[Linux-cluster] gfs2 v. zfs?
Rafa Grimán
rafagriman at gmail.com
Mon Jan 24 22:26:06 UTC 2011
On Monday 24 January 2011 22:58 Jeff Sturm wrote
> > -----Original Message-----
> > From: linux-cluster-bounces at redhat.com
>
> [mailto:linux-cluster-bounces at redhat.com]
>
> > On Behalf Of Wendy Cheng
> > Subject: Re: [Linux-cluster] gfs2 v. zfs?
> >
> > I would love to get an education here. From usage model point of view,
> > what is the
> > difference between a "parallel file system" and a "cluster file
> > system" ? i.e., when to
> > use a parallel file system and when to use a cluster file system ?
>
> Getting off-topic but I'd also like to hear who uses a parallel
> distributed FS, and what problem space they work well in.
HPC where you need very high bandwidth/throughput to disk (usually scratch
filesystem).
> GFS works fine, but we have trouble scaling it up due solely to the
> limits of central storage. I'm sure there are esoteric storage designs
> to get around this, but at some point I also suspect there's an easier
> way...
>From a HW point of view, DDN has very good storage arrays ... but you pay for
it ;) They promise 6 GB/s and you get those 6 GB/s.
You can also use more storage arrays and use some volume manager to group them
together. This is a bit tricky because it won't guarantee a load balance on
the different storage arrays.
HTH
Rafa
--
"We cannot treat computers as Humans. Computers need love."
Happily using KDE 4.5.4 :)
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