Dell just came out of with a new server profiling tool. Dpack can be downloaded from support.dell.com can and typing DPACK in search box. It can scan Windows, Linux and ESX/ESXi 3.5, 4.x and 5.x using VCenter.
It allows collection periods from 4 hours to 24 hours unless changed from command line to increase the period by using /extended switch in that case it will allow for data collection for up to 7 days It runs from memory and is 596k executable.
Dell encourages to include end user information in final report. it saves iokit file. report includes IOPS, MB/Sec, Avg. IO Size, Avg. Latency and Queue. It is not clear or documented that how to parse iokit file.