Re: SBS 2003 Partition Questions
From: Dave Nickason [SBS MVP] (gwdibble_at_NOSPAM.frontiernet.net)
Date: 12/14/04
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Date: Tue, 14 Dec 2004 18:06:11 -0500
I still suggest Raid 5 and a hot spare.
I've only used 1 and 5, so Raid 10 is out of my experience. Off the top of
my head, I'd guess it's overkill, but you may want to consult with someone
more knowledgable than I am. If you call Dell and ask for a server sales
specialist (not support), you'll probably get a better answer.
I don't think Allen was referring to Raid 10, though. He was recommending 2
separate Raid arrays - a 2-disk mirror for the OS, and a Raid 5 for the
data. That's an OK idea since the OS can work separately from data access,
providing a performance boost (if the arrays are on separate controller
channels). I'm pretty sure Raid 10 is a mirror of two Raid 5 arrays, which
would provide more redundancy tha a single Raid 5 since a whole controller
(or channel) could fail, you could survive 2 simultaneous disk failures,
etc. While more redundancy is always better, I'm not sure of the
cost/benefit ratio of a Raid 10. I'd have to see a pretty clear reason to
justify what seems to me an incredibly costly option.
"thomaslally" <juste_ciel@hotmail.com> wrote in message
news:1103049022.645767.144770@f14g2000cwb.googlegroups.com...
> Dave, I have 3 PE 2800 (2 * 3.6 Xeon - 4GB RAM) with 2 * 4 disks and a
> powervault (7 disks so far) the Dell Silver support technician was not
> very familiar with RAID 10. But according to what he said, a RAID 5
> array will be as fast as most RAID 10 on lower budget machines. Safety
> is my primary concern. What would you suggest:
> 1) RAID 5 + hot spare
>
> or
>
> 2) RAID 10 without hot spare
>
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