hardware recommendations for MURDER?

[Vincent Fox]

So lt looks like we are migrating our University to a murder setup. We are 
about 50,000+ users, with currently a number of mailstores (UWash) and 
users directly addressing them.

We are looking towards adding new hardware for an MUPDATE box and some 
frontends. Anyone have recommendations on these? Sparc/Solaris versus 
X86/Linux? single-CPU versus duals? storage?

I poked around in the mailing lists, didn't find anything really current. 
And we all know how our users email usage has gone up in the last couple 
of years.

By the way the link from the main Cyrus web page to the mail archives 
isn't right. E.g. http://asg.web.cmu.edu/bb/archive.info-cyrus