Hp 3000 Enterprise Virtual Array Uživatelský manuál Strana 77

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Storage System Hardware Components
77Enterprise Virtual Array 3000 User Guide
FC-AL I/O Modules
Two I/O modules provide the interface between the drive enclosure elements and
the host controllers. See Figure 32 and Figure 33. They route data to and from the
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 each drive enclosure.
The I/O modules are functionally identical and similar in appearance, but they are
not interchangeable. See Figure 31. The modules are designed to ensure that you
can install only:
The A module (7) at the right end of the enclosure behind drive bay 1.
The B module (2) at the left end of the enclosure next to the EMU.
1 EMU
2 I/O module B
3 Blower 1
4 Power supply 1
5 Blower 2
6 Power supply 2
7 I/O module A
Figure 31: Drive enclosure—rear view
CXO7950
A
21 4 6 73 5
Figure 32: I/O module B Figure 33: I/O module A
CXO7421A
CXO7420A
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