Re: [Moosefs-users] ask about storage backend for chunk servers

[Anh K. H. <ky...@vi...>]

On Mon, 20 Sep 2010 21:11:43 +0700
Cuong Hoang Bui <bhc...@gm...> wrote:

> I'm wondering about the storage backend for chunk servers. I have 2
> options 1. Using RAID for underly storage backend for chunk servers.
> 2. Not use RAID, Just separate disks attached directly to OS.
> 
> With RAID (maybe RAID 6) option, the solution is very good, but
> take money for RAID card.
> 
> With no RAID, I wonder about tolerance (disk failure). If I have 8
> disks attached directly to OS, for example I mount
> as /mnt/sdb, /mnt/sdc,.., .mnt/sdh. If one of them failed, what
> happens to data, also operations that's performing on this disk.
> Please give me some advice.

IMHO things depend on your "goal". If your goal is 2 or more, RAID isn't necessary (here the term "distributed"). As recommended from MFS docs, you should use RAID for mfsmaster/logger.

-- 
Anh Ky Huynh