Home NAS recommendations?

[Giles Orr]

On 1 February 2010 18:08, William Muriithi <william.muriithi-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> wrote:
> On 1 February 2010 11:41, Giles Orr <gilesorr-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> wrote:
>> I'm looking for a home NAS - essentially I want a glorified hard drive
>> enclosure that has a RJ-45 port on it.  Unfortunately, I think that my
>> ideal unit doesn't exist, but I thought I'd ask.  I'd like it to hold
>> a single hard drive: dual HDs would mean higher reliability (assuming
>> RAID 0) but also higher cost, higher power consumption, probably more
>> noise ... and I don't need the extra reliability.  Here's where it
>
> Just be careful with RAID 0. It does not offer any reliability
> benefit. In fact, if you look at it mathematically, it actually make
> the system less reliable. What I mean by this is, the more hard disk
> space you have, the probability of having bad sectors increases. Since
> that failure can make data in both hard disk unusable, one can deduce
> that such a system is worse off than with a single hard disk. That
> explain why ext4 has been deemed insufficient, considering the size of
> current drives. And that is why btrfs seem to be the only way forward
> for OSS.  Even xfs was not designed to sit on large low quality
> drives.
>
> My guess is, you meant to mean RAID 1. Your data is store in two
> places, so you are  better off. RAID 1 do not however negate the need
> for btrfs. Think about it. If data is corrupted because one drive is
> failing, how can you tell which of the two drives have the clean data?
> I think thats where btrfs will help.

You're correct: I meant RAID 1.  I know the difference, but I often
forget which is 0 and which is 1 ... next time I'll look it up
_before_ I post instead of after.  Sorry.

-- 
Giles
http://www.gilesorr.com/
gilesorr-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org
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