Low-cost iSCSI configuration strategy in Linux network environment

First, the iSCSI development roadmap In early 2001: IBM and Cisco developed iSCSI technology in 2001, two and respectively introduced iSCSI products & mdash; IBM IP Storage 200i and Cisco SN5420 Router.

December 2001: NetApp has launched its own IP SAN, which uses the self-developed VLD protocol (Virtual Local Disk), which belongs to the Block over IP mode. February 2003: SNIA (Storage Networking Industry Associate) finally officially adopted the iSCSI standard. The industry does not regard this standardization as the most critical factor in the development of iSCSI. Since then, more and more manufacturers have begun to further develop related products that meet the industry standards, and iSCSI has begun to be favored by the industry. YORK software special area selection Windows Vista area POPO area QQ area QQ hang-up registry area Windows optimization Flash MX video tutorial Photoshop video tutorial web design video tutorial photo processing digital darkroom PPT animation demonstration tutorial Excel animation tutorial set Word animation demonstration tutorial Google area Troy Trojans hacker knowledge tutorial area firewall application area to understand Web2.0 Windows API development zone network programming area VB database programming area image processing and multimedia programming

May 2003: Microsoft in Windows Server 2003, officially began to support iSCSI and provides download of the iSCSI Initiator driver. Microsoft's deep-rooted approach has driven the development of the entire iSCSI industry. So next, regardless of the support of various operating platforms or hardware and software will be more and more complete. October 2004: HP released the IP Storage 500/1500. 2005: Since standardization and Microsoft support have solved the biggest development bottleneck of iSCSI, the full popularity of iSCSI is only a matter of time. However, the industry has always been inconsistent with the time when it began to spread. Most of the survey agencies believe that the time should be in 2006, but the manufacturers have agreed that in 2005, they will have the opportunity to see the market take off. Second, iSCSI technology SAN (short for Storage Area Network) means storage area network, is truly focused on enterprise-level storage. The SAN uses a separate network (separated from a traditional LAN) to connect all of the storage and servers. This network can use high-performance implementation technologies, such as Fibre Channel, to accommodate protocols such as SCSI, allowing data blocks to move. It is more efficient and allows users to freely add devices such as disk arrays, tape libraries or servers. Today's SAN is basically realized by Fibre Channel. Fibre Channel, also referred to as FIBRE CHANNEL, also known as Fibre Channel, is a network standard for high-speed data transmission using dedicated devices. It is mainly used to connect server backbones (backbones). And connect the server to the storage device. A SAN with high-speed FIBRE CHANNEL as the transmission medium has the advantages of Fibre Channel in terms of distance, performance and connectivity. If combined with Fibre Channel switches, it can provide data transmission rates of up to 2Gb/s, making it independent of the application server network system. Outside the SAN has almost unlimited storage capacity. However, although the SAN realized by FIBRE CHANNEL has superior performance and excellent expansion, the price is surprisingly expensive, and management is also very difficult, which is unbearable for the average user. It is also the reason why many companies have to reluctantly give up the SAN. iSCSI (Internet Small Computer System Interface) is a standard for data block transmission over Internet Protocol networks, especially Ethernet. It is a technology that integrates IP and SCSI. Its biggest feature is that standard SCSI commands can be transferred between the host system (initiator) and the storage device (target) on the TCP/IP network. Compared to Fibre Channel, iSCSI has many advantages, and it is more appropriate to use ‘iSCSI=lower + high performance & rsquo; iSCSI is a technical standard based on the IP protocol. It implements the connection between SCSI and TCP/IP protocols. Users who use the LAN as the network environment can transfer and manage information and data conveniently and quickly with a small amount of input. . Compared with the previous network access storage, iSCSI solves many problems such as openness, capacity, transmission speed and compatibility, allowing users to build a storage area network through existing TCP/IP networks, which can be managed more easily. SAN storage. The iSCSI structure is shown in Figure 1.