HP 3PAR StoreServ 7450 Storage Troubleshooting Guide

Table 2 Controller Node Ports (continued)

PortItem

SAS (DP-2 and DP-1)--used with SAS cables to connect to the drive enclosures

and I/O modules

Node Interconnect--Used with 4 directional interconnect cables that connect

the controller nodes (4-node 7400 only)

PCI-e slot for optional 4-port 8 Gb/s FC HBA or 2-port 10 Gb/s CNA5

NOTE: The MFG port is not used.

I/O Modules

The I/O modules connect the controller nodes to the hard drives using a SAS cable, enabling the

transfer of data between the nodes, hard drives, PCMs, and enclosures. The I/O modules are

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 9).

Figure 6 I/O Modules Numbering

NOTE: The I/O modules are located in slots 0 and 1 in the M6710 Drive Enclosure.

Power Cooling Modules

The Power Cooling Module (PCM) is an integrated power supply, battery, and cooling fan. There

are two types of PCMs:

• The 580 W is used in the drive enclosures and does not include a battery.

• The 764 W is used in the node enclosures and includes a replaceable battery.

The PCMs are located at the rear of the storage system, and on the sides of the enclosure. There

are two PCMs per enclosure, numbered 0 and 1 from left to right.

Understanding Component Numbering 9