Stress test SQL Server for new hardware
Download SQLIOSim from http://download.microsoft.com and install on server.
When detailing the file location , use the same as the SQL Server files. SQLIOSim will attempt to simulate the SQL Server database IO path.
The emphasis is to hammer the system but stay under the threshold. SQLIOSim has the capacity to throttle the outstanding operations. It decreases the load and IO completion time is standardised
Running Average IO duration –
Response time under stress
Date files < 5 ms is optimal
Log file – 0-2 is optimal
Total IO time – if the If the values for the Accumulators are similar for two drives, but one drive has significantly less Total IO Time, then the latter performs much because it was able to service the same I/O in less time.
Number of times IO throttled – lower the better
For performance testing check Disk IO performance and SQLIO
Author: Jack Vamvas (http://www.sqlserver-dba.com)