Raid-5+spare or Raid-10?

[Steve Wechsler]

If you're looking for speed, choose RAID 10, but with that solution you can
only withstand the loss of certain combinations of two drives. Speaking from
a reliability standpoint, I'd only consider that being able to withstand the
loss of a single drive. Not that that's a bad thing, the odds of more than
one drive failing simultaneously are pretty low. Just keep an extra 80 GB
drive on hand and offline, they're cheap.

Steve

> -----Original Message-----
> From: fedora-list-admin at redhat.com
> [mailto:fedora-list-admin at redhat.com]On Behalf Of Peter Kiem
> Sent: Friday, December 12, 2003 5:22 AM
> To: fedora-list at redhat.com
> Subject: Raid-5+spare or Raid-10?
>
>
> Previously I've used software raid-1 for my RH7.x servers and it has
> worked extremely well.
>
> For this new server I am purchasing however I decided to get a 3ware
> 7506-4LP raid card and 4x80GB drives.  The server will do general things
> like email, web, ftp, dns, etc.
>
> I'm going to try to install FC1 on it to see if the hardware is
> compatible but will probably end up with RHEL for production use.
>
> With 4 drives, I can either do raid-5 with a hotspare or raid-10.  Both
> will give me 160GB of space and theoretically can withstand the loss of
> 2 drives.
>
> Any suggestions as to which raid array type to choose?
>
> --
> Regards,
> +-----------------------------+---------------------------------+
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