iSCSI

This term or word is pronounced as “eye skuzzy” throughout the networking world and the term iSCSI is an acronym for Internet SCSI or Internet Small Computer Systems Interface and it is an internet protocol. It is an IP based storage networking standard for the linking data storage facilities over a network and transferring data by carrying SCSI commands over the IP networks. This protocol is used to transfer the data over the intranets and to manage the storage over long distances.

This protocol can be used extensively to transmit or transfer the data over the local area networks or LAN, wide area networks or WANs, or the internet and along with that it can enable location independent data storage and retrieval without any issue. The systems that support the iSCSI interface can directly connect with the standard Gigabit Ethernet switches or IP routers without a problem for the storage or retrieval of the information. The reason for this ability of the system is that, the iSCSI supports the Gigabit Ethernet interface over the physical layer.

The way this iSCSI technology works is that in the start the operating system receives a request, it generates the SCSI command, which is then send as an IP packet over the Ethernet connection. When the command reaches the end point or the destination point, at that time the SCSI commands are separated from the request. After this step the SCSI commands along with the data are sent to the SCSI controllers and then to the SCSI storage device, where the data is stored.
This iSCSI technology is extremely important technology for the SAN technology to work because it is this  iSCSI technology which enables SAN to be deployed in a LAN (local area network), WAN (wide area network) or MAN (metropolitan area network).