Dell R810 - Manual (Page 33)

Servers: Database consolidation on Dell PowerEdge R810 servers
33

The enterprise saved the cost of the freed up software
assurance agreements. These agreements were due for
renewal at the time of the solution acquisition.

The enterprise purchased a SQL Server 2008 R2 Enterprise
Edition per server license for the Dell PowerEdge R810
solution and software assurance agreement for that
software.

The enterprise already owned the necessary Client Access
Licenses (CALs).
We made the following assumptions in estimating facility costs,
which include rack-based space costs and Ethernet port costs:

We estimated a fixed data center cost per rack, prorated by
the percentage of the rack the solution used. We estimated
an annual per server data center ports cost of $159 based
on PT experience.
We made the following assumptions in estimating energy costs:

We measured energy costs for active and idle power
consumption values and used the average of the active and
idle power from the benchmark runs to calculate year-round
power.

Average cost per kWh of power. Source: National
commercial average for December 2009 from
http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_a.h
tml
. The December 2009 average was $0.973 per kWh.

We estimated the energy cost of cooling the servers and
storage arrays to be equal to the energy cost required for
running the systems.
We used the following assumptions in estimating the management
costs:

Support costs are separate from administration costs and
are included under 3-year support, maintenance, and
service contract costs for newer hardware.