--- Marten van de Kraats <[EMAIL PROTECTED]> wrote:
> I am trying a pretty fast hard disk in a LC... Which
> format
> interleave is the best: 1, 2, 3, 4???
1:1 interleave is fine for all Macs except the Plus
and SE. The Plus normally uses 3:1 and the SE 2:1
but that isn't really a factor with newer, faster
drives that have 256K or more onboard cache.
The older drives with very little cache or just a
couple of byte buffers would feed data too fast
for the Plus and SE SCSI controller to handle.
Likewise the drives were too fast for the SCSI
controller to keep up with when writing data.
1:1 interleave will work on the Plus and SE with
those drives but very slowly because the drive has
to spin even more times to write the data.
Anyone want to do an experiment? Take a Plus or SE
and a hard drive with 256K or more cache. Format
the drive at 1:1, 2:1 then 3:1 and see which is
fastest.
Of course the best interleave for each depends
on the Mac and the drive, but as above there
should be no problem with any other Mac using 1:1.
SCSI Director 1.7.2 has buttons to select the
interleave for Plus, SE and "other" which is 1:1. :)
P.S. A 128 or 512 with a 3rd party SCSI expansion
would most likely need 3:1 interleave.
=====
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