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From: Michael Smith <msmith@atrad.adelaide.edu.au>
Message-Id: <199703060024.KAA07675@genesis.atrad.adelaide.edu.au>
Subject: Re: NCR 510 troubles
In-Reply-To: <199703051649.TAA29903@gw.rinet.ru> from Dmitry Morozovsky at "Mar 5, 97 07:49:33 pm"
To: marck@gw.rinet.ru (Dmitry Morozovsky)
Date: Thu, 6 Mar 1997 10:54:45 +1030 (CST)
Cc: freebsd-scsi@freebsd.org, freebsd-hardware@freebsd.org
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Dmitry Morozovsky stands accused of saying:
> 
> After upgrading newsserver from cnews to inn,
> regularly, there are very sad things such as:
> 
> Mar  5 16:38:50 gw2 /kernel: ncr0: restart (ncr dead ?).
> Mar  5 16:38:51 gw2 /kernel: sd5(ncr0:4:0): UNIT ATTENTION asc:29,0
> Mar  5 16:38:51 gw2 /kernel: sd5(ncr0:4:0):  Power on, reset, or bus device reset occurred
> Mar  5 16:38:51 gw2 /kernel: , retries:3
> Mar  5 16:38:51 gw2 /kernel: sd3(ncr0:0:0): UNIT ATTENTION asc:29,0
> Mar  5 16:38:51 gw2 /kernel: sd3(ncr0:0:0):  Power on, reset, or bus device reset occurred field replaceable unit: 14
> Mar  5 16:38:51 gw2 /kernel: , retries:3
> Mar  5 16:38:51 gw2 /kernel: sd5(ncr0:4:0): FAST SCSI-2 125ns (8 Mb/sec) offset 8.
> Mar  5 16:38:57 gw2 /kernel: ncr0: restart (ncr dead ?).
> Mar  5 16:38:58 gw2 /kernel: sd3(ncr0:0:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
> Mar  5 16:38:58 gw2 /kernel: sd5(ncr0:4:0): FAST SCSI-2 125ns (8 Mb/sec) offset 8.
> Mar  5 16:38:58 gw2 /kernel: sd4(ncr0:1:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
> Mar  5 16:38:58 gw2 /kernel: sd4(ncr0:1:0): UNIT ATTENTION asc:29,0
> Mar  5 16:38:58 gw2 /kernel: sd4(ncr0:1:0):  Power on, reset, or bus device reset occurred field replaceable unit: 14
> Mar  5 16:38:58 gw2 /kernel: , retries:4
> 
> then system either crashes or one of ncr disks become missing.

You don't say anything about your hardware setup (case, PSU, fans etc.), but
I'd start by checking that your disks aren't overheating, that the
PSU is holding up OK (with that many disks a 'normal' PC PSU just won't
cut it).  INN has much higher expectations of your disks than C-news does,
and the extra work may be more than your farm can handle.

Another item worth checking is your power supply connections, although
with so many disks failing, unless you are using a mess of Y-splitter
power cables I don't think that'd be the cause.

-- 
]] Mike Smith, Software Engineer        msmith@gsoft.com.au             [[
]] Genesis Software                     genesis@gsoft.com.au            [[
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