Table of Contents
Advertisement
Command Specifications
This parameter indicates the same value for all initiators and if it is changed
by any initiator, a UNIT ATTENTION condition (UNIT ATTENTION [=6] /
Mode select parameter changed [=2A-01]) is generated for all the initiators
that did not change it.
This parameter can be changed though the IDD disregards the specification
of this field. The IDD divided the Cache Segments according to the inherent
algorithm. That is, the Cache Segment size is best tuned per the request data
size of Host command. Within one Cache Segment, data for various
commands are stored. The biggest Cache Segment size is approximately 476
KB.
IDD does not support this parameter. IDD disregards the specification of this
field.
q. Non cache buffer size
If this field is greater than zero, this field advises the device server how many
bytes the application client requests that the device server allocate for a
buffer function when all other cache segments are occupied by data to be
retained. If the number is at least one, caching functions in the other
segments need not be impacted by cache misses to perform the buffer
function. The impact of this field equals 0 or the sum of this field plus this
field greater than the buffer size is vendor-specific.
This bit is not supported for the IDD. The IDD disregards the specification in
this bit.
4-50
C141-C009
Advertisement
Table of Contents
