Realize significant savings through reduced server hardware expense, reduced power and cooling expense, and reduced management overhead. Results are calculated for three-year and five-year analysis on the calculator below.
1 Offload percentage for SSL alone is estimated at 30%; compression offload, 20%; TCP Managment, 66%; cumulative 80%; we use a minimum of 40% cumulative
2 Gartnerís Worldwide Server Forecast, 2002-2014 suggesting the percentage growth of server purchases will be 5% year-over-year; your growth may vary.
3 This depends significantly on the your specific configuration and pricing; sample ranges were anywhere from $5000usd to $50,000usd; hosted solutions may vary.
4 http://www.energystar.gov/ia/partners/product_specs/program_reqs/computer_server_prog_req.pdf provides some base guidlines on maximum idle power consumption, however, as demonstrated, real power consumption is dictated by specific configuration, load and conversion factor; we used minimal 150W ratings, however real enterprise server consumption is bound to be much greater.
5 http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html provides average samplings for calculation purposes, however actual costs are much better; we've used the estimated 2009 commercial average.
6 Methods for calculating management costs/server vary greatly; we use a minimum of 1 hour/month/server @ $24usd/hour.
7 We use a baseline of a small shop (125 servers) with a $40,000usd ADC solution; medium (500 servers) @ $120,000usd; and large (1000 servers) @ $200,000usd; actual cost depends on model, configuration and need.