I think unplugging one power supply cord results in screaming power fans as the remaining power supplies run the entire system. Loudness depends on if it's a 1-of-2 or 2-of-3 arrangement!
How is the system running now? I'm assuming the failed UPS is in 'bypass' mode.
How good is the electrician? Can the new system be wired in and ready so the actual cutover will only take a few minutes?
Paul E Musselman
PaulMmn@xxxxxxxxxxxxx
-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> On Behalf Of Jerry Draper
Sent: Thursday, November 01, 2018 3:31 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: redundant power supply - moving one cord
Thinking that redundant power supply means that we can unplug one power
supply cord without causing any power issues on the system.
We lost one of our UPS systems and will replace it in a few days.
Jerry
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