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- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!sun-barr!ames!sgi!classic.asd.sgi.com!jeremy
- From: jeremy@classic.asd.sgi.com (Jeremy Higdon)
- Subject: Re: CDC Drive Parameters
- Message-ID: <ool1kbc@sgi.sgi.com>
- Sender: jeremy@classic.asd.sgi.com
- Organization: Silicon Graphics, Inc. Mountain View, CA
- References: <1992Aug19.011509.7427@iscnvx.lmsc.lockheed.com> <ooj77q8@zuni.esd.sgi.com>
- Date: Wed, 19 Aug 1992 05:53:43 GMT
- Lines: 28
-
- In article <ooj77q8@zuni.esd.sgi.com>, olson@anchor.esd.sgi.com (Dave Olson) writes:
- > In <1992Aug19.011509.7427@iscnvx.lmsc.lockheed.com> cunning@arthur.msd.lmsc.lockheed.com (Dave Cunningham) writes:
- >
- > | My in-company computer repair folks replaced my failing 380 Mb system
- > | disk on a 4D20 with with a similar one last used on a sun. It's the
- > | same model (CDC 94171-9) but with a different firmware rev. (0045).
- > | I formatted it with stand alone fx, using the "auto" command. That
- > | went ok, but I notice that some of the drive parameters are different
- > | than on my SGI CDC 380s- specifically, "Report recovered errors" is
- > | enabled, "Auto bad block realloc. on read" is enabled, "Error retry attempts"
- > | is 16, and "Drive read-ahead" is enabled.
- > |
- > | Are all of these changeable with fx, or are they jumpered ?
- > | If so, should I change them or assume fx did what was right ?
- >
- > They are all changeable with fx. recovered error reporting
- > is a religious issue, but ESD systems ship with it off, and
- > ASD systems with it on, for the most part (different divisions,
- > different religions). I think we ship with auto bad block
- > reallocation enabled on all drives that support it from both
- > divisions these days.
-
- Actually, only the 1.6GB drives had it on, and the future drives won't,
- unless the drive thinks that the recovered error is a harbinger of
- future unrecoverable errors.
-
- jeremy
-
-