"Fresh light on mainframe total cost of ownership reveals Big
Blue's big iron is cheaper than a roomful of servers. Research
house Illuminata's report, 'IBM System z TCO: Man Bites Dog' shows
that running 10-50 applications on a mainframe costs less than
running the same workload on a one server/one application basis
where the servers run Linux or Solaris.
"The report, written by Illuminata analyst Wayne Kernochan,
(based on data supplied by IBM) states 'it no longer makes sense
for the large enterprise to measure TCO strictly on a
one-application-per-server basis.' It compared multi-application
workloads running on one mainframe versus a bunch of blade servers
or a set of 50 distributed servers..."