IOPS (Input/Output Operations Per Second, pronounced eye-ops) is a common performance measurement used to benchmark computer storage devices like:
The specific number of IOPS possible in any system configuration will vary greatly, depending upon the variables the tester enters into the program, including:
Be careful, there are also a lot of other factors which can also affect the IOPS results including:
The answer is typically converted to MegabytesPerSec
<MATH>IOPS = \frac{\text{Bytes Per Second}}{\text{Transfer Size In Bytes}}</MATH>
<MATH> IOPS = \frac{1}{seek + latency} </MATH>
Drive - RAID Technology Overview
<MATH> IOPS = \frac{\text{Number of disks} * \text{Average I/O Operations on 1 disk per-sec}}{ \text{% of read workload} + (\text{Raid Factor} * \text{% of write workload})} </MATH> where:
IOPS can be measured with applications, such as: