields are
not underlined. The PS bit is underlined, meaning it will be set on a MODE
SENSE command, since the page is savable
2. Bytes 12 to 19 are returned only if the device operating definition is SCSI-3.
Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
6 5
Rsvd
Reserved
Demand Read Retention Priority
Disable Pre-Fetch Transfer Length
Maximum Pre-Fetch Ceiling
LBCSS DRA
Number of Cache Segments
Non-Cache Segment Size
Figure 5–32 Caching Page — Data Format
4 3
Page Code (08h)
Page Length (12h)
WCE
Demand Write Retention Priority
Minimum Pre-Fetch
Maximum Pre-Fetch
VS VS
Cache Segment Size
Reserved
SCSI Description
2 1 0
MF RCD
Reserved
5–73