NAS or RAID

Joseph Kubik josephkubik-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org
Wed Aug 17 16:34:46 UTC 2005


One interesting thing to note about NAS vs Local storage. There are
actually situations where NAS is faster than local storage, because
the server can be a cheap server but still have fast IO compared to a
laptop, or an older workstation with slow drives.

Personally, if I were setting something like this up, I'd do SATA raid
with linux as a nas server and place in on a dedicated UPS, and NEVER
do anything else to it as a server.
-Joseph-

On 8/17/05, Lennart Sorensen <lsorense-1wCw9BSqJbv44Nm34jS7GywD8/FfD2ys at public.gmane.org> wrote:
> On Tue, Aug 16, 2005 at 07:09:01PM -0400, Fraser Campbell wrote:
> > Pretty much depends on what you want it for:
> >
> > - if money is no object SAN might work
> > - NAS can be quite inexpensive but NFS seemed a bit slow in Linux
> >   (probably improved now in 2.6 kernel)
> > - direct attached storage can be big, fast, cheap and good but
> >   limited space if you're trying to fit it in typical server case
> >
> > If you care about availability then definitely make sure whatever
> > solution you choose is RAIDed.
> >
> > For internal storage I've heard good reviews on 3ware RAID controllers,
> > last time I looked they had controllers that supported up to 12 IDE
> > disks in whichever RAID configuration you wanted, that's serious storage
> > with 500GB disks available these days!
> >
> > For direct attached storage in addition to internal drives you can look
> > at USB, SCSI, firewire, SATA and (no doubt) other types of enclosures.
> 
> Of course some people have been saying good things about areca
> controllers lately.  They have some with 24 SATA ports on them, and also
> have drivers for linux (open source and all).  I believe I read
> somewhere that their drivers will be included in the kernel sometime
> soonish.
> 
> THey suppsedly also cost less than a 3ware.  Some benchmarks show them
> as slower than a 3ware, other benchmarks show the reverse.  Who knows.
> 
> Lennart Sorensen
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