Ok this is ridiculous.

---
David Thornton
ATT Canada - Internet Data Centre Services
Me: dthorntoncorp.attcanada.ca 905-896-6263
My Department: Internet Data Centre Services supportboaw.net 905-896-6386
My Supervisor: Mike Molson mmolsoncorp.attcanada.ca 906-896-6268 
> -----Original Message-----
> From: Eino Tuominen [mailto:einoutu.fi]
> Sent: Thursday, September 27, 2001 2:41 PM
> To: David Thornton
> Cc: postfix-userscloud9.net
> Subject: Re: 1.000.000 email posted in a single delivery process
> 
> 
> David Thornton wrote:
> > 
> > raid5 > raid 0=1 ?
> 
> Old rule of thumb was only poor uses RAID5. Software RAID 5 
> does nothing
> but suck, though good hardware RAID controller with at least 
> 32MB NVRAM
> is often faster with raid5 than RAID 0+1. Depends heavily on type of
> disk access.
> 
I like to call this "Proof by cliche".
> > Mirror the stripes better than striping the mirrors ?
> 
> Well, striped mirrors is better in terms of reliability. For example,
> think three 2-way mirrors striped. If one disk fails, there is still 2
> mirrored members on stripe set. Should another disk fail, there is
> probabilty of 4/5 = 80% disk systems survives. OTOH, in case 
> of mirrored
> stripes, there is probability of only 3/5 = 60% disk system survives
> another disk failure.
> 
I se you point. What are the performance implications?
> > bsd better than linux ?
> 
> Matter of taste mostly. One could argue that bsd has a longer history,
> so it's more mature system for server usage. YMMV.
Details..please.
> 
> -- 
>   Eino Tuominen
> 
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