HP 4100 Enterprise Virtual Array Instrukcja Użytkownika Pobierz pdf (Strona 21)

8. Power supply 27. Blower 2

10. Status indicators (EMU, enclosure power, enclosure

fault)

9. I/O module A

I/O modules

Two I/O modules provide the interface between the drive enclosure and the host controllers. See

Figure 7 (page 21). They route data to and from the disk drives using Loop A and Loop B, the

dual-loop configuration. For redundancy, only dual-controller, dual-loop operation is supported.

Each controller is connected to both I/O modules in the drive enclosure.

Figure 7 I/O module

1. Status indicators (Upper port, Power, and Lower port)

2. Upper port

3. Lower port

The I/O modules are functionally identical, but are not interchangeable. Module A can only be

installed at the right end of the enclosure, and module B can only be installed at the left end of the

enclosure. See Figure 6 (page 20).

Each I/O module has two ports that can both transmit and receive data for bidirectional operation.

Activating a port requires connecting a FC cable to the port. The port function depends upon the

loop. See Figure 8 (page 21).

Figure 8 Input and output ports

2. Loop A upper port1. Loop A lower port

4. Loop B upper port3. Loop B lower port

Fibre Channel drive enclosures 21

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HP 4100 Enterprise Virtual Array Instrukcja Użytkownika Strona 21