Caching Parameters Page (08H) - Seagate SCSI Interface Product Manual

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5.12.7

Caching Parameters page (08h)

The Caching Parameters page for Mode Sense/Mode Select defines the parameters that affect the use of the
cache (Table 95).
Table 95: Caching Parameters page (08h)
Bit 7
Byte
0 PS [1]
1 Page Length (12h)
2 IC [3]
Changeable [2]
3 Demand Read Retention Priority [11]
Changeable [2]
4 (MSB)
5
Changeable [2]
6 (MSB)
7
Changeable [2]
8 (MSB)
9
Changeable [2]
10 (MSB)
11
Changeable [2]
12 FSW [17]
Changeable [2]
13 Number of Cache Segments [20]
Changeable [2]
14 (MSB)
15
Changeable [2]
16 Reserved
17 (MSB)
18
19
Changeable [2]
Notes.
[1] The returned Parameter Savable (PS) bit of 1 indicates that page 01h parameter data is savable.
[2] A value of zero means this bit function is not directly changeable by an initiator, a value of 1 means the bit
function is directly changeable by an initiator (see Mode Select command). See individual drive's Product
Manual, Volume 1, section showing changeable values.
6 5
Page Descriptor Header
Reserved
ABPF [4] CAP [5]
Disable Prefetch Transfer Length [13]
Maximum Prefetch Ceiling [16]
LBCSS [18] DRA [19]
Non-Cache Segment Size [22]
SCSI Interface Product Manual, Rev. J
4 3
Page Code (08h)
DISC [6] SIZE [7]
Write Retention Priority [12]
Minimum Prefetch [14]
Maximum Prefetch [15]
Cache Segment Size [21]
2 1
WCE [8] MF [9]
Reserved
0
RCD [10]
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)