Hi, > The type of clustering you're referring to isn't possible out of the box > with Exchange. Check out http://us.neverfailgroup.com/products/NFFE.asp. > That's just one example of how this can be done, I believe there are other > products that do similar things. In the Microsoft tech docs I have been reading regarding clustered Exchange, e.g. http://www.microsoft.com/technet/prodtechnol/exchange/guides/E2k3HighAvGuide/f68057dd-ccda-47f0-be5e-4090d39456b8.mspx can the "Shared Disk" be a SAN disk? Or does it have to be a SCSI shared array? It is not clear from the article. Just wondered if anyone has actually set this up using SAN or network drives? best regards Mike