Table of Contents
Advertisement
Command Specifications
"1": Data put into the cache via a READ command was replaced sooner than
"0": Indicates the device server was not distinguish between retaining the
h.
Write retention priority (not supported)
This field advises the device server the retention priority to assign for data
written into the cache that has also been transferred from the cache memory
to the medium.
"F": Data put into the cache during a WRITE or WRITE and VERIFY
"1": Data put into the cache during a WRITE or WRITE and VERIFY
"0": Indicates the device server was not distinguish between retaining the
i.
Pre-fetch inhibit block count (not supported)
This parameter is used to selectively prohibit data Look-Ahead operations in
the READ command or the READ EXTENDED command. When the
"Transfer block count" specified in the CDB of the READ command or the
READ EXTENDED command is greater than the value in this parameter,
data Look-Ahead operations are not executed in that command. This bit
cannot be changed. The IDD disregards the specification in this bit and
operates according to the "Default" value (= X 'FFFF').
j.
Minimum pre-fetch (not supported)
This parameter specifies the minimum quantity of logical data blocks pre-
fetched to the data buffer with the READ command or READ EXTENDED
command.
This parameter cannot be changed. The IDD disregards the specification in
this field.
k.
Maximum pre-fetch (not supported)
This parameter specifies the maximum quantity of logical data blocks pre-
fetched to the data buffer with the READ command or READ EXTENDED
command.
The IDD varies the pre-fetch volume according to the volume of data
requested by the READ command or READ EXTENDED command. The
value reported to the MODE SENSE command always indicates the number
of blocks corresponding to 1 cache segment – 1.
This parameter cannot be changed. The IDD disregards the specification in
this field.
4-48
data placed into the cache by other means.
indicated data and data placed into the cache memory by other means.
command was not replaced if there is ohter data in the cache that was
placed into the cache by other means and it may be replaced.
command was replaced sooner than data placed into the cache by other
means.
indicated data and data placed into the cache memory by other means.
C141-C009
Advertisement
Table of Contents
