Each node enclosure must have matching PCIe cards. Figure 5 (page 13) and the table that follows
show the locations and descriptions of the controller node ports.
NOTE: If you are upgrading from a two-node to a four-node configuration, you can have CNAs
installed in node 0 and node 1, and FC HBAs installed in node 2 and node 3.
Figure 5 Location of Controller Node Ports
Note the following locations:
Table 2 Description of Controller Node Ports
PortItem
Node Interconnect: Connects four directional interconnect cables that connect
the controller nodes (four node 7400 only)
1
PCI-e slot for optional HBA adapters. Slot 2 is the HBA. Each HBA can have
2 or 4 ports.
2
• 4–port 1Gb Ethernet NIC
• 4–port 8Gb FC HBA
• 2–port 10Gb Ethernet NIC
• 2–port 16Gb Fibre Channel HBA
• 2–port 10Gb CNA
SAS (DP-2 and DP-1): Connects the drive enclosures and I/O modules using
SAS cables.
3
• Slot 0 is the built in SAS ports.
• DP-1 is port 1 of slot 0.
• DP-2 is port 2 of slot 0.
Fibre Channel (FC-1 and FC-2): Connects to host systems.4
• Slot 1 is the built in FC ports.
• FC-1 is port 1 of slot 1.
• FC-2 is port 2 of slot 1.
2 Ethernet
RC: Connects to Remote Copy. (RC-1 port is port 1 of slot 3.)
5
MGMT: Connects to the storage array management interfaces.
NOTE: The MFG port is used for console access to the node.
I/O Modules
The I/O modules connect the controller nodes to the hard drives using a SAS cable and enabling
data transfer between the nodes, hard drives, PCMs, and enclosures. There are two I/O modules
located at the rear of the drive enclosure. There are two I/O modules per enclosure, numbered 0
and 1 from bottom to top. See Figure 6 (page 14).
Understanding Component Numbering 13
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