[Dovecot] RAID1+md concat+XFS as mailstorage

[Костырев Александр Алексеевич]

>Note that you wouldn't get anything back from a similar fail of a RAID10 array either
I wasn't aware of it, that's interesting.

>(unless we are talking temporary removal and re-insertion?)
nope, I'm talking about complete pair's crash when two disks die.
I do understand that's the possibility of such outcome (when two disks in the same pair crash) is not high, but
when we have 12 or 24 disks in storage...





-----Original Message-----
From: dovecot-bounces at dovecot.org [mailto:dovecot-bounces at dovecot.org] On Behalf Of Ed W
Sent: Thursday, June 28, 2012 11:15 PM
To: dovecot at dovecot.org
Subject: Re: [Dovecot] RAID1+md concat+XFS as mailstorage

On 28/06/2012 13:01, Костырев Александр Алексеевич wrote:
> Hello!
>
> somewhere in maillist I've seen RAID1+md concat+XFS being promoted as mailstorage.
> Does anybody in here actually use this setup?
>
> I've decided to give it a try,
> but ended up with not being able to recover any data off survived pairs from linear array when _the_first of raid1 pairs got down.
>

This is the configuration endorsed by Stan Hoeppner.  His description of 
the benefits is quite compelling, but real world feedback is interesting 
to achieve.

Note that you wouldn't get anything back from a similar fail of a RAID10 
array either (unless we are talking temporary removal and re-insertion?)

Ed W