From: John P . Looney (valen at domain tuatha.org)
Date: Mon 27 Sep 1999 - 14:09:27 IST
On Mon, Sep 27, 1999 at 12:58:41PM +0000, Niall O Broin mentioned:
> >Kate. trying to kill time, while formatting a 130GB array of 4GB disks :)
>
> I take it that would be 129+1 RAID-5 :-)
Er no...straight stripe actually :)
> BTW have you done the maths on MTBF with that large a number of disks. A
> quick calculation assuming a 5 year MTBF on the disks gives you about a
> 1.8% chance of a disk failing on any given day or an MTBF for the array
> of 57 days - now that's what I call reliable :-) In fact, it'd be an
> ideal box to put 'doze 98 on - then you could coincide the disk
> replacement with the reinstallation of 'doze :-)
I really don't care if a few disks die. This is only an emergency
ressurection of a database machine that was decommissioned ages ago, and
someone realised that there were some tables that weren't moved elsewhere
still on it.
Anyway, can't see MS porting Windows to 16-cpu sparc machines any time
soon. I can't believe it. It's still formatting the array. It's
113,000,000,000 bytes into it though.
Kate
-- Microsoft. The best reason in the world to drink beer.
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