Dot Hill Systems 4524 - Straight-Through Cabling between a 4 U Enclosure and 2 U12 or 2 U24 Drive Enclosures; Reverse-Cabling between a Dual-Controller 4 U Enclosure and Mixed-Model Drive Enclosures

50 Installing the enclosures
Figure 47 Straight-through cabling between a 4U enclosure and 2U12 or 2U24 drive enclosures
Figure 47 is very similar to Figure 45 on page 48. It shows straight-through cabling of maximum
enclosures when cascading either 2U12 or 2U24 drive enclosures from the 4U56 controller enclosure. In
this situation, the maximum number of supported enclosures is eight (including the controller enclosure).
Figure 48 Reverse-cabling between a dual-controller 4U enclosure and mixed-model drive enclosures
Controller
enclosure
0
Drive
enclosure
In Out
Out
0B
0A
1A
1B
Controller A
Controller B
1
In
2A
2B
3A
3B
Drive
enclosure
2
Drive
enclosure
3
In Out
In
Out
In Out
In Out In Out
Drive
enclosure
5
Drive
enclosure
6
Drive
enclosure
7
Drive
enclosure
4
4A
4B
In Out
In Out
In Out
In Out
In Out
5A
5B
6A
6B
7A
7B
In Out
In Out
Controller
enclosure
0
Drive
enclosure
In Out
Out
0B
0A
1B
1A
Controller A
Controller B
1
In
2A
2B
3A
3B
Drive
enclosure
2
Drive
enclosure
3
In
Out
In Out
In Out
In Out