home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.os.os2.misc
- Path: sparky!uunet!paladin.american.edu!gatech!swrinde!zaphod.mps.ohio-state.edu!n8emr!elektro!charlie
- From: charlie@elektro.cmhnet.org (Charlie Smith)
- Subject: Re: Disk Interleave?? What the general rule of thumb??
- Message-ID: <1992Dec26.041143.11505@elektro.cmhnet.org>
- Organization: Why do you suspect that?
- References: <BzMu6G.L4p@news.cso.uiuc.edu>
- Date: Sat, 26 Dec 92 04:11:43 GMT
- Lines: 46
-
- In article <BzMu6G.L4p@news.cso.uiuc.edu> th9708@meibm8.cen.uiuc.edu (Todd Lee Henderson) writes:
- >
- >
- >
- >I posted about this several days ago and got very little reponse.
- >
- >Some time ago there was a discussion of the proper interleave for disk
- >under OS/2. I only got part of the discussion and seem to remember that
- >the appropriate interleave was 1 greater than the bios recommended as the
- >optimum. Any better facts on the subject??
- >
- >The disk to be used specifically is the WD 2200 214 meg IDE drive with
- >at least 512k HPFS Cache(unless someone wants to let me in on the 'best' size
- >cache for 16 meg systme memory??)
- >
-
- I'm not real OS/2 knowledgable, but - I've put together lots and lots of
- PC type machines with most types of disk under the sun.
-
- You want a 1:1 interleave for best performance, assuming you have a decent
- disk controller board for most disks. You only get to screw with the
- interleave factor when you do a low level format of the drive.
-
-
- With IDE, my understanding is that you don't want to redo the low level
- format of the drive, for these reasons:
-
- With the controller on the drive (IDE), you may not be able to
- see the real drive geometry.
-
- How you do the low level format is very specific to the drives
- geometry. Low level formats involve setting the track to track
- offsets in addition to the interleasve factor. Also, this usually
- lets you specify the number of sectors / track, which may or may
- not include "spare sectoring", depending on whether your controller
- will support it.
-
- Anyway, you get the idea. Now, why are you trying to specify your own
- choice of interleave for an IDE drive? I'd suggest leaving it alone.
-
-
- Charlie Smith charlie@elektro.cmhnet.org csmith@dsac.dla.mil whois ces10
- Eves: 614-471-1418 Days: 614-692-9064 FAX: 614-692-8217
- elektro.uucp TB WorldBlazer 614-471-9416 for anonymous uucp
- Columbus Ohio USA
-
-