Cabling Connections Between Dual Controllers And Drive Enclosures Of Mixed Type - HP P2000 G3 User Manual

Controller A
Controller B
1
1
P1
2
P1
P1
2
P1
Fault-tolerant cabling
Drive enclosure IOM face plate key:
1
= P2000 6Gb drive enclosure
2
= D2700 6Gb drive enclosure
3
= MSA70 3Gb drive enclosure
4
= MSA2000 3Gb drive enclosure
Figure 10

Cabling connections between dual controllers and drive enclosures of mixed type

The figure above shows a sample fault-tolerant cabling scenario on left, and a straight-through cabling
scenario on right. Both diagrams show drive enclosures of mixed type. Do not mix SAS1.1 and SAS2.0
expanders, except as described in
except when upgrading legacy systems.
In the illustration on the left, note that the D2700 6Gb drive enclosures could alternatively be cabled before
the P2000 6Gb drive enclosures. The illustration at the right shows a D2700 6Gb drive enclosure before a
P2000 6Gb drive enclosure, MSA70 3Gb drive enclosure, and MSA2000 3Gb drive enclosure. Note that
the MSA2000 3Gb drive enclosure is cabled after the other drive enclosures, using straight-through
cabling.
Although 6Gb drive enclosures can be cabled after an MSA70 3Gb drive enclosure, performance of the
6Gb devices will be limited to 3Gb.
IMPORTANT:
P2000 G3 MSA System Cable Configuration Guide.
32 Installing the enclosures
Out
In
Out
In
Out
In
Out
In
P2
P2
P2
P2
Additional cabling considerations
For comprehensive configuration options and associated illustrations, refer to the HP
1A 1A
1B 1B
2A
2A
2B
2B
3A
3A
3B
3B
4A
4B
5A
5A
5B
5B
Controller A
Controller B
P1 P2
P2
2
P1
In Out
In Out
1
4A 4B
In Out
In Out
In Out
4
In Out
Straight-through cabling
on page 26. Avoid mixing them
3