Calculating the Maximum Concurrent Users in the HP Consolidated Client Infrastructure (CCI) v1.3 Environment Abstract.............................. 2 Introduction............................2 Calculating the MCU..........................2 MCU Calculation Examples ........................5 Example 1: Small Enterprise Company ....................5 Example 2: Medium Enterprise Company ................... 5 Example 3: Large Enterprise Company ....................
Abstract A cost-efficient Consolidated Client Infrastructure (CCI) implementation is one that can satisfy end user demands without an excessive amount of hardware. Since the maximum number of concurrent users defines the amount of hardware to be purchased, calculating maximum concurrency becomes an important aspect of designing a CCI solution.
Page 3
Although the HP baseline MCU of 70% is a reasonable assumption for most companies, the old saying “Your mileage will vary” applies. There are many factors that can influence what a corporation’s MCU will be. The amount of idle time before a user is automatically logged off has the biggest impact on MCU.
Page 4
Though every effort should be made to correctly gauge the MCU as close as possible, CCI scales easily and blade PCs can be added quickly should a company’s MCU be underestimated. Though acquisition cost does matter, the cost delta between a typical 70% MCU and 95% MCU on a per seat basis is estimated to be only several hundred dollars more per seat, and as such, because 80% of traditional PC total cost of ownership (TCO) is support costs and not acquisition costs, the impact to the TCO should be negligible over the long-term.
MCU Calculation Examples Example 1: Small Enterprise Company The business in this example is a 4,000 employee enterprise in the central US for which the management has concluded the value proposition of CCI is appropriate for 1000 users. Though many are work-at-home employees and often access their blades from a number of satellite offices as well as their home, they are all within 200 miles of each other in the same time zone and work generally the same hours.
Example 3: Large Enterprise Company The business in this example has 15,000 full time employees. It is a US-based tax preparation firm with thousands of retail offices throughout the United States. This firm adds an extra 5,000 temporary employees from January thru April to assist with preparing customer’s tax documents. All employees are asked to avoid taking vacation or any other type of leave in the critical months of January thru April.