[CentOS] Switching To Raid1

Wed Jan 9 18:04:47 UTC 2008
Dan Carl <danc at bluestarshows.com>


> -----Original Message-----
> From: centos-bounces at centos.org [mailto:centos-bounces at centos.org]On
> Behalf Of Matt
> Sent: Wednesday, January 09, 2008 10:55 AM
> To: CentOS mailing list
> Subject: [CentOS] Switching To Raid1
>
>
> I have this ASUS M2NBP-VM motherboard http://tinyurl.com/3xby3h
> running CentOS 4.4 as a web/email server.  It has a 500Gb SATA2 drive
> with about 32Gb in use.
>
> The motherboard supports hardware raid.  Is there a way to switch to
> RAID1 without reinstalling or loosing any data?
>
> Also, if I am running raid how do I know if there is a failure on one
> of the drives anyway?  Is hardware RAID1 a good idea?
>
> Matt

Like most here, I would suggest going the software Raid route.
The performance is about the same
As I learned earlier this week you can move a software raid to another
system of even distro.
It totally independent from the server hardware.
To create a Raid just google "mdadm software raid" and you get lots of
information.
As far as monitoring:
Smartmontools will email you when a drive fails or is about to.
Look at /etc/smartd.conf for details.
Just remember Raid is not a replacement for a good backup plan it just
provides fault tolerance.

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