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From: mmason@psu-cs.UUCP (Mark C. Mason)
Newsgroups: net.unix-wizards
Subject: Re: RA60 hard error on 4.2BSD
Message-ID: <392@psu-cs.UUCP>
Date: Mon, 22-Apr-85 00:28:03 EST
Article-I.D.: psu-cs.392
Posted: Mon Apr 22 00:28:03 1985
Date-Received: Tue, 23-Apr-85 06:20:12 EST
References: <10072@brl-tgr.ARPA>
Organization: Dept. of Computer Science, Portland State University; Portland OR
Lines: 20


> 
>      uda0: hard error, disk transfer error, unit 0, grp 0x0, hdr 0x26aec
>      uda0: hard error, SDI error, unit 0, event 0353, hdr 0x0
> 
> The second error repeats about 6 times.

> 	What do these errors mean?  I'm not an expert on device drivers,
> anyone had similar problems or know of a cause?  Or better yet a fix?


	Ever since our DEC service rep started replacing the spindle
brushes on our 3 ra81s on a regular basis, we have had this problem all 
but disappear.  When the error messages start cropping up again, usually 
after about 3 mo., we check the brushes and usually find one or two that 
need replacement.  You might also persuade your rep to check the hardware
revs on your disks;  new ones seem to come out about twice a year.


					Mark