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(Dell) commissioned Principled Technologies (PT) to estimate how many months it would take to recapture initial investment costs when consolidating multiple 4-yearold HP ProLiant DL385 server and storage solutions onto a Dell™ PowerEdge™ R710 server and storage solution using VMware ESX. In this report, we estimate both the number of older solutions each Dell PowerEdge R710 solution can replace and the payback period for replacing those older solutions. We compare the following two solutions: • Intel® Xeon® Processor X5550-based Dell PowerEdge R710 server with 96 GB of memory using VMware ESX and Dell™ EqualLogic™ PS6000XV storage (Dell PowerEdge R710 solution) • AMD Opteron 254-based HP ProLiant DL385 G1 server with 4 GB of memory and HP StorageWorks MSA30 storage (HP ProLiant DL385 solution) KEY FINDINGS • Each Dell PowerEdge R710 solution with VMware® ESX™ can replace seven HP ProLiant DL385 solutions, and could yield a payback in under 18 months. (See Figure 1.) • The Dell PowerEdge R710 solution with VMware ESX delivered seven virtual servers, each of which yielded performance equivalent to or better than the performance of one physical HP ProLiant DL385 solution. (See Figure 4.) • The Dell PowerEdge R710 solution with VMware ESX used little more than 1/5th of the power, about 4/5 of the software costs, and 1/7th of the data center rack space of the seven HP ProLiant DL385 solutions. (See Figures 3 and 7.) Figure 1: A single Intel Xeon Processor X5550-based Dell PowerEdge R710 solution with VMware ESX allows you to consolidate seven AMD Opteron 254-based HP ProLiant DL385 solutions, with an initial investment payback period of under 18 months. We base this estimation on our specific database workload. Our test case modeled a typical enterprise datacenter with multiple legacy HP ProLiant DL385 solutions running high-demand database workloads. The legacy servers each used 4 GB of memory. The enterprise in this test case seeks to consolidate several of these legacy workloads onto Dell PowerEdge R710 solutions using VMware ESX and configured with sufficient processors, memory, and storage to handle these workloads. We used benchmark results from the Dell DVD Store Version 2.0 (DS2) performance benchmark to determine the number of older servers with accompanying storage that a Dell PowerEdge R710 solution could replace. To define the replacement factor, we measured the number of orders per minute (OPM) that the HP ProLiant DL385 solution could perform when running a demanding DS2 workload. We then ran DS2 in virtual machines (VMs) on the Dell PowerEdge R710 solution and measured how many VMs this newer solution could run, while obtaining OPM in each VM equivalent to that of the HP ProLiant DL385 solution. The total number of VMs the Dell PowerEdge R710 solution could handle determines the replacement factor. Based on our specific workload, the replacement factor is seven. Figure 1 depicts this replacement factor for replacing seven AMD Opteron 254based HP ProLiant DL385 solutions with a single Intel Xeon Processor X5550-based Dell PowerEdge R710 solution, as well as the initial investment payback time of under 18 months. Figure 2 graphs the payback period and the cost savings of the Dell PowerEdge R710 solution. Savings continue after the initial investment payback period. By the end of year two, we project a savings of $16,268. The line representing the Dell PowerEdge R710 solution accumulates the initial investment cost and the monthly costs of the solution. The initial investment cost includes the list price of the server and half of the cost of the shared storage, as well as the costs of migrating from the seven HP ProLiant DL385 solutions to the newer Dell PowerEdge R710 solution. The line for the seven HP ProLiant DL385 solutions shows the accumulated monthly costs of seven HP ProLiant DL385 solutions. The lines cross at the end of the payback period. Appendix C describes the payback period calculation. Dell PowerEdge R710 solution can pay back the initial investment in under 18 months $140,000 $120,000 $100,000 $80,000 $60,000 $40,000 $20,000 $0 1 2 3 4 5 6 7 8 9 101112131415161718192021222324252627282930313233343536 Seven HP ProLiant DL385 solutions Dell PowerEdge R710 solution Breakeven at $60,016 in 17.6 months $44,557 initial investment $16,268 savings at 2 years $46,680 savings at 3 years Payback period Initial investment 2nd year savings 3rd year savings Figure 2: The payback period and cumulative estimated costs1 for the seven HP ProLiant DL385 solutions and the Dell PowerEdge R710 solution with VMware ESX. Lower costs and higher savings are better. Costs for the Dell PowerEdge R710 solution include the initial investment of $44,557 plus annual costs of $10,552, for a total year-one and -two cost of $65,660 for the solution. This solution could save approximately $16,268 by year two over the $81,928 two-year costs for the seven HP ProLiant DL385 servers and HP StorageWorks MSA30 storage arrays...