Installing Enclosures
96-30065-001 Rev. A0
DataDirect Networks EF4024 FC RAID System Setup Guide | 17
2.2.2
Enclosure Cabling Diagrams
The cabling diagrams in this section show both the
reverse
and
straight-through
cabling
schemes for the EF4024 controller enclosures and expansion enclosures.
For clarity, the cabling diagrams show only relevant details such as faceplate outlines and
expansion ports. For detailed enclosure illustrations, refer to
Chapter 1
.
Figure 8
shows how to connect one expansion enclosure to the controller enclosure.
Figure 9
shows the straight-through cabling scheme. Using this method, if an expansion
enclosure fails, the enclosures that follow the failed enclosure in the chain are no longer
accessible until the failed enclosure is repaired or replaced.
Figure 8. Connecting One Expansion Enclosure to Controller Enclosure
Controller
Enclosure 0
Expansion
Enclosure 1
Controller Module 0A
Controller Module 0B
Expansion
Expansion
In
Out
In
Out
Module 1A
Module 1B
Figure 9. Connecting Three Expansion Enclosures (Straight-Through Cabling)
Controller
Enclosure 0
Expansion
Enclosure 1
Expansion
In
Out
Module 1A
Expansion
Module 1B
Controller
Module 0A
Controller
Module 0B
Expansion
Module 2A
Expansion
Module 2B
Expansion
Module 3A
Expansion
Module 3B
In
Out
In
Out
In
Out
In
Out
In
Out
Expansion
Enclosure 2
Expansion
Enclosure 3
