Yes. But the problem is, the APC model cannot last that long till you get back and ON back your ELCB. In order to stay longer hr, you need to get bigger size.

The RS600 can last about 1hr+ on my ds409+ include the router modem. By the time I comeback from work, it already shutdown.

APC is the most failsafe.

It will restart when power comes back on to your UPS. See below..

The issue is not this. But when you will going to switch ON back the ELCB.

It works. I have them configured on all my NAS and UPS. I see why it does not work for you. The APC UPS must have a USB cable that support shutdown and the model you have RS600 (based on google search) doesnt have one.



This post has been edited by mintgadget: Jul 28 2013, 09:45 PM

If you got problem with ELCB than that's is different problem. More to electrical problem.

UPS is design to safely power off the machine or cater for a few minutes electrical cut off before the generator kick in.

I know it work. And my APC have been safety shut off and ON the NAS many many time.

Sorry if you don't understand what I said. The original question is from vivre.

The APC have no problem with shut off and ON back the NAS. And you can enable such a function in the NAS. And my NAS have been function in such away for many time.

The ELCB will trip if heavy lightning storm which is common in here. It is not the ELCB got problem. So the APC kick in and do their job. But most of the situation is, the APC cannot last till I comeback and reset the ELCB to resume the NAS running. Without the NAS shutdown. So in order the NAS running without shutdown, have to get bigger size APC to last longer.

Actually got difference between UPS drained and shutting down your NAS and when it has the Shutdown function. If you are running RAID and if your UPS battery has drained, it will set your NAS to safe mode so then it and cut off immediately, like hitting a reset button on your computer. If the NAS does not have this function, it will just power off your NAS without any warning which is not good especially for raid volumes. I have killed several volumes before and it is a b*tch to rebuild them.

I have such an experience before that I didn't use UPS. But lucky nothing happen. But I know it is bad.

The actual situation running is not what you descript. When power cut off, the UPS kick in. But the NAS will run as normal till the safe mode signal from the UPS tell the NAS not much juice left. The NAS start to cease all the operation, write/read to HDD and connection. You can't talk to the NAS anymore in safe mode. Than eventually shut off and the UPS too.

During safe mode too, the NAS will send an email out to warm me that it run on battery at what time. I always know when the power trip from the NAS email and call my family to reset the ELCB when they go home.

maybe slightly off topic here .. does it matter to have pure sine wave compared to digital stepped sine wave ?

Thanks all for the fruitful replies..

Just to make myself clear, for every UPS with USB support, the UPS will shutdown the NAS (during power failure) and turn it back on when the power returns? I am just covering the situation where there is blackout and the ELCB is still OK i.e. no lightning.

Also, whats the different between the safe mode and shutdown? Should the UPS instruct the NAS to turn off as the electricity is not available? Care to clarify the workflow? Based on the replies above, I understand it as below

Blackout -> UPS kicks in -> UPS instruct NAS to enter safe mode -> UPS's battery level reach low level -> UPS instruct NAS to shut down

Power returns -> UPS being charged -> UPS switch on NAS

So is my understanding correct? Thanks!

Dlink DNS-320L can download torrent or not?
what's the different between a NAS and an old CPU like p4 2.0ghz setting up a windows with 4 HDD in it?

Maybe in power consumption?
The only one i can think of.

That's one heck lots of different, one is a working PC and another is a NAS only purpose without direct control (only through web browser).
With a PC you can do much more things than just sharing your files/folders, you can install almost anything as OS and/or software goes and configure it to any environment that fits, not easy as plug-in, power-on and able to start using it right away (NAS with pre-configured software).
But of course if you want to save the space, NAS is great as the built is rather compact compare to even the most compact PC chassis out there.
It's up to you to choose either one that suits you, whether you can pay higher to gain compact, easy to use, worry-less setup or go full DIY with smaller chassis that can be get complicated but you get as flexible as any other form of desktop PC, any OS, any software as you like, and it's cheaper to do so.

thanks you for the enlightenment...
looks like i'll try to build one with my old p4 2.0ghz first and try..

Guys, do know where can find the 2U rack case with the 3.5 hotswap bay?
Besides, where can i get the 2 post frame relay server rack?

Which APC suits best for Synology?

Vivre got list down the model on back page. Choose 1 that suit your budget.

this one for your Synology?
or you have other brands?