IOPS

IOPS (Input/Output Operations Per Second, pronounced eye-ops) is a common performance measurement used to benchmark computer storage devices like hard disk drives (HDD), solid state drives (SSD), and storage area networks (SAN). As with any benchmark, IOPS numbers published by storage device manufacturers do not guarantee real-world application performance.

IOPS can be measured with applications, such as Iometer (originally developed by Intel), as well as IOzone and FIO and is primarily used with servers to find the best storage configuration.

The specific number of IOPS possible in any system configuration will vary greatly, depending upon the variables the tester enters into the program, including the balance of read and write operations, the mix of sequential and random access patterns, the number of worker threads and queue depth, as well as the data block sizes. There are other factors which can also affect the IOPS results including the system setup, storage drivers, OS background operations, etc. Also, when testing SSDs in particular, there are preconditioning considerations that must be taken into account.

Read more about IOPSPerformance Characteristics, Examples

Other articles related to "iops":

Kaminario K2
... SSD SAN storage array that provided millions of IOPS for database applications ... the company announced audited SPC-1 results of 1,219,973.91 IOPS at $.40 per SPC-1 IOPS ...
GEC 4000 Series - Input/Output
... The 4000 I/O design is based around having a number of Input/Output Processors known as IOPs, each of which interfaces between the store and a set of I/O controllers ... The IOPs are controlled by the Nucleus function in the CPU, but once an I/O event is triggered, they operate autonomously without interaction with the CPU until the I/O completes ... The Normal Interface IOPs can each support up to 255 or 256 simultaneous I/O operations, each on a separate Way ...
IOPS - Examples
... Some ballpark numbers Device Type IOPS Interface Notes 7,200 rpm SATA drives HDD ~75-100 IOPS SATA 3 Gb/s 10,000 rpm SATA drives HDD ~125-150 IOPS SATA 3 Gbit/s 10,000 rpm SAS drives HDD ~140 IOPS SAS ... Intel X25-E (SLC) SSD ~5,000 IOPS SATA 3 Gbit/s Intel's data sheet claims 3,300 IOPS and 35,000 IOPS for writes and reads, respectively. 5,000 IOPS are measured for a mix ...
VRPM - Comparing SSD Vs. HDD Input/Output Operation
... as the number of Input/Output operations Per Second (IOPS) it achieves ... HDD IOPS is proportional to RPM ... and rotational latency are two HDD activities that significantly reduce HDD IOPS ...
IBM SAN Volume Controller - Performance
... record for SPC-1 performance benchmarks, returning nearly 275K (274,997.58) IOPS ... SVC broke its own record of 274,997.58 SPC-1 IOPS in March 2010, with 315,043.59 for the 4 node cluster and 380,489.30 with the 6 node cluster, records that stood until ... SPC-1 performance benchmarks, returning over 500K (520,043.99) IOPS (I/Os per second) using 8 SVC nodes and Storwize V7000 as the backend disk ...