Competitive Cross Reference

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Things to consider when comparing models

Power rating+
UPSs are typically rated in volt-amperes (VA) and watts. Watts measures real power and is the key rating. For example a UPS rated at 1000 VA / 900 watts provides one third more power than one rated at 1000 VA / 600 watts. Check out this Professor Wattson video for more information.

PDU power levels are typically measured in kilowatts (kW). Be sure the power levels of the PDUs are the same.
Do the UPSs or rack PDUs you’re comparing have equivalent software capabilities? For example, if integration into VMware vCenter is a priority, be sure the UPS or rack PDU can do it. Price can be impacted if you require a network card, so verify that the price includes one.

Specific to rack PDUs, are you comparing the same functions (i.e. Basic, Metered or Managed)? Each function comes with different features, some allowing you to monitor and control either at the branch level or outlet level.
Are the warranties for the UPS and/or the PDU the same duration? How long does the warranty cover the UPS batteries? Read more about the Eaton three-year warranty.
Rack height+
When evaluating equipment, are you comparing the amount of rack space required to hold it (U height)? For example, choosing a 1U UPS instead of a 2U model may allow you to fit another server in your rack.

Additionally, rack PDU form factors come in either 1U/2U or 0U strips which are vertically mounted and don’t take up any valuable rack space.
Voltages and connections+
Be sure the input and output voltages are the same. For example, a 208V UPS will cost more than a standard 120V UPS. Do both UPSs and/or PDUs have the same input plug? Does it match your wall socket? Does each UPS and/or PDU have the same quantity of output receptacles? The same type? Be sure the UPS and PDU has enough output receptacles and that they’ll accommodate the power cords of your servers, etc.