ServerNet Cluster 6780 Planning and Installation Guide (G06.29+, H06.06+, J06.03+)

Planning for Installation and Migration
ServerNet Cluster 6780 Planning and Installation Guide—527301-008
3-16
Task 7: Plan for the Fiber-Optic Cables
As shown in Table 3-9, the number of cables varies with your configuration.
Table 3-8. Cables Required for Clustering
Cable Type Number of Cables Cable Length
SMF cables
with SC to
LC
connectors
Based on how many NonStop S-series
servers you plan for the ServerNet cluster,
determine the number of cables needed.
Refer to Table 3-9
on page 3-16.
Based on the distance
between each ServerNet node
and the switch it connects to,
determine the length needed
for the cables.
SMF cables
with LC
connectors
If you have only one zone or are using
MMF cables for the connections between
zones, these cables are not needed.
Based on the number of zones and layers
in the ServerNet cluster, determine the
number of cables needed between each
zone. Refer to Table 3-9
on page 3-16.
Based on the distance
between each zone and the
type of servers in the
ServerNet cluster, determine
the length needed for the
cables.
MMF cables
with LC
connectors
Based on the number of zones and layers
in the ServerNet cluster, determine the
number of cables needed between the
layers. Refer to Table 3-9
on page 3-16.
Based on the distance
between each layer, determine
the length needed for the
cables between the layers.
Table 3-9. Number of Cables Required for Clustering
Connection
Cable
Description Notes
One
Zone
Two
Zones
Three
Zones
Node
interconnect
NonStop
S-series
servers only:
SMF cables
with an LC
connector and
an SC
connector
For each node, two
cables are required to
connect to the 6780
switch.
2 to 64 2 to 128 2 to 192
Layer
interconnect
MMF cables
with two LC
connectors
1 layer 0 0 0
2 layers 8 16 24
3 layers 16 32 48
4 layers 24 48 72
Zone
interconnect
Either SMF or
MMF cables
with two LC
connectors
1 layer 0 8 12
2 layers 0 16 24
3 layers 0 24 36
4 layers 0 32 48
Note: If you use the long-distance option, the zone-to-zone connections differ from those
shown in this table. See Appendix G, Using the Long-Distance Option
.