8.8.8 Mode Page 8 (Caching Parameters)
000000h
(MSB) Non Cache Segment Size
(LSB)
17
18,19
00h
Reserved = 0
16
00h
00h
(MSB) Cache Segment Size
(LSB)
14-15
0Eh
Number of Cache Segments
13
00h
Reserved = 0
DRA
LBCSS
FSW
12
00h
Maximum Pre-fetch Ceiling
10-11
FFh
FFh
Maximum Pre-fetch
8-9
00h
00h
Minimum Pre-fetch
6-7
FFh
FFh
Disable Pre-fetch Transfer Length
4-5
00h
Write Retention Priority
Demand Read
Retention Priority
3
04h
RCD
MF
WCE
SIZE
DISC
CAP
ABPF
IC
2
12h
Page Length = 12h
1
88h
Page Code = 08h
RSVD=0
PS
0
0
1
2
3
4
5
6
7
Default
Bit
Byte
Figure 88. Page 8 (Caching Parameters)
The caching parameters page defines parameters that affect the use of the cache.
Ÿ
IC
(Initiator Control) is internally ignored by the Target. The Target will always use the Number of
Cache Segments or Cache Segment Size fields.
Ÿ
ABPF
(Abort Pre-Fetch) is not supported. The Target aborts the pre-fetch based on the internal
algorithm.
Ÿ
CAP
(Caching Analysis Permitted) is not supported and is internally ignored by the Target.
Ÿ
DISC
(Discontinuity) is not supported and is internally ignored by the Target.
Ÿ
SIZE
(Size Enable) bit when set to one indicates that the Cache Segment Size is to be used to
control caching segmentation. When SIZE is set to zero, the initiator requests that the Number of
Cache Segments is to be used to control caching segmentation.
Ÿ
WCE
(Write Cache Enable) bit when set at zero indicates that the drive must issue Good Status for
Write(6) or Write extend(10) command only after successfully writing the data to the media. When
Ultrastar 36LZX hard disk drive specifications
112
Содержание Ultrastar 36LZX
Страница 12: ...Ultrastar 36LZX hard disk drive specifications 12...
Страница 14: ...Ultrastar 36LZX hard disk drive specifications 14...
Страница 24: ...Ultrastar 36LZX hard disk drive specifications 24...
Страница 26: ...Ultrastar 36LZX hard disk drive specifications 26...
Страница 56: ...Ultrastar 36LZX hard disk drive specifications 56...
Страница 188: ...Ultrastar 36LZX hard disk drive specifications 188...
Страница 190: ...Ultrastar 36LZX hard disk drive specifications 190...
Страница 232: ...Ultrastar 36LZX hard disk drive specifications 232...