That's a good point, though if you are running your breakers that close I think you have bigger problems, as a power outage, however unlikely, could cause your equipment to not come back up at all. Software updates that reboot several servers in quick succession could also cause a breaker to trip under those circumstances. Unfortunately, there's no way to tell how close a breaker is to tripping without tripping it. Breakers may have amp meteres and a rated size, but the actual load before tripping is +-20% for common models, meaning a 20A breaker may trip as low as 16A.
On 2017年10月11日 12:58, Matt Harris wrote: > Another thing to remember - and I've actually seen breakers tripped on > PDUs due to heat before because of this - is that it's going to spin > all of your fans harder to keep internal temps down if the ambient > temp is higher. This will increase your power draw, which means that > if you're paying for metered power by usage, you're going to pay more > - those fans really do add up in terms of power. In extreme cases, you > can draw too much power and trip a breaker on a PDU because every host > in a rack, or especially those towards the top, are spinning full > tilt. It's not a good condition and one that you should force them to > correct. > > > On Wed, Oct 11, 2017 at 11:54 AM, Zachary Winnerman > <zacharyw09...@gmail.com <mailto:zacharyw09...@gmail.com>> wrote: > > I recall some evidence that 80+F temps can reduce hard drive lifetime, > though it might be outdated as it was from before SSDs were around. I > would imagine that while it may not impact the ability for a server to > handle load, it may reduce equipment lifetime. It also could be an > indication that they lack redundancy in the case of an AC failure. > This > could cause equipment damage if the datacenter is unattended and > temperatures are allowed to rise. > > > On 2017年10月11日 11:45, Keith Stokes wrote: > > There are plenty of people who say 80+ is fine for equipment and > data centers aren’t built for people. > > > > However other things have to be done correctly. > > > > Are you sure your equipment is properly oriented for airflow > (hot/cold aisles if in use) and has no restrictions? > > > > On Oct 11, 2017, at 9:42 AM, Sam Kretchmer > <s...@coeosolutions.com > <mailto:s...@coeosolutions.com><mailto:s...@coeosolutions.com > <mailto:s...@coeosolutions.com>>> wrote: > > > > with a former employer we had a suite at the L3 facility on Canal in > > Chicago. They had this exact issue for the entire time we had > the suite. > > They kept blaming a failing HVAC unit on our floor, but it went > on for > > years no matter who we complained to, or what we said. > > > > Good luck. > > > > > > On 10/11/17, 7:31 AM, "NANOG on behalf of David Hubbard" > > <nanog-boun...@nanog.org > <mailto:nanog-boun...@nanog.org><mailto:nanog-boun...@nanog.org > <mailto:nanog-boun...@nanog.org>> on behalf of > dhubb...@dino.hostasaurus.com > > <mailto:dhubb...@dino.hostasaurus.com><mailto:dhubb...@dino.hostasaurus.com > <mailto:dhubb...@dino.hostasaurus.com>>> wrote: > > > > Curious if anyone on here colo¹s equipment at a Level 3 facility > and has > > found the temperature unacceptably warm? I¹m having that experience > > currently, where ambient temp is in the 80¹s, but they tell me > that¹s > > perfectly fine because vented tiles have been placed in front of all > > equipment racks. My equipment is alarming for high temps, so > obviously > > not fine. Trying to find my way up to whomever I can complain > to that¹s > > in a position to do something about it but it seems the support > staff > > have been told to brush questions about temp off as much as > possible. > > Was wondering if this is a country-wide thing for them or unique > to the > > data center I have equipment in. I have equipment in several > others from > > different companies and most are probably 15-20 degrees cooler. > > > > Thanks, > > > > David > > > > > > > > --- > > > > Keith Stokes > > > > > > > > > > > > > > -- > Matt Harris - Chief Security Officer > Main: +1 855.696.3834 ext 103 > Mobile: +1 908.590.9472 > Email: m...@netfire.net <mailto:m...@netfire.net>
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