Brocade 815 HBA卡直连VNX存储.pdfVIP

Brocade 815 HBA 卡直连VNX 存储 黎旭祥 QQ:2668550 关于FC 拓扑-引自维基百科 /wiki/Fibre_Channel • Point-to-point (FC-P2P). Two devices are connected directly to each other. This is the [1] simplest topology, with limited connectivity. • Arbitrated loop (FC-AL). In this design, all devices are in a loop or ring, similar to token ring networking. Adding or removing a device from the loop causes all activity on the loop to be interrupted. The failure of one device causes a break in the ring. Fibre Channel hubs exist to connect multiple devices together and may bypass failed ports. A loop may also be made by cabling each port to the next in a ring. • A minimal loop containing only two ports, while appearing to be similar to FC-P2P, differs considerably in terms of the protocol. • Only one pair of ports can communicate concurrently on a loop. • Maximum speed of 8GFC. • Switched fabric (FC-SW). All devices or loops of devices are connected to Fibre Channel switches, similar conceptually to modern Ethernetimplementations. Advantages of this topology over FC-P2P or FC-AL include: • The switches manage the state of the fabric, providing optimized interconnections. • The traffic between two ports flows through the switches only, it is not transmitted to any other port. • Failure of a port is isolated and should not affect operation of other ports. • Multiple pairs of ports may communicate simultaneously in a fabric. Brocade HBA 卡 Director 问题 在部署虚拟化测试环境中发现 Brocade 的HBA 卡直连EMC VNX5100 存储,发 现两者无法互相发现: 刚开始怀疑是存储的问题,但问了不少人都说 Brocade 的 HBA 卡不支持直 连,VNX 是支持直连的,而且VNX 上的前端 FC 端口也显示到速率,证明物理层连 接是没问题的,Google 一番,发现出现不少这种情况,都显示Brocade 的卡不支持 直连( only FCSW),必须带交换机,后来Google 发现,新版本的 BCU3.2.1 支持直