IOzone!

Disk Speed Test is an easy to use tool to quickly measure and certify your disk performance for working with high quality video! Simply click the start button and Disk Speed Test will write test your disk using large blocks of data, and then display the result. Disk Speed Test will continue to test writes and reads from your disk so you can evaluate both performance and readability over time.

As the Iometer Users Guide says, Iometer is an I/O subsystem measurement and characterization tool for single and clustered systems. It was originally developed by the Intel Corporation and announced at the Intel Developers Forum (IDF) on February 17, 1998 - since then it got wide spread within the industry.

SQLIO is a tool provided by Microsoft which can also be used to determine the I/O capacity of a given configuration.

CCSIO Bench measures the maximum possible read/write speed for a given file system location, including local volumes, virtual drives and remote shares. In plain terms, it measures how fast one can possibly read/write very large files from/to specified location.

2U load generation appliance, also runs under a VM, A leading commercial performance validation product for networked storage infrastructure. We help companies reduce risk and save millions of dollars by aligning storage deployment decisions to application workload performance requirements.

Vdbench is a disk and tape I/O workload generator for verifying data integrity and measuring performance of direct attached and network connected storage on Windows, Solaris, Linux, AIX, OS/X and HP/UX.