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ISCSI forecast by Gartner to become dominating SAN attach protocol IDC projects that the iSCSI market segment could grow to approximately $2.48 billion IBM вЂre-introducesвЂ™ iSCSI to its line-up with its DS 300 product ISCSI specification ratified as a standard

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There is also a significant cost differential between iSCSI and Fibre channel, though iSCSI currently does not scale to the same performance level as a Fibre Channel SAN.ДЇibre Channel specification update for 2 Gbps An iSCSI IP storage network is generally viewed as less complex to implement and maintain than Fibre Channel. The oft-repeated promise of iSCSI is relatively uniform across many storage vendors and analysts. Using optical fiber to connect devices, FC-AL supports full-duplex data transfer rates. FC-AL was designed for new mass storage devices and other peripheral devices that require very high bandwidth. The most prominent Fibre Channel standard is Fibre Channel Arbitrated Loop (FC-AL).

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Fibre ChannelДЄ serial data transfer architecture developed by a consortium of computer and mass storage device manufacturers and now being standardized by ANSI. iSCSI will also return a response to the request using the same protocol. At the receiving end, the SCSI commands are separated from the request, and the SCSI commands and data are sent to the SCSI controller and then to the SCSI storage device. When an operating system receives a request it generates the SCSI command and then sends an IP packet over an Ethernet connection. iSCSI supports a Gigabit Ethernet interface at the physical layer, which allows systems supporting iSCSI interfaces to connect directly to standard Gigabit Ethernet switches and/or IP routers. Short for Internet SCSI, iSCSI is an IP-based standard for linking data storage devices over a network and transferring data by carrying SCSI commands over IP networks. Because stored data does not reside directly on any of a networkвЂ™s servers, server power is used for business applications, and network capacity is released to the end user. In this case, the server merely acts as a pathway between the end user and the stored data. As more storage devices are added to a SAN, they too will be accessible from any server in the larger network. A SANвЂ™s architecture works in a way that makes all storage devices available to all servers on a LAN or WAN.

A storage device is a machine that contains nothing but a disk or disks for storing data. Storage Area Network (SAN) is a high-speed sub network of shared storage devices. Getting Started: Understanding The Terminology of iSCSI vs.