June 16, 201610 yr Having my first power outage right now. Been out for at least 20 mins. Ups says 60 mins left. I have it set to shutdown with 20 percent or 15 minutes remaining on battery. Anything else I should do? I kinda want to let it go and make sure it works automatically. Any chance my docker containers running will hang and prevent docker stoppage? Other news: My router is on the ups and we have fiber to the house so my external servers are all still available! I figured whatever hardware converts from fiber to cat5 would die with the power outage... Weird huh? Sent from my SM-N910V using Tapatalk
June 16, 201610 yr Author Auto shutdown went smoothly! It didn't shutdown the ups like it's set to, though. Ups has a scheduled shutdown showing in about 50 mins. Wonder if the shutdown trigger from my server just started some default shutdown timer? Sent from my SM-N910V using Tapatalk
June 16, 201610 yr Community Expert Auto shutdown went smoothly! It didn't shutdown the ups like it's set to, though. Ups has a scheduled shutdown showing in about 50 mins. Wonder if the shutdown trigger from my server just started some default shutdown timer? Sent from my SM-N910V using Tapatalk What brand and model is your UPS? My Cyperpower UPS does NOT shut itself down after the server shuts down. But I don't have the BIOS set to reboot the server on power application in any case so no harm is done. apcuspd is written to the APC specification and I believe it works correctly with that brand. Other UPS manufacturer's have reversed engineered the APC signaling spec's and implemented those parts that they think are important. EDIT: I have my time on battery set to 30 seconds. My reasoning is that in my area if the power is out for more than that period of time, it will probably be out for a minimum of a couple of hours.
June 16, 201610 yr 30 seconds seems a bit short ... I've seen a lot of 1-2 minute outages over the years. I have mine set for 5 minutes, which eliminates shutdowns for those kind of outages, but still shuts things down fairly quickly. I don't like using a battery % for the shutdown parameter -- percentages can be very unreliable, especially once the battery drops below about 30% or so. I want to be CERTAIN the UPS has enough power for a clean shutdown !!
June 16, 201610 yr Community Expert 30 seconds seems a bit short ... I've seen a lot of 1-2 minute outages over the years. I have mine set for 5 minutes, which eliminates shutdowns for those kind of outages, but still shuts things down fairly quickly. I don't like using a battery % for the shutdown parameter -- percentages can be very unreliable, especially once the battery drops below about 30% or so. I want to be CERTAIN the UPS has enough power for a clean shutdown !! I live in a major US City about a mile from a huge power substation. (In fact, in 1958, a major US corporation built a plant directly across the road from that substation that eventually employed 12,000 people! The power lines were run underground from the station to the plant to lessen the possibility of a power outage. I can remember only one time that the power was out in the twenty-eight years that I worked there!) I have perhaps three outages that have lasted longer than thirty seconds in the past eleven years that I have lived here. The last one occurred when an oversize load (being moved legally) 'hooked' a CATV cable that was running across the road and snapped a power pole off, dragged it some distance, breaking every wire on the pole. It created a major traffic jam and we were out for about four hours. At my previous residence, we would get an occasional thirty second to two minute outage that would occur during a beautiful blue-sky work day. I finally figured out that the power crews would knock down a major circuit by pulling a breaker so they did not have to make the final hookup for a new residential transformer installation on a 'hot' circuit! So a lot depends on each person situation as to how long to have the server run on the UPS. The important thing is to realize that in most cases there will be a reasonably short period of time for the average outage and once that time is exceeded, the server should be shutdown. Then when that battery is four years old, it will still last long enough to do a proper shutdown.
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