User Manual

SCSI Commands Reference Manual, Rev. J 319
www.seagate.com Parameters for direct access devices
5.2.6 Cache Statistics page (37h/00h)
Log Page code 37h specifies Cache Statistics page. The page format is shown in Table 288.
Table 287 Parameter codes
Parameter code Description
Resettable or
Changeable [a]
0000h
This parameter code represents the number of logical blocks that have been sent to
a SCSI initiator port.
Reset
Only
0001h
This parameter code represents the number of logical blocks that have been
received from a SCSI initiator port.
Reset
Only
0002h
This parameter code represents the number of logical blocks read from the cache
memory that have been sent to a SCSI initiator port.
Reset
Only
0003h
This parameter code represents the number of READ and WRITE commands that
had data lengths equal or less than the current segment size.
Reset
Only
0004h
This parameter code represents the number of READ and WRITE commands that
had data lengths greater than the current segment size.
Reset
Only
[a] The keywords in this column -- Always, Reset Only, and Never -- are defined in 5.2.2.3.
Table 288 Cache Statistics page (37h)
Bit
Byte
7 6 5 4 3 2 1 0
0 DS SPF (0b) PAGE CODE (37h) (see 5.1.1)
1 SUBPAGE CODE(00h) (see 5.2.2.1)
2 (MSB)
PAGE LENGTH (see 5.1.1)
3 (LSB)
CACHE STATISTICS LOG PARAMETERS
4 (MSB)
PARAMETER CODE (see table 287)
. . . (LSB)
. . . PARAMETER CONTROL BYTE – binary format list log parameter (see 5.2.2.2.2.5)
. . . PARAMETER LENGTH
. . .
PARAMETER VALUE
. . .
. . . . . .
. . . (MSB)
PARAMETER CODE (see table 287)
. . . (LSB)
. . . PARAMETER CONTROL BYTE – binary format list log parameter (see 5.2.2.2.2.5)
. . . PARAMETER LENGTH
. . .
PARAMETER VALUE
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