Appendix A. Return On Investment; Test Case; Consolidation Factor - Dell PowerEdge R810 Manual
With intel xeon processor l7555 database consolidation
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Appendix A. Return on investment
Test case
Consolidation factor
Servers: Database consolidation on Dell PowerEdge R810 servers
This section estimates the return on investment and expected
payback period for a hypothetical enterprise that plans to
consolidate SQL Server databases from multiple legacy servers and
storage solutions onto a single newer, more powerful Dell server-
and-storage solution.
The payback period is an estimate of how many months it would
take to recapture initial investment costs when consolidating
multiple 4-year-old HP ProLiant DL385 solutions onto a single Dell
PowerEdge R810 solution.
The ROI analysis projects costs over 3 years for both the legacy
and newer solution and calculates the ratio of the acquisition costs
of the newer solution to the 3-year costs savings.
We consider the following specific legacy environment running
Microsoft SQL Server 2000 on Microsoft Windows Server 2003 R2
with Service Pack 2:
Twenty four AMD Opteron 254-based HP ProLiant DL385
servers with 4 GB of memory and 12 HP StorageWorks
MSA30 storage enclosures
We calculate the cost savings for a migration to the following Dell
solution running Microsoft SQL Server 2008 R2 on Microsoft
Windows Server 2008 R2:
One Dell PowerEdge R810 with four Intel Xeon Processor
L7555s and 128 GB of memory and two Dell EqualLogic
PS5000XV storage arrays
We used benchmark results from our DS2 testing to determine the
number of older servers with accompanying storage that a Dell
PowerEdge R810 solution could replace. Our results showed that an
enterprise could replace 24 HP ProLiant DL385 solutions with a
single Dell PowerEdge R810 solution. We use 24 as our
consolidation factor. In our tests, the HP Proliant DL385 solution
used half of the HP StorageWorks MSA30 enclosure. We therefore
assume that two HP ProLiant DL385 servers can share each HP
storage array for a total of 24 HP ProLiant DL385 servers and 12
HP StorageWorks MSA30 enclosures.
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