One of the key issues in IT today is that normal operating expenses consume way too much of the annual budget – 61% on average in most organizations is spent keeping the lights on, and 25% spent on regular migrations and upgrades. That leaves a scant 14% on average for innovative investments that can give the business a true game changing competitive edge.
To help address the lack of innovation spending, server virtualization is being considered and implemented in data centers as one means to drive “keeping the lights on” costs lower, so as to provide more budget to innovation.
The OpportunityData center servers are notoriously under-utilized. Most servers do not come close to peak operating capacity on any given day. In fact, according to Gartner’s white paper on Data Center Power and Cooling Scenario Options for the World Ahead, April 2007 during a 24 hour period less than 10% of the typical x86 /x64 server computing capacity is used.
Server virtualization tackles this issue by abstracting the application / operating system sets from the physical systems providing for more than one set to be run on each physical system. As current systems are underutilized and difficult to reallocate based on demand, virtualization lets the IT team place more work quickly and appropriately on less physical servers – optimizing usage and minimizing the amount of physical assets to manage and support.
By decoupling the physical hardware from the operating system and applications, virtualization allows you to consolidate servers, improve utilization and improve manageability. This can yield significant cost savings and benefits including:
1. Reducing server, storage and networking costs
2. Reducing growing power / cooling / facilities costs\
3. Improving IT productivity
4. Reducing business risks
5. Improving business agility
How expensive is a data center server? Here are a few typical server costs to consider:
1. On average a 2 x CPU server costs $4,000 per year in three-year amortized hardware purchase, and annual support and maintenance contract costs.
2. Each server has additional amortized costs of more than $1100 per year for storage and networking costs.
3. Server provisioning for new and lifecycle replacement servers consumes 20 hours /server, an average of $333 per server per year based on normal three year replacement cycles and normal 10% server growth. If your environment is more dynamic and growing faster, your costs can be significantly higher.
4. On-going server administration drives $2,720 in labor costs per server per year, with an average of 40 servers per FTE. The tasks that can be reduced include on-going moves, add and change management, problem and incident management, monitoring, performance and availability management, asset management, security management, patch and upgrade management, demand management, backup and recovery, restores, storage management, disaster planning, compliance management/reporting, vendor and contracts management, chargeback, and financial/budget management.
5. Power, cooling and data center space issues are gorwing. Today, constructing a new data center costs an estimated $400 to $1,000 per sq ft. {1,2} For powering and cooling a server, IDC estimates $0.50 for each $1 in server capital spending, increasing to $0.70 by 2010 [2]. Crunching the numbers, a typical 2 CPU server consumes $589 in annual power and cooling costs per year, and $310 in amortized data center build-out and space costs.
6. As companies worldwide become more environmentally conscious, carbon emissions costs supersede the annual power costs as a growing data center issue. And savings from server virtualization can have a significant environmental impact, because taking 100 x 2 CPU servers out of the data center via virtualization is equivalent to taking 122 cars off the road.[4]
In total, each 2 CPU server averages $9,000 per year in total direct ownership costs, a significant opportunity for potential savings.
The Business Case for Server VirtualizationAlinean estimates that implementing server virtualization can address this rising cost of ownership issue by:
1. Consolidating server workloads typically in the range of 8:1 to 15:1, resulting in:
a. A reallocation or retirement of existing servers and elimination of on-going server maintenance and support costs
b. Avoidance of adding any / as many servers in future to support growth
c. Elimination of not only the server, but related storage and networking costs for host bus adapters, network interface cards and storage / network switch infrastructure
d. Reduction in growing power and data center space issues
2. Reducing server provisioning to 1.5 hours / server with virtual environment (92%+)
3. Reducing server administration workload from 60% to 90%
As well as the direct savings, server virtualization can provide additional benefits including driving business resilience including reducing DR recovery time / risks and improving availability by 80%
The Bottom-LineExamining a typical 100 2 x CPU server virtualization, we tally the following potential benefits (using VMware VI3 pricing):
1. Consolidate to 7 x 4 CPU virtualized servers (net 93 server savings), a 14.3 to 1 consolidation ratio.
2. Deliver $575,000+ in average net TCO savings per year
3. $1.38M in net present value (NPV) savings over 3 years (with a 10% discount rate)
4. Deliver payback on investment of 5 months with a $217,000 initial investment
5. Drive a 670%+ Return on Investment (ROI)
Examining server virtualization projects in general we find that the benefits are significant:
1. On average, generates double the ROI of other comparable IT infrastructure projects, 400 to 800% risk adjusted ROIs vs. 200-400% for most infrastructure projects
2. Delivers payback on investment of less than 8 months, compared to most IT infrastructure projects which take 10 to 16 months to reach breakeven
3. Reduces net TCO by >30%, where most infrastructure IT projects deliver only 5% to 15%
4. Delivers significantly higher availability and agility up-side benefits than projected up-front.
Overall server virtualization is a low risk, high reward project that any significant data center should consider today. It can be performed in stages easily, whereby “virtualizing” specific data center areas and application / OS sets can be performed – using the progressive savings on successful virtualization projects to pay for subsequent deployments.
For a personal quantification as to the potential value of server virtualization, visit:
http://www.vmware.com/go/calculator[1] Anthes, Gary, “Data Centers Get a Makeover”, Computerworld news article, published November 1, 2005.
http://www.computerworld.com/databasetopics/data/datacenter/story/0,10801,97021,00.html?SKC=home97021
[2] IDC Enterprise Class Virtualization 2.0 #DR2007_5MEW, Feb 2007
[3] 2 CPU server = 2U, each rack can support 24 U space net, 7 sq feet per rack in net space including overhead space
$310 in net lease and build-out amortized costs per year per sq ft. based on $1,200 in build out and $1,500 in electrical power and cooling equipment cap ex, amortized over a 5-year period.
[4] Shulz, Gary, “Storage Power and Cooling Issues Heat Up”, May 21, 2007
http://www.enterprisestorageforum.com/ - the U.S. national average CO2 emission for electrical power is 1.341lbs per kWh. , for comparison, a typical gallon of gasoline (octane level will vary) will on average generate about 20 lbs of CO2. A typical car over an annual operating period is estimated to produce about 12,000 lbs of CO2 emissions per year (600 gallons of fuel per year, 12,000 miles / 20 mpg)