I'm probably just stating the obvious here (is to me anyway), but we certainly keep spare equipment at a different location such that -- worst cases -- equipment blows up, flames out, gets stolen, etc., that we'll be back in business ASAP. Your ARC, a chassis (find yourself a dual 45A...many of us have "spares" up the wazoo) and perhaps a spare DSP & NMC to go with that extra ARC. I know how easy it is to become enamored with the more geekly aspects of ...anything..., including redundancy, but this is more in the "common sense and protections" zone to consider. A lot of these really groovy and expensive failover types of things don't work so good when a whole box gets fried by lightening, stolen, etc., etc--which are more highly probable and destructive than having a 2nd ARC pick up after a failing one next to it. KISS--90% solutions, covering your bases, probabilities, aren't as exciting (or expensive). Just boring good business practice. Scott Trautman President/Owner www.gdinet.com Global Dialog Internet 608-240-4638,7fax 2049 Skaalen Road Stoughton WI 53589 Internet Service across Southern Wisconsin