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[garyhgaryh]

So it prints fine, and shows the UPS status fine - BUT - does it shutdown fine?

how long does it take to shut down after power goes off? Power Went off last night but nas was still on. Had fiance shut it off manually.

[fordem]

That would depend on your UPS, the capacity, the load & the condition of the battery - as I understand it, it's a default NUT (network UPS tools) installation, which looks for two things, the UPS status must be on battery and the battery status must be low - if both are true, that triggers the shutown.

Essentially UPS runtime depends on the load - assuming a battery in good condition, a large UPS with a small load will run for a long time, or a large UPS with a large load will run a short time - you get the idea.

[garyhgaryh]

That would depend on your UPS, the capacity, the load & the condition of the battery - as I understand it, it's a default NUT (network UPS tools) installation, which looks for two things, the UPS status must be on battery and the battery status must be low - if both are true, that triggers the shutown.

Essentially UPS runtime depends on the load - assuming a battery in good condition, a large UPS with a small load will run for a long time, or a large UPS with a large load will run a short time - you get the idea.

The reason I ask is that I want to test the shut down feature of the ups, but I don't want to wait.  Sounds like I have to wait until the battery goes low to see whether or not it shuts down.  Or i can run the battery down first then plug the nas into the ups and pull the plug...

I have an apc 550 if that matters.

Gary

[fordem]

Unfortunately there are APC550's and then there are different APC550's - in fact I am right now distinctly less than happy with APC over the way they have chosen to change their software, but that's another story.

APC has several different product lines - SmartUPS & BackUPS are the most common, they do not use the same communication protocols, and in fact, there appear to be differences in the communication protocols used by different versions of the different lines as well - so that software that works with one SmartUPS will not necessarily work with another.

For safety's sake - I would power the DNS-323 and the PC from a power source other than the UPS (the wall outlet if you have stable utility power), find a load at least 80% of the UPS' capacity - if it's a 350VA UPS something like a 200W lamp (lower can work, it will just take longer to reach a low battery), connect it to the UPS and then unplug the UPS and let it run on battery whilst monitoring the DNS-323 status page.

What you should see is the status change from online to on battery, and then the battery status should reduce - this may or may not be reported, depending on the UPS, the SmartUPS should report it, I don't think the BackUPS do - and at some point the UPS will send the low battery alert, which should cause the DNS-323 to power off.

Ideally the DNS-323 should shutdown a minute or so before the UPS turns off - if the UPS turns off before the DNS-323 does (or the UPS turns off and the DNS-323 doesn't) then you know the test failed.

[garyhgaryh]

Unfortunately there are APC550's and then there are different APC550's - in fact I am right now distinctly less than happy with APC over the way they have chosen to change their software, but that's another story.

APC has several different product lines - SmartUPS & BackUPS are the most common, they do not use the same communication protocols, and in fact, there appear to be differences in the communication protocols used by different versions of the different lines as well - so that software that works with one SmartUPS will not necessarily work with another.

For safety's sake - I would power the DNS-323 and the PC from a power source other than the UPS (the wall outlet if you have stable utility power), find a load at least 80% of the UPS' capacity - if it's a 350VA UPS something like a 200W lamp (lower can work, it will just take longer to reach a low battery), connect it to the UPS and then unplug the UPS and let it run on battery whilst monitoring the DNS-323 status page.

What you should see is the status change from online to on battery, and then the battery status should reduce - this may or may not be reported, depending on the UPS, the SmartUPS should report it, I don't think the BackUPS do - and at some point the UPS will send the low battery alert, which should cause the DNS-323 to power off.

Ideally the DNS-323 should shutdown a minute or so before the UPS turns off - if the UPS turns off before the DNS-323 does (or the UPS turns off and the DNS-323 doesn't) then you know the test failed.

I'll give it a try this weekend....
Thanks fordem!
Gary

[melvynadam]

This discussion was very interesting but ended without a conclusion.

Can someone please confirm that if you connect a USB hub to a 323 you can attach both a UPS and a printer and that the UPS will still do its job of shutting down the NAS.

FYI, there's another discussion over here which also hasn't reached a conclusion.

[gunrunnerjohn]

I'd be VERY interested to see how these experiments came out!  I'd love to have UPS capability added to the DNS-323.  I have it plugged into the UPS, but I didn't want to sacrifice the printer capability to add monitoring.

[fordem]

Come on guys - get your hands dirty - surely you already have a USB hub, either lying around unused or maybe one that could be temporarily appropriated for testing.  Even if you don't they're cheap.

Run your own tests.

[gunrunnerjohn]

Come on guys - get your hands dirty - surely you already have a USB hub, either lying around unused or maybe one that could be temporarily appropriated for testing.  Even if you don't they're cheap.

Run your own tests.

Well gee, if you don't want to test for us, just say so.