I'm aware of at least two Virtua libraries currently using VuFind: USQ (http://library.usq.edu.au/) and the National Library of Ireland (http://catalogue.nli.ie/). VuFind is currently bundled with a copy of USQ's Virtua driver, so it should be possible to get things up and running with minimal code changes, assuming your Virtua instance is reasonably similar to USQ's.
If you want to get more information, I'd recommend posting to the vufind-general mailing list (https://lists.sourceforge.net/lists/listinfo/vufind-general). The National Library of Ireland team is pretty active there, so you should be able to get some details on their experience if you ask.
> -----Original Message-----
> From: Code for Libraries [mailto:[log in to unmask]] On Behalf Of
> Nathan Tallman
> Sent: Tuesday, June 21, 2011 11:25 AM
> To: [log in to unmask]
> Subject: Re: [CODE4LIB] OIA Feeds
> Thank you everyone for your replies.
> Right now, I'm just exploring the options for a potential project. We
> to make our MARC records available as Dublin Core via OAI-PMH. We don't
> a digital repository or similar infrastructure at the moment, so I'll
> take a
> look at the OAI Static Repository documentation.
> I'd really like to upgrade our catalog to something like VuFind (no
> about maintaining a static repository any more), but I haven't had time
> explore hooking VuFind into our existing Virtua database. It'd probably
> more efficient to just figure out and implement VuFind because of the
> of other benefits.
> Thanks again. If anyone's using VuFind as a discovery interface to a
> backend, let me know!
> On Tue, Jun 21, 2011 at 9:50 AM, Nathan Tallman <[log in to unmask]>
> > Greetings list,
> > Can anyone direct me towards documentation on creating an OAI feed
> > scratch, without a repository infrastructure?
> > Many thanks!
> > Nathan Tallman
> > Associate Archivist
> > American Jewish Archives