HP 3000 Enterprise Virtual Array - Manual (Page 46)

0112a
Front
Rear
1 2
3 4 5 6 7 8 9
10
10
Figure 10 FC drive enclosure—front and rear views
1. Drive bay 1 2. Drive bay 14
3. EMU 4. I/O module B
5. Blower 1 6. Power supply 1
7. Blower 2 8. Power supply 2
9. I/O module A 10. Status indicators (EMU, enclosure power,
enclosure fault)
I/O modules
Two I/O modules provide the interface between the drive enclosure and the host controllers. See
Figure 11 . 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.
46 Enterprise Virtual Array hardware components