[Beowulf] hardware RAID versus mdadm versus LVM-striping

Rahul Nabar rpnabar at gmail.com
Sun Jan 17 22:55:57 EST 2010


Thanks Tony for the helpful tips!

On Sun, Jan 17, 2010 at 5:08 PM, Tony Travis <a.travis at abdn.ac.uk> wrote:
>
> However, I would avoid relying on LVM mirroring for data protection. It is
> much safer to stripe a set of RAID1's using LVM. I don't think LVM is useful
> unless you are managing a disk farm. The commonest issue in disk perfomance
> is decoupling seeks between different spindles, so I put the system files on
> a different RAID1-set to /export (or /home) filesystems.

My problem is that I have several different "storage boxes" each
running on RAID5. But I use LVM to aggregate this storage. While doing
this I noticed that LVM offers striping too. THat's what got me
thinking....


-- 
Rahul
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