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Forum Discussion
How does the UPS communicate with my ReadyNAS?
There is a UPS setup option in my ReadyNAS and in the manual it says to setup a UPS either remotely or online. But how does it connect to a UPS itself? Does the UPS need to have an ethernet cable t...
Shutdown threshold is a battery threshold. My choice is 90% for home usage. This mean the battery has 90% power left the NAS will shut down. Full discharging is not useful for the battery. My last battery worked 5 years.
I have second NAS and my checkbox is enabled.
I just use auto. My power is pretty reliable - extended outages are perhaps once every 2-3 years. So the battery almost never drains anyway.
Also, if the UPS is too small, the run time and battery life both suffer. Ny RN526x is protected by a UPS with a 1500VA rating. The NAS estimates a 92 minute run time if the power fails.
StephenB wrote:Also, if the UPS is too small, the run time and battery life both suffer. Ny RN526x is protected by a UPS with a 1500VA rating. The NAS estimates a 92 minute run time if the power fails.
To get a different view, My RN516 and my router are protected by a UPS rated at 650VA and the NAS estimates a 25 minute run time.
I set my shutdown time to 3 minutes as I do not mind a quick shutdown.
I use auto. As the batteries weaken, that should help it chose an appropriate time. With some UPS, the auto parameters can be adjusted using the manufacturer's software. With others, you are just adjusting the decision pont of that software and it doesn't affect anything when connected to a NAS. Some even let you adjust parameters via an LCD display.
With batteries that are nearing end-of-life, that last 10% can go pretty fast. Of course, if your UPS is barely large enough to handle the load, old batteries not might hold up at all. SLA batteries generally work better if not deep discharged. So setting a limit of 90% is probably not the best if you live in an area with frequent outages.
I have had about 2 outages per month. Pretty crazy. My UPS is working well. I think I have it set to 90% so it powers off after about 5 min. I just need to find out if there is a setting that will turn the system back on! I didn't expect to have this many outages.
I just wanted to correct something I said earlier.
Mine is NOT set to 3 minutes but is on 'Auto'.
I was muddling it up with my PC which has an identical UPS, but different software (PowerChute from APC)
The UPS connected to the ReadyNAS and set to 'auto' shutdown my NAS (& Modem & Router) after about 5 minutes which is fine.
Incidently, from memory (so do not necessarily believe it) the 'Auto' is I think 90% anyway. I am not certain that it has any clever algorithm to do anything else, unless it's been added to the OS in the recent updates.
Over 2 years ago I did try for 3 months (on and off) to get the remote control of the UPS to work, so that the more complex control functionality (and history etc) can be implemented with the PowerChute software. In the end I gave up.
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