[Dovecot] RAID1+md concat+XFS as mailstorage

[Charles Marcus]

On 2012-07-01 3:17 AM, Stan Hoeppner <stan at hardwarefreak.com> wrote:
> In a production environment, the mirror pairs will be duplexed across
> two SAS/SATA controllers.
>
> Duplexing the mirrors makes a concat/RAID1, and a properly configured
> RAID10, inherently more reliable than RAID5 or RAID6, which simply can't
> be protected against controller failure.

Stan, am I correct that this - dual/redundant controllers - is the 
reason that a real SAN is more reliable than just running local storage 
on a mod-high end server?

-- 

Best regards,

Charles