ServerNet Cluster Manual

Planning for Installation
ServerNet Cluster Manual—520575-003
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Planning for Power
Planning for Power
Power planning for the servers and their peripheral equipment (for example, tape
drives, disk drives, and system consoles) is the same whether or not the server is a
member of a ServerNet cluster. Because external ServerNet fabrics use fiber-optic
cable, each server is electrically isolated from transient signals originating at another
server. For power planning information, refer to the NonStop S-Series Planning and
Configuration Guide.
You need to plan for the power requirements of each cluster switch. For fault tolerance,
HP recommends that the dual power cords provided by the AC transfer switch be
plugged into separate AC power sources.
Table 2-7 describes power requirements for the cluster switch. For more information,
refer to the ServerNet Cluster 6770 Hardware Installation and Support Guide.
Figure 2-9. ServerNet II Switch Extended for Servicing
Table 2-7. Cluster Switch Power Requirements
Characteristic Range
AC input voltage for U.S. and Japan 100-120 V ac, 50 Hz/60 Hz, 4.0 A
AC input voltage for Europe 200-240 V ac, 50 Hz, 2.0 A
Power consumption (maximum) for
cluster switch (UPS batteries
charging)
400 watts
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