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From: dhom@cosmos.acs.calpoly.edu (David Hom)
Newsgroups: comp.sys.apple
Subject: Re: SCSI drives
Message-ID: <1989Dec4.153836.13099@polyslo.CalPoly.EDU>
Date: 4 Dec 89 15:38:36 GMT
References: <0.apple.net@pro-grouch>
Sender: news@polyslo.CalPoly.EDU (News Guru)
Reply-To: dhom@cosmos.acs.calpoly.edu.UUCP (David Hom)
Organization: Cal Poly State University -- San Luis Obispo
Lines: 22

In article <0.apple.net@pro-grouch> rmichel@pro-grouch.cts.com (Russel Michel) writes:
>  I have two Seagate hard drives (a ST-138N & a ST-296N) in a homebrew setup,
>and found that 11:1 interleave gave the best results with DiskTimer GS on both
>drives (I used SCSI.Hacker to low-level format them).  How many different
>interleaves did you try? I was able to obtain Read test times comparable to
>yours, and Seek test results in the 55-58 range.

I think I stopped at 10:1 because the reads were getting consistantly longer.

>  Installation of a SCSI card in slot 7 does not limit one to 2 partitions. 
>Limitation of # of partitions is primarily a factor of the operating system in
>use; ie. ProDos 8 & ProDOS 16 limit you to 2 partitions; GSOS allows up to
>seven partitions in a given slot. (I may be incorrect on that last part about
>GSOS; Advanced Disk Utilities may be the actual limiting factor)
>
And you can actually ACCESS more than two PRODOS partitions out of slot seven?
Yes, the two partition limit is a ProDOS limitation, but since we're using the
ProDOS FST, we have that limitation.  If you can access more than two ProDOS
partitions out of slot seven, let me know, I can upgrade my 60Meg to an 80  :)

Dave
dhom@cosmos.acs.calpoly.edu