What is iSCSI?
iSCSI is an IP-based network storage protocol widely adopted in business solutions.
Sending SCSI commands over IP networks, it allows to use and manage storage peripherals in LANs, WANs and over the Internet.
High-end NAS and SANs usually supports iSCSI. With iSCSI you can manage multiple LUNs (logical unit number) on a physical iSCSI device.