HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 - (English) Advanc - Page 102

Topologies for HP-UX The topology of a network or a Fibre Channel Arbitrated Loop (Fibre Channel-AL) is the physical layout of the interconnected devices; that is, a map of the connections between the physical devices. The topology of a Fibre Channel-AL is extremely flexible because of the variety and number of devices, or nodes, that can be connected to the Fibre ChannelAL. A node can be a host system or server, a 10-port HP Fibre Channel-AL hub, or the controller modules in a disk array. Two controller modules and two power supply modules are required for high availability topologies. Because it is impossible to document all the possible physical layouts, the hardware topologies supported by the Disk Array FC60 are grouped into five general categories: • Basic topology • Single-system distance topology • High availability topology • High availability, distance, and capacity topology • Campus topology In addition to these topologies which include hubs, the disk array FC60 supports some switch configurations. Each of the five types of topology and switch configurations are documented in the following sections. 102 Topologies for HP-UX