The 3 drives as a Raid is probably set up to have on as a hot spare. A four
drive Raid 1 is not really a Raid 1 it is either a Raid 01 or more likely a
Raid 10. In a Raid 01 you stripe a pair of drives and then mirror the
striped drives. The more common configuration is to create two mirror sets
and then stripe them. This gives you fault tolerance with high though put.



On 7/21/07, JT Moree <moreejt@pcxperience.com> wrote:
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Randy Melder wrote:
> > If a Linux RAID 1 set is created with 3 drives, is it the same volume
> > mirrored on all three drives? If not, how does RAID 1 work with more
> > than 2 drives?
>
> we have 4 drives in a raid 1 array on our server.  It is the /boot
> partition for the system that is being duplicated across all 4 drives.
>
> - --
> JT Morée
> PC Xperience, Inc.
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.2.2 (GNU/Linux)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
>
> iD8DBQFGoh9r1JwGi/ukQqERAhCNAJwJz5yP6f+kwUD7Vs8FJX70nRlhAgCdG/ur
> vhC6jBIf3gMUuWVA2MVVLM0=
> =nzTb
> -----END PGP SIGNATURE-----
>
> --
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.
> MailScanner thanks transtec Computers for their support.
>
> ---------------------------------------------------
> PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us
> To subscribe, unsubscribe, or to change your mail settings:
> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss
>