I/O Modules; Disk Enclosure Front View Without Bezel Ears; Disk Enclosure Rear View - HP StorageWorks 6400/8400 - Enterprise Virtual Array User Manual

1. Rack-mounting thumbscrew
3. Drive LEDs
5. Enclosure status LEDs
Figure 2 Disk enclosure front view without bezel ears
.
1. Power supply 1
3. Fan 1
5. Fan 1 status LED
7. I/O module B
9. Enclosure status LEDs
11. Power push button
Figure 3 Disk enclosure rear view
.

I/O modules

Two I/O modules provide the interface between the disk enclosure and the host controllers,
4). For redundancy, only dual-controller, dual-loop operation is supported. Each controller is connected
to both I/O modules in the disk enclosure.
Each I/O module has two ports that can transmit and receive data for bidirectional operation.
Activating a port requires connecting a Fibre Channel cable to the port. The port function depends
upon the loop.
18 EVA6400/8400 hardware
2. Disk drive release
4. UID push button
2. Power supply 1 status LED
4. Enclosure product number and serial number
6. I/O module A
8. Rear UID push button
10. Fan 2
12. Power supply 2
(Figure