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
Connector Type
Outside Diameter
Cable Type
RJ-45
Standard
Ethernet (Category 5) 3 cables
minimum with 2 static IPs
LC-LC
1.6 mm
Multimode Fibre Channel
RJ-45
Standard
Modem
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
Recommended Configuration
Minimum Configuration
Connection Type
See Supported Network Topologies in
Chapter 6.
Connection from the Ethernet switch
or hub to two controller nodes
Ethernet
Separate connections from host
computers to each node, with
connections distributed evenly across
all nodes
1
Connection from a host computer to
one controller node
Fibre Channel
Varies according to system and network
configuration
None
Maintenance
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
Summary of Contents for P10000
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