I mentioned in my previous post that I’m presenting at the inaugural PING Philly meetup and my topic is on sizing and configuring backend storage. One of the main points I want to stress in my discussion is the importance that IOPS have when planning your storage configuration. To help illustrate this importance, I created a simple RAID group calculator that shows an estimate of the total backend IOPS required to satisfy your application’s performance needs. Here’s the link to the calculator: http://www.eprich.com/tools/simple-raid-group-calculator
SSD = ~5250 IOPS
15K = ~175 IOPS
10K = ~135 IOPS
7.2K = ~75 IOPS
These estimates are the average of a variety of drives I’ve found on the interent. I also compared them to this: http://blog.aarondelp.com/2009/10/its-now-all-about-iops.html.
I’d like to add more functionality to the calculator, so feel free to add comments below with your thoughts and suggestions for how I can improve it!