Hi,

In response to Adrian I'm looking for a solution that will work well under RHEL.

Thanks for the suggestions thus far I'll check them out now. Comments below

On 1/16/08, Alex Samad <[EMAIL PROTECTED]> wrote:
> On Wed, Jan 16, 2008 at 05:15:51PM +1100, Joel Heenan wrote:
> > SLUG,
> >
> > We have a requirement in a new project to have a distributed
> > filesystem. Files are written to one of 32 * 200MB volumes and we need
> > to keep them in sync with a DR site. Rsync, I believe, will be just
> > too slow to replicate changes - unless there is some way to make the
> > rsync daemon hook into the kernel and know what changes have been
> > made?
>
> lustre comes to mind ?  you haven't really expanded on how the striping is
> supposed to be done ?

Umm not striping mirroring. Looking at having all the data replicated
out to a DR site so there would be to separate instances.

>
> >
> > RHEL GFS I think will not work across such differences and won't do it
> > asynchronously.
> can you expand on across such differences.
>

Sorry I didn't mean to say differences I meant to say distances. The
DR site is a good 20km away. I have not researched this thoroughly but
it was my understanding that GFS was designed for fibre connected
volumes not over large distances with higher latency.

> >
> > unionfs is I think too experimental.
> >
> > Continous Access, using our SAN to replicate the data, at this point
> > has to be discounted because of licensing.
> >
> > How do other people generally solve this problem?
> >
> > Thanks
> >
> > Joel
> > --
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> >
>
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Thanks

Joel
-- 
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