.

Various Free and Paid Tools for Storage / Virtualization / Networking / SAN / iSCSI

.

Storage Tools

xBench
Mac Benchmarking tool for various different components within the computer

http://www.xbench.com/

AJA System Test
For creating I/O for test / development purposes for attached disk arrays – USB, Firewire, eSATA
http://wakoopa.com/software/aja-system-test/versions

Iometer
For creating I/O for test / development purposes for attached disk arrays
http://www.iometer.org/doc/downloads.html

vdbench
Is a workload generator for Tape, Disk and works with various platforms including Linux, Mac
http://sourceforge.net/projects/vdbench/files/

.

Virtualization Tools

.

.

.