>>Hello, >>I'm looking to build a CentOS server (or servers) with a >>SAN to support a large user base. >> >> > >The storage solution will depend heavily on the topology. > >All servers in same closet (same 25'): > Serial Attached SCSI (SAS) > >All servers within the same building: > Storage over TCP/IP (iSCSI) or > Fibre-Channel Arbitrated-Loop (FC-AL) > >Furthermore, I need to know ... >- Your apps >- Your clients >- Other uses of the storage you can think of > > Mail (POP/IMAP/Webmail), that's it. 50K to 100K users. Client is not happy with his current vendor. All the servers would be in the same building, likely in the same cabinet or adjacent cabinets. > > >>Question: if you had a budget of $25K (or more if >>necessary), what you build? >> >> > >I apologize for this, but I'd feel I'd be professionally >negligent if I didn't at least point it out. If you have >$25K to spend, and can afford recurring costs of $1-2K/year, >then I'd highly recommend RHEL AS for the support aspects. > I'll ask the client to consider that. Thanks.