Re: Advice on raid/lvm

[Mark Allums <mark@allums.com>]

Kelly Harding wrote:
> Hi,
>
> My server has got debian on it currently in the following configuration:
>
> 250Gb boot drive with partitions for / /boot /home
> 3x500Gb drives in RAID5 array, with XFS on top directly.
>
> Aiming to get a couple of 1Tb drives to migrate the 3x500Gb RAID5
> array to a RAID1 and use two of the 500Gb drives for thhe new boot
> drive with LVM (With /boot / /home and so on on it).
>
> Just wondering if theres any suggestions on how best to go about
> migrating like this? not really worried too much about downtime, as
> long as data is preserved. Reasons are mostly because the 250Gb drive
> I believe could be getting close to failure (have backed up important
> data on it to another machine using xfsdump).
>
> Any suggestions gratefully recieved.
>
> Thanks,
>
> Kelly

Not really answering your question directly, but may I suggest, if cost 
is not *absolutely* critical, that you consider RAID 10?  If it is a 
server, then certainly you will want to get away from a three-drive RAID 
5.  A RAID 10 is a good compromise between redundancy, speed, and cost. 
 It just takes four drives instead of three (or two.)

Mark Allums