Power Sources are simply the upstream suppliers of power to the power panels within your facility. For instance, you may have some panels that come from building/grid power, some that are generator (but not UPS), some from generator + UPS, or simply UPS. What you are doing here is simply defining the basic segmentation for "what if?" scenarios involving power.
Each power source that you define is assigned a unique key, so you can duplicate the source names if you wish. For example, if you had a building with one large generator, but several rooms that draw power from that source, you could define that same source (by name) for each data center.
The table fac_PowerSource houses the data related to power sources, and references the foreign key fac_DataCenter.DataCenterID.
- PowerSourceID - Invisible to users, but is the unique key assigned to each power source. It is referenced as a foreign key by the fac_PowerPanel table.
- Name - The name of the power source, which has no uniqueness requirements.
- DataCenterID - As shown in the image to the right, this is shown as a picklist of defined data centers, but is a foreign key reference to the fac_DataCenter table.
- IPAddress - If this is a source with an SNMP manageable interface, you can enter the IP address here and pull the load periodically. For instance, this may be a management card on a UPS.
- SNMPCommunity - The community string needed to pull data via SNMP from this power source.
- Load OID - The numeric SNMP OID that will return the load in kW for the power source.
- Capacity - The total capacity in kW of this power source.