Back UPS 700 Pro 1 of 3 won't work..

Anonymous user · ‎2021-06-29

We just got 3 new APC BackUps 700 PRO units.

The first server crash after installing these was attributed to the fact that the "master" plug was not in use during a power outage.

We took the server down and put it on a power bar connected to the "master" plug (on the battery backup side), and we stuck a wireless router on the same power bar to make sure there's always a power load.

At this point the person doing the plugging still didn't notice the front panel of the UPS shows a 0% load level, and the next power failure crashed the connected server a second time.

!http://i.imgur.com/hsGwd.jpg!
!http://i.imgur.com/GXXDB.jpg!

Seems like we've got 1 dud out of the three? Unless someone knows a problem I haven't considered... ?

BillP · ‎2021-06-29

Ah. Do you have any idea how does the redundant power supply works on that computer? Like do they both work at the same time or are they configured to pull 50% each? Ideally if you have this kind of setup, both PSU should be on two different power sources so that if one fails the other one will act as a backup.

See Answer In Context

BillP · ‎2021-06-29

Hello Ryan,

I would like to know if these loads has been tried on the other 2 UPSes. If it is, how many bar was lit on the load graph? By any chance, do you have a computer that has APC PowerChute Personal Edition? This would help us see if the software is detecting or would show the amount of load that is attached to the UPS. I guess you have also tried different kind of loads on this UPS, am I right?

Anonymous user · ‎2021-06-29

!http://imgur.com/t8uOX.png!

4 watts! Wooo..

Didn't even see that last time I had it connected.. I swear it was at zero.. I mean there's no way that a Dual core PC running as a file server with 4 HDDs, an external HDD, and a WiFi router are only taking 4 watts?

But then.. when I plugged in a 19" CRT and a spare PC based firewall box into the same power bar the server's on, the load did come up to ~117 watts.. ? Seems really low still?

I'll see if we can get everyone to go for lunch at the same time so I can try a simulated power failure on the UPS.

_*EDIT:*_ Oh man.. 1st rule of IT .. I should know this one.. *DO NOT TRUST YOUR PEERS*.. The freaking server is dual PSU and the active PSU power cable is running through a rat's nest off to another power outlet. My guess is that the secondary PSU is faulty or something and the fellow that did this figured they shouldn't be hooked to the same power source? I have to assume there was some logic to it and he's not just a total moron otherwise I'd murder him with my bare hands right now. 😉

BillP · ‎2021-06-29

Ah. Do you have any idea how does the redundant power supply works on that computer? Like do they both work at the same time or are they configured to pull 50% each? Ideally if you have this kind of setup, both PSU should be on two different power sources so that if one fails the other one will act as a backup.