This page contains RAID calculators, IOPS calculators and other estimatior tools to use for raid disks and disk arrays. If you know of other calculators, please leave a comment and I’ll list it here. Thanks!
Update: I have an Excel workbook “cheat sheet” that I use to do quick calculation
RAID, IOPS, MBps Excel Cheat Sheet
Link: https://techish.net/technology/hardware/raid-iops-mbps-and-more-excel-cheat-sheet/
Great resource for calculating IOPs from a given RAID configuration and also calculating needed disks for average IOPs.
wmarow’s iops calculator
Link: http://wmarow.com/storage/strcalc.html
iBeast Basic RAID disk space utilization calculator
Link: http://www.ibeast.com/content/tools/RaidCalc/RaidCalc.asp
WolframAlpha’s Raid Calculator: (Who doesn’t love Wolfram!?)
Link: http://www.wolframalpha.com/input/?i=RAID+calculator
eprich: Estimate Storage Backend IOPs
Link: http://www.eprich.com/tools/simple-raid-group-calculator