SC1000 & Proliant ML350 G5 Redundant PSU

[Anonymous user]

Hi,

I came across a previous thread that answered a question I had about the SC1000 buzzing while on battery. However, I've had another problem where I've had to replace the redundant PSU on the Server twice. The equipment is kept at a Hotel where they have a standby generator that kicks in when the mains power goes offline. Could there be a problem with this configuration that causes the redundant PSU to fail? I was getting frequent "Extended Undervoltage" messages, almost 1 a day but these have stopped. It might be a coincidence but both times the generator has kicked in I've had to replace the PSU.


thanks.

[TheNotoriousKMP_apc]

You may also want to take into consideration that the output of the UPS in the time when it's on battery is step-approximated, which may not be ideal for such a high-end server. When utility goes out, the UPS goes on battery, outputting the step-approximated wave, until the generator is up and running. Then it should be capable of running online with the generator power provided.

[BillP · Accepted solution]

Following what Notorious said, you would likely need a UPS that outputs a simulated sine wave such as a SUA1000 (http://www.apc.com/resource/include/techspec_index.cfm?base_sku=sua1000)

That SC1000, while it communicates as verbosely as the SUA1000, can only produce a stepped or modified square wave which likely doesn't jive with the Proliant's power supplies.