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5.1 Mode Parameters
This parameter can be changed though the HDD disregards the specification
of this field. The HDD 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.
q. Non cache segment 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 HDD. The HDD disregards the specification
in this bit.
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