HP StorageWorks 2/24 FW 07.00.00/HAFM SW 08.06.00 McDATA Products in a SAN Env - Page 47

SAN Router Performance Introduction to McDATA Multi-Protocol Products 1 • Implement iSAN routing and BC/DR solutions - SAN routers provide TCP/IP-based (iFCP protocol) distance extension solutions that connect geographically-dispersed SANs into an internetworked storage area network (iSAN), perform iSAN routing, and run business continuance and disaster recovery applications over existing MAN or WAN infrastructures. Refer to iSAN Routing and Implementing BC/DR Solutions for detailed information. • Provide connectivity for iSCSI integration - SAN routers provide cost-effective solutions (based on the iSCSI-protocol) to consolidate servers and storage that run a wide range of Windows-based applications. Refer to Consolidating and Integrating iSCSI Servers and Storage for detailed information. SAN routers provide the following general performance features: • High bandwidth - Fibre Channel ports on the Eclipse 1620 SAN router provide full-duplex serial data transfer at a rate of 1.0625 Gbps. Fibre Channel ports on the Eclipse 2640 SAN router provide full-duplex serial data transfer at a rate of 2.1250 Gbps. Intelligent ports provide Fibre Channel data transmission or, alternately, high-speed networking (IP) bandwidth through the following: - Data compression - SAN router software identifies repetitive information in an output data stream and applies a compression algorithm to ensure the data is more compact and efficiently transmitted. - FastWrite technology - FastWrite software improves write performance over WANs by responding to initiator write commands with local transfer ready (XFR_RDY) commands, and buffering output data at the SAN router closest to the corresponding target device. This eliminates XFR_RDY command transmissions and minimizes bursty data transfer over the WAN, thus reducing round-trip delays that are characteristic of extended-distance links. - Jumbo frames - Two Ethernet frames are typically required to transmit one Fibre Channel frame consisting of 2,112 bytes. The jumbo frame feature maps one Ethernet frame to one Fibre Channel frame, thus providing more efficient data transmission. Introduction to McDATA Multi-Protocol Products 1-21