http://vmktree.org/iometer/ IOmeter is a great way of measuring your disk io performance. It's a nice way to check if your system is performing optimally and to compare your results with others. Lots of iometer results have been posted results in these threads over at VMTN. Get iometer from this page: Iometer files ..or use this .iso file (32 bit windows only): Perftest.iso Config file is here: OpenPerformanceTest.icf (8GB) OpenPerformanceTest16.icf (16GB) OpenPerformanceTest32.icf (32GB) SERVER TYPE: CPU TYPE / NUMBER: HOST TYPE: STORAGE TYPE / DISK NUMBER / RAID LEVEL: Paste content of results.csv file here