[lug] NAS - OpenNAS, FreeNAS, NAS4Free, or COTS?

Quentin Hartman qhartman at gmail.com
Mon Dec 8 13:16:50 MST 2014


The best way to avoid multiple disk failure is to get your disks from
multiple vendors and/or manufacturers. That should make sure you don't get
disks that were all "born" at the same time and share a common subtle flaw.

On Mon, Dec 8, 2014 at 11:52 AM, Orion Poplawski <orion at cora.nwra.com>
wrote:

> On 12/08/2014 11:44 AM, Quentin Hartman wrote:
> > I have to just put in a plug for a Synology device. They are pretty well
> > bullet proof and super easy to maintain. If you need to do anything
> weird they
> > are linux based, but out of the box they are very capable. They are more
> > expensive up front than rolling your own, but inexpensive enough that the
> > difference is more than made up for by the time savings in most cases. I
> have
> > a couple at the office, and use one for general NAS / file sharing
> stuff, and
> > the other as a backup destination. They are great.
>
> good to know, thanks.
>
> > also re RAID-5, in my experience, most of the problems with RAID-5 are
> largely
> > theoretical, until you get up to raid sets with about 10 disks or more.
> I've
> > never had problems with sets smaller than that, in terms performance,
> > reliability, or recovery time. If budget is a concern, and you are using
> a 4-5
> > disk array, RAID-5 with a single hot spare (or even without if the data
> is
> > reconstruct-able and an array failure would be annoying but not
> catastrophic)
> >  makes a lot of sense in my opinion.
> >
>
> Well, I recently lost a 6-disk RAID5 array of 2TB disks due to multiple
> disk
> failures.  Admittedly, it was compounded by SMART checks having been turned
> off accidentally, but it is quite possible for it to happen.  I also lost a
> RAID10 array to double disk failure.
>
>
> --
> Orion Poplawski
> Technical Manager                     303-415-9701 x222
> NWRA, Boulder/CoRA Office             FAX: 303-415-9702
> 3380 Mitchell Lane                       orion at nwra.com
> Boulder, CO 80301                   http://www.nwra.com
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