Frequently Asked Questions - HP J2962A Installation And Reference Manual

Frequently Asked Questions

The following table lists questions and answers about the Redundant Power
Supply:
Question
What is the difference between a UPS and an RPS?
Should I keep my device's AC power cord connected?
I have only one device connected to the RPS. What would
happen if I connected only one AC power cord to the RPS?
If I connect a DC cable to DC Power Output 1 and an AC
power cord to AC Power 2, will the device receive power?
If I connect two devices to the RPS, do I have to use any
particular DC output connectors?
Do I have to plug both AC power cords into different AC
power sources?
Answer
A UPS (Uninterruptible Power Supply) is an external
power backup device. The UPS serves as a battery
backup, so that if your AC power source fails (as in a
brownout or blackout), the UPS will still provide power. To
order an HP UPS, call 1-800-538-8787.
An RPS (Redundant Power Supply) is an internal power
backup device. Each component of an RPS is duplicated
(redundant), so that if one power supply component fails
the RPS will still provide power.
No. This configuration is not supported by HP.
You will have redundant DC power but not redundant AC
power.
Yes. However, you should connect both RPS AC power
cables to two separate AC power sources for maximum
redundancy.
No. Pick any two DC Output connectors.
We recommend that you connect each AC power cord to
a different AC power source but it is not required.
How the RPS Works
11