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Power cable connections between rack PDUs and servers are automatically calculated by default.
Turning off the automatic cable connections allows you to overrule the default settings to manually configure cable connections. This is useful for example when configuring an already running data center with a power configuration that is not the most efficient. Once you have modeled the data center in Data Center Operation, you can use the capacity features to identify and optimize the design.
Configuration
Toggling cable connection settings is available in Tools>Preferences>Cable Connection if you have Data Center Operation: Capacity installed.
- Open Tools>Preferences>Cable Connection.
- Define the default power connection setup for a server when it is added to the layout from Genomes.
In Cable Connection when moving a server, select Auto calculate cable connection or No cable connection. - Define the default power connection setup for a server when it is added to the layout from another position in the Rack Layout or Navigation.
In Cable Connection when moving a server, select Auto calculate cable connection or No cable connection.
Usage
When you configure manual cable connections, it is important that you remember that any server you add or move to a rack must be manually connected to a rack PDU immediately. Otherwise, you will see too high load values because of the way the system works. If the system does not know about the phase connections, it will assume the server draws the load on all phases in a 3-phase setup and triple the load to ensure the UPS can handle the load.
Note
If you add equipment using the rack advisor functionality in the Installation Requirements pane, cable connections are automatically calculated regardless of the selection of cable connection preferences.
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