IOPS – the name of the group of performance indicators of the disk subsystem, which stands for Input/output Operations Per Second and it’s meaning is exactly as the definition – the number of input/
IOPS (input/output operations per second) is the standard unit of measurement for the maximum number of reads and writes to non-contiguous storage locations. IOPS is pronounced EYE-OPS.
IOPS is frequently referenced by storage vendors to characterize performance in solid-state drives (SSD), hard disk drives (HDD) and storage area networks. However, an IOPS number is not an actual benchmark, and numbers promoted by vendors may not correspond to real-world performance.










