Rudi Ahlers wrote:
http://www.openfiler.com/products
For me I would just buy a real storage array, better reliability generally. Though entry level pricing is around $20k.
2x machines to give a network RAID setup. What would you recommend using? The idea is to serve to servers which will be clustered as well, hosting web hosting Virtual Private Servers.
openfiler(above from my original email) supports clustering in some form I believe.
I honestly wouldn't trust any such solution myself, if I'm going the cheap route then I would just have 2 of the systems and back up the data to the 2nd one on a routine basis. Clustering is a very in depth, fragile, complex thing to get right, and if not done very very well can cause much more problems than it helps prevent.
nate