So I've run a couple of dedicated mining rigs using GPUs for about 9 months, have recently added one BFL Single with 5 more on the way, a 6 BFL SC Singles coming (whenever they're released lol). To make a long story short, I can't run BAMT or scripts on my boxes, I have to run Windows with system drive encryption. In all the properties I've lived in here in FL there's these once a week at least 1-3 second transient power drops that cause all my hardware to reboot and sit idle until I get physically sit back down at it and get it all started up again. This usually takes 8-16 hours before I can get to it.
So for this reason and with all this BFL hardware coming I finally dropped $200 bucks on an APC BX1500G 1500VA battery backup at my local Staples yesterday. I connected everything up and everything appeared to be working perfectly. However I noticed pretty quickly that one of the GPU miner boxes now crashes (video output just freezes, unit stops mining) every 30-120 minutes. It uses about 180W at load, has a single 5850 @ 915/300 (stock volts) and uses http://www.newegg.com/Product/Product.aspx?Item=N82E16817371033
for the PSU. I've had no problems with that PSU and it work's perfectly. I did notice right when I setup the APC UPS that that PSU makes an odd audible buzzing noise when it's running off battery power.
So my question to you, fellow miners, is why does it do this? I don't understand why it would do this. I haven't had any problems with the HP Slimline tower that the BFL Single is connected to (or the BFL Single itself), or the other self built media server that I run off the same APC unit (it has a 380W SeaSonic PSU). Unfortunately I don't currently have the 7970 in the other dedicated GPU miner box because I'm prepping it for sale. However once I have to stock HSF back on I'll try that out too.
I haven't had a lot of time to look at this issue yet but it's already crashed like 4 times and crashed in the night as well as shortly after I restarted it at 6PM.
Any ideas or suggestions would be appreciated. I have not had a chance to call either APC or Antec yet.
My other major concern is if running this battery backup is going to damage or destroy the hardware I have connected to it - specifically 6 FPGAs (and then 6 BFL ASICs). Running all the ASICs off this battery backup is the primary reason I spent money for it (money I could barely afford).