On Fri, Oct 31, 2008 at 4:58 AM, Per Jessen <per@opensuse.org> wrote:
Greg Freemyer wrote:
On Thu, Oct 30, 2008 at 8:02 AM, Per Jessen <per@opensuse.org> wrote:
Greg Freemyer wrote:
All,
I'm conceptually putting together a NFS server in my head. (I will build it once I know what it is!!)
What I want is something flexible.
ie. Have it start with 3 or 4 drives, then add a drive when I need the capacity. Remove a drive when I don't. replace the drives with bigger drives as the become available. All without losing my data. (Or having to back it up / restore it.)
My first thought - LVM.
I'm very familiar with LVM. It does not really do the same things as RAID. Not even if you only worry about the performance side of things. ie. a 4 disk raid system is faster than a single disk for most raid setups. With LVM based on 4-drives, it is typically just the same speed as a single disk.
Completely agree, but I read your requirements above to be more to do with space management than performance.
This is linux!! I want functionality and speed!! Seriously, I am very intrigued by the QNAP TS-509 NAS. Its Ubuntu based, but it seems to give the user full ssh access. It does automatic online Raid Expansion and Raid Migration. I don't know if they are using mdadm --grow to do it, or if they have custom code. Per a review I read, you can even hook up a monitor/keyboard and login. (The review is really good and is at http://www.smallnetbuilder.com). They use cookies, so I can't post a direct link. Greg -- Greg Freemyer Litigation Triage Solutions Specialist http://www.linkedin.com/in/gregfreemyer First 99 Days Litigation White Paper - http://www.norcrossgroup.com/forms/whitepapers/99%20Days%20whitepaper.pdf The Norcross Group The Intersection of Evidence & Technology http://www.norcrossgroup.com -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org