On Wed, Jun 3, 2009 at 11:15 AM, Roland Dobbins<rdobb...@arbor.net> wrote: > Active/passive is an obsolete 35-year-old mainframe paradigm, and it > deserves to die the death. With modern technology, there's just really no > excuse not to go active/active, IMHO.
Roland, Sometimes you're limited by the need to use applications which aren't capable of running on more than one server at a time. In other cases, its obscenely expensive to run an application on more than one server at a time. Nor is the split-brain problem in active/active systems a trivial one. There are still reasons for using active/passive configurations, but be advised that active/active solutions have a noticeably better success rate than active/passive ones. Regards, Bill Herrin -- William D. Herrin ................ her...@dirtside.com b...@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
