HP 3PAR StoreServ 7450 4-node HP 3PAR StoreServ 7450 Storage Installation Guid - Page 34

Cabling the Storage System, Cabling Controller Nodes, Host/Ethernet Cables

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5 Cabling the Storage System For more information about cabling drive enclosures (SAS) before you continue to cable the system, visit www.hp.com/go/3par. Scroll to Support, and click HP 3PAR StoreServ 7000/7450 Support and then Manuals. Then scroll to Setup and install - general and select the specific HP 3PAR StoreServ 7000/7450 Storage Cabling Configuration Guide. Cabling Controller Nodes Nodes are numbered 0 to 3 from bottom to top. Connections between Nodes 0 and 1 and Nodes 2 and 3 use four large interconnect cables. These cables are directional and must be installed correctly for the storage system to function properly. When inserting the cables, you should hear a click to confirm the cable is correctly installed. If you have to force the connector, the connector is upside down and needs to be inverted. The direction of the cable connection is indicated by labels on either end of the cable. In Figure 32 (page 34), see label A for interconnecting node 0 or 1. See label C for interconnecting node 2 or 3. Figure 32 Interconnecting the Controller Nodes Host/Ethernet Cables Table 5 External Controller Node Connections Connection Type Minimum Configuration Recommended Configuration Ethernet Connection from the Ethernet switch or hub to two controller nodes See the section Supported Network Topologies in HP 3PAR StoreServ 7450 Storage Site Planning Manual. Fibre Channel Connection from a host computer to one controller node Separate connections from host computers to each node, through a switch, 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 node pair (for example, nodes 0 and 1 or nodes 2 and 3) 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 34 Cabling the Storage System

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5 Cabling the Storage System
For more information about cabling drive enclosures (SAS) before you continue to cable the system,
visit
w
w
w
.hp
.co
m/go/3par
. Scroll to
Support
, and click
HP 3PAR StoreServ 7000/7450 Support
and then
Manuals
. Then scroll to
Setup and install — general
and select the specific
HP 3PAR
StoreServ 7000/7450 Storage Cabling Configuration Guide
.
Cabling Controller Nodes
Nodes are numbered 0 to 3 from bottom to top. Connections between Nodes 0 and 1 and Nodes
2 and 3 use four large interconnect cables.
These cables are directional and must be installed correctly for the storage system to function
properly. When inserting the cables, you should hear a click to confirm the cable is correctly
installed. If you have to force the connector, the connector is upside down and needs to be inverted.
The direction of the cable connection is indicated by labels on either end of the cable.
In
Figure 32 (page 34)
, see label
A
for interconnecting node 0 or 1. See label
C
for interconnecting
node 2 or 3.
Figure 32 Interconnecting the Controller Nodes
Host/Ethernet Cables
Table 5 External Controller Node Connections
Recommended Configuration
Minimum Configuration
Connection Type
See the section
Supported Network
Topologies
in
HP 3PAR StoreServ 7450
Storage Site Planning Manual
.
Connection from the Ethernet switch
or hub to two controller nodes
Ethernet
Separate connections from host
computers to each node, through a
switch, 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 node pair (for example,
nodes 0 and 1 or nodes 2 and 3) 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
34
Cabling the Storage System