Seagate ST3285N, Руководство по эксплуатации продукта

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Byte 2 The
buffer full ratio field indicates, on Read commands,
how full the drive’s buffer is before reconnecting. The drive
rounds up to the nearest whole logical block. This parame-
ter is the numerator of a fraction that has 256 as its
denominator.
Byte 3 The
buffer empty ratio field indicates, on Write com-
mands, how empty the drive’s buffer is before reconnect-
ing to fetch more data. The drive rounds up to the nearest
whole logical block. This parameter is the numerator of a
fraction that has 256 as its denominator.
Bytes 4–5
The
bus inactivity limit field indicates the time, in 100-
µ
sec
increments, that the drive can assert the Busy signal
without handshakes until it disconnects. The drive may
round down to its nearest capable value. The default value
of 000A
H
allows the drive to maintain the BSY– signal for
1 msec without handshakes.
Bytes 6–7 The disconnect time limit field indicates the minimum
time, in 100-
µ
sec increments, the drive remains discon-
nected until it attempts to reconnect. A value of 0 indicates
that the drive is allowed to reconnect immediately.
Bytes 8–9 The
connect time limit field indicates the maximum time,
in 100-
µ
sec increments, that the drive should remain
connected until it attempts to disconnect. The drive may
round to its nearest capable value. A value of 0 means
that the drive can remain connected indefinitely until it
tries to disconnect.
Bytes 10–11 The maximum burst size field limits the amount of data
that can be transferred during the data phase before the
drive disconnects from the host. The value, multiplied by
512, indicates the maximum number of bytes that can be
contained in a single burst. A value of 0 means that there
is no limit to how many bytes can be transferred during a
single burst.
Bytes 12–15 Reserved.
94 ST3655 Family SCSI Drives Product Manual, Rev. A