iSCSI Technology re-defines how storage technology is deployed today, in that the previous dominant way to deploy storage technology was through Fibre Channel [FC] Technology.

However, a FC Technology based Network ties the Client into one of a number of “single source” suppliers that would always advise [promote] that all the FC components should be “single sourced” from them.This adds significantly to the Total Cost of Ownership [TCO] from the initial installation, through to on-going support and the inevitable upgrade.

iSCSI Technology on the other hand is an established architecture that comprises of :-
Operating System Driver
iSCSI Storage Management
iSCSI Appliance Server
Any Storage Media [Hard Disk, Magnetic Tape, Optical, etc.]