Cost Benefit analysis of virtualization of servers for a company.

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 cost Benefit analysis of virtualization of servers for a company. 

  • 3 years ago
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3-3SpreadsheetExampleInNotes.xlsx

Variables

Variables used in the spreadsheets
value variable name comment
current 20 currNumServers current number of servers (physical)
300 currServerMaintenance current server maintenance contract cost/year/server
1.03 year4SMIncrease increase in server maintenance cost beginning year 4
75 currAdminCost current administrative cost/hour in dollars
1000 powerCostPerYear cost of power for 1 server/year - current base rate
1.02 year3PowerIncrease increase in power cost per kWH starting year 3
0 currOutsideServiceCost current outside services hard cost total
admin 0.25 backupTime time in hours to back up 1 server/day
168 adminTime time in hours to administer 1 server/year
proposed 3 numNewServers number of new servers to be purchased
21000 costNewServer cost of each new server
4000 costNewSoftware cost of new virtualization software/server
0.2 costSoftwareMaintenance cost of new software maintenance contract (% of cost, $0 year 1)
600 newServerPowerCost cost of powering 1 new server/year
2100 newServerMaintenance cost of new server maintenance contracts/year
2 numTraineesYr1 number of employees needing training in year 1
1 numTraineesAfterYr1 number of employees needing training after first year
1500 trainingCost cost to train 1 new employee/year
constants 52 weeksPerYear number of weeks/year
24 hoursPerDay number of hours/day
8 adminDay number of hours/administrative day
2080 adminHoursPerYear number of hours an administrator works per year (= 8 hrs/day * 5 days/week * 52 weeks/yr)
168 hoursPerWeek number of hours in 1 week (7 day week) (= 24 hrs/day * 7 days/week)
365 daysinYear number of days in 1 year
260 adminDaysPerYear number of administrative days per year (5 days/week * 52 weeks/yr)

Current Cost Structure

Current Yearly Costs
Category Cost Notes
Year 1 Year 2 Year 3 Year 4 Year 5
Hard Costs
Power 20,000.00 20,000.00 20,400.00 20,400.00 20,400.00 20 servers X $1000/year
Server Maintenance 6,000.00 6,000.00 6,000.00 6,180.00 6,180.00 20 servers x $300/year
Outside Services 0.00 0.00 0.00 0.00 0.00 all operations handled by staff
Total Yearly Hard Costs 26,000.00 26,000.00 26,400.00 26,580.00 26,580.00
Total Five Year Hard Costs = 131,560.00
Soft Costs
Machine Administration 252,000.00 252,000.00 252,000.00 252,000.00 252,000.00 assume 1 week/server/year
Backup 136,875.00 136,875.00 136,875.00 136,875.00 136,875.00 assume 15 min/day/server
assume $75/hr administrative cost
Total Yearly Soft Costs 388,875.00 388,875.00 388,875.00 388,875.00 388,875.00
Total Five Year Soft Costs = 1,944,375.00
Total Yearly Current Costs = 414,875.00 414,875.00 415,275.00 415,455.00 415,455.00
Total Five Year Costs = 2,075,935.00

Virtualized Cost Structure

Virtualized Infrastructure Yearly Costs
Category Cost Notes
Year 1 Year 2 Year 3 Year 4 Year 5
Hard Costs
Machine Purchases 63,000.00 3 servers x $21K/server
Software Purchases 12,000.00 VMWare/server
Software Maintenance 0.00 2,400.00 2,400.00 2,400.00 2,400.00 3 VMWare at 20% maintenance
Power 1,800.00 1,800.00 1,836.00 1,836.00 1,836.00 3 servers x $600/year
Server Maintenance 6,300.00 6,300.00 6,300.00 6,489.00 6,489.00 3 servers x $2100/year
Training 3,000.00 1,500.00 1,500.00 1,500.00 1,500.00 2 employees year 1, 1/year thereafter
Outside Services 0.00 0.00 0.00 0.00 0.00 all operations handled by staff
Total Yearly Hard Costs 86,100.00 12,000.00 12,036.00 12,225.00 12,225.00
Total Five Year Hard Costs = 134,586.00
Soft Costs
Machine Administration 37,800.00 37,800.00 37,800.00 37,800.00 37,800.00
Backup 20,531.25 20,531.25 20,531.25 20,531.25 20,531.25
Total Yearly Soft Costs 58,331.25 58,331.25 58,331.25 58,331.25 58,331.25
Total Five Year Soft Costs = 291,656.25
Total Yearly Proposed Costs = 144,431.25 70,331.25 70,367.25 70,556.25 70,556.25
Total Five Year Costs = 426,242.25

Project Cost Summary

Virtualization Project Cost Summary
Category Cost
Year 1 Year 2 Year 3 Year 4 Year 5
Current Infrastructure Costs
Total Yearly Hard Costs 26,000.00 26,000.00 26,400.00 26,580.00 26,580.00
Total Five Year Hard Costs 131,560.00
Total Yearly Soft Costs 388,875.00 388,875.00 388,875.00 388,875.00 388,875.00
Total Five Year Soft Costs 1,944,375.00
Virtualized Infrastructure Costs
Total Yearly Hard Costs 86,100.00 12,000.00 12,036.00 12,225.00 12,225.00
Total Five Year Hard Costs 134,586.00
Total Yearly Soft Costs 58,331.25 58,331.25 58,331.25 58,331.25 58,331.25
Total Five Year Soft Costs 291,656.25
Net Five Year Hard Cost Savings -3,026.00
Net Five Year Soft Cost Savings 1,652,718.75
Net Five Year Overall Cost Savings 1,649,692.75