PowerVault 775N + NFS3

John Deatherage john at dtiserv2.com
Thu Nov 7 17:32:00 CST 2002

I meant push 1 gigabit, on a gigabit ethernet internet connection, my bad..

I don't have exact stats, but last time I checked, one of our larger
load-balanced websites pushed over 6 Tbytes a day.  About 8 hours of our day
is near full cap., and the rest is 30-40%.

We're also looking at 2650s as NFS servers as an alternate solution.  In a
perfect world, network appliances should provide a predetermined amount of
performance, but in the case of NFS, we could probably always do better with
something we can tweak more.

Storage vendors can't seem to give me any concrete NFS performance stats
unless they are charging outrageous SAN prices for their NAS.   This leads
me to believe that we should give NFS on Linux a try here - if can be done,
we can do it...


> -----Original Message-----
> From: linux-poweredge-admin at dell.com
> [mailto:linux-poweredge-admin at dell.com]On Behalf Of jason andrade
> Sent: Thursday, November 07, 2002 2:29 PM
> To: John Deatherage
> Cc: linux-poweredge at dell.com
> Subject: Re: PowerVault 775N + NFS3
> On Thu, 7 Nov 2002, John Deatherage wrote:
> > Has anyone on the list used the PowerVault 775N with NFS yet?  We were
> > thinking about buying one of these units with a 220S enclosure
> and 10 73GB
> > drives.
> did you look at the 775 because you specifically wanted an appliance NFS
> server rather than a unix server doing NFS ?  otherwise it might
> be worthwile
> to look at a 2650 or a 4600 also.
> > We are looking into NAS over our current SAN + fiber channel
> HBA in every
> > machine.  We are only doing web hosting, but will need to push
> 1 gigabyte or
> > so of NFS off the two copper gig NICs.
> 1 gigabyte in what time frame ? per second ? per day ? or 1
> gigabyte of disk space?
> we are currently pushing between 1 and 1.5 Tbytes a day across Linux NFS
> using copper Int*l gigE nics, with a D*ll fileserver running
> R*dH*t Linux [1]
> > I'm getting more specs from my sales rep, but any Linux experience that
> > anyone can provide is appreciated.
> it has taken us about 2 years to get to a point where NFS under
> Linux appears to
> be running reasonably.  it will work out of the box but if you
> are not in a position
> to debug and patch your the NFS codebase (we aren't) you will
> need to be quite
> careful in setting it up, tuning and testing it out before you
> move away from a
> SAN model.
> we originally specced our servers with a view towards setting up
> a SAN, but the NAS
> model has proven to be more orientated with our business requirements.
> regards,
> -jason
> [1] While we use products from all these companies, we get little
> or no corporate
>     support from them - though individuals responses have been
> above and beyond
>     the call..  - the joys of being in Australia where the Linux
> installation base
>     is just too small to care about, perhaps :-)
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