HP ProLiant 3000 Microsoft Exchange Server 5.5 on the Compaq ProLiant 3000 - Page 9

Performance Data Disclosure (Configuration B, C)(Measured during test run at steady state) Indicator 5000 Users (Configuration B) 6500 Users (Configuration C) Response Time (ms) 241 312 IS Buffer Cache Hit % 98.21% 98.91% Disk Queue Length - IS Volume Disk Queue Length - Log Volume Average Read I/Os - IS 5.144 0.032 190.686 3.269 0.034 154.486 Average Write I/Os - IS 77.33 99.064 Average Write I/Os - Log 77.325 78.33 Average Pages/Sec 0.046 0 Average Available Bytes 4.85MB 1.1GB IS Send Queue Average 1.889 3.222 IS Receive Queue Average 0.889 0.919 MTA Work Queue Average 0.566 0.636 Messages Open/sec 19.695 23.119 Average RPC Operations/sec 246.148 300.112 Messages Submitted (8hours) Calculated Messages/User 74256.272 14.851 90866.928 13.979 Average CPU Utilization 54.89% 77.54% Average Context Switches/Sec Average CPU Queue Length 1952 1.939 1944 4.101 Working Set - STORE 463MB 1.14GB Virtual Bytes - STORE 851MB 1.52GB Note: Configuration B, C (333 MHz CPU) Performance results measured using Microsoft NT Performance Monitor. Measurements were obtained by measuring averages for the period of steady-state activity (i.e. after 6,500 users were successfully logged on). Tests measure the messaging throughput of a single server, single site topology. For deployment specific information, contact a Microsoft or Compaq representative. More information can be found at: http://www.microsoft.com/exchange/support/deployment/planning/deploy.asp?A=5&B=1 ECG096/0998