HP P10000 HP P10000 3PAR Storage System Physical Planning Manual (QL226-96013, - Page 46

Required Cables The quantities and lengths of the cables required for storage system installation vary according to the specific storage system and network configuration. Fibre Channel cables are used externally to connect the controller node to the customer switch or host (in the case of a directly connected host). Fibre Channel cables are used internally to connect the controller node to the drive chassis (inter-cabinet or cabinet to cabinet). The Fibre Channel cables provided by HP have a custom strain relief feature to help maintain the proper bend radius of the cables. For this reason, HP requires that you use only Fibre Channel cables provided by HP. However, HP does not provide any networking cables or equipment such as Ethernet and modem cables. Table 7 (page 13) identifies the types of cables commonly required for storage system installation. Table 17 Required Cables Cable Type Ethernet (Category 5) 3 cables minimum with 2 static IPs Multimode Fibre Channel Modem Outside Diameter Standard 1.6 mm Standard Connector Type RJ-45 LC-LC RJ-45 NOTE: For Ethernet and Fibre Channel cables that connect the storage system to the network and hosts, reserve approximately 7 feet (2 meters) of each cable for internal routing within the storage server cabinet. Measure the distance between the two cabinets and add 14 feet (4 meters) to determine the total length of cable required. External Cable Connections Table 18 (page 46) includes specific guidelines for connecting the controller nodes to the network and to host computers. Refer to "Supported Network Topologies" (page 41) for descriptions of the supported network topologies. Table 18 External Controller Node Connections Connection Type Minimum Configuration Recommended Configuration Ethernet Connection from the Ethernet switch See Supported Network Topologies in or hub to two controller nodes Chapter 6. Fibre Channel Connection from a host computer to one controller node Separate connections from host computers to each node, with connections distributed evenly across all nodes1 Maintenance None Varies according to system and network configuration 1 To provide redundancy and to permit online software upgrades, both controller nodes in a single horizontal node pair (for example, nodes 0 and 1, nodes 2 and 3, and so on) must maintain connections to each host server. • Each controller node supports one Ethernet connection to a switch or hub. Separate connections from the Ethernet switch or hub to at least two controller nodes are required to support redundancy. With redundancy, one IP address is shared between the two connections and only one network connection is active at a time. If the active network connection fails, the IP address is automatically moved to the surviving network connection. • At a minimum, the storage system requires one Fibre Channel (or iSCSI) connection from a host computer to a controller node. However, separate connections from each host computer 46 Network, Cabling and Connectivity