[comp.sys.mac.hardware] Hard Disk Interleave on a Mac Plus?

derosa@motcid.UUCP (John DeRosa) (05/24/91)

I know that the "standard" interleave for a
Hard disk on a Mac Plus is 3:1.  I assume
that SE's are the same way (3:1)  as they
run at about the same CPU Speed (even thought
the SE has a faster SCSI bus).

What is the reason behind different interleaves,
slow SCSI or slow CPU?  I assume CPU.

Anyway, we are about to upgrade our SE's and Plus's with
Total Systems Integration's 40mhz accelerators.  These 
come with a fix to the Plus's SCSI bus to get
it up to the best speed (handshaking was added).
Also included is an auxilary power supply and a 
video interface kit for external monitors.

THE QUESTION IS: can I change the interleave on the
Hard Drives on the SE's and Plus's to 1:1 to take
advantage of the increased CPU speed?  Do I need 
to completely reformat the drive or can I do it
"on the fly"?

P.S. You may wonder why we are upgrading our Plus's
instead of just buy faster Mac's.  The reasons are
1) we would still have the old macs hanging around
and 2) new computers are on a restricted diet 
lately while we have budget for these types of 
upgrades.
-- 
= Enjoy!                                                                   = 
=          John DeRosa, Motorola, Inc, Cellular Infrastructure Group       =
= e-mail:    motcid!derosaj@uunet.uu.net, n1111@applelink.apple.com        =
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