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ReadyNAS RN 204 and UPS
Hi I have recently purchased a RN 204 and looking to ad a UPS. Quite frankly I find all the information rather confusing .... probably says more about me than the info! All I want is a UPS to protect ...
I have two CyberPower units: CP1350AVRLCD and CP1500AVRLCD. Both work with ReadyNAS. I use the 1500 to protect the RN202 and a nearby PC (the Nas is set up to do a graceful shutdown, I never bothered to do that with the PC).
The simplest use case would be to get a UPS, hook the NAS power cable to the UPS and connect a USB cable (the USB cable probably would be provided with the UPS) from the UPS to one of the USB ports on the NAS. Note the port on the UPS must be a USB port (we don't support using serial-to-usb cables). The monitoring of the battery level in the UPS etc. will occur over USB.
There is no need to get a UPS that is managed via SNMP.
If you have multiple NAS you can share the UPS connected via USB to one with the other over your network (obviously the power for both would need to be connected to the UPS and the power for the router/switch would need to be as well for this to work). You can even share the UPS with a PC.
Personally I use a APC UPS, but most UPS units should work.
- Hi mdgm, thank you. Sorry for my ignorance, but if there is monitoring via a USB doesn't that require some software on the USB, and hence must be compatible? Regards Stephen
It does need to be compatible with NUT (Network UPS Tools) which we run on the NAS.
As for sharing the UPS over the network with a Windows PC whilst this article is written for an older product this works similarly: http://home.bott.ca/webserver/?p=466Thank you for your resposne. I do not want to share the UPS with a PC, just want to keep it simple.
Your respose however highlights my issue that there is some confusion. The Netgear website (see my original post) makes it clear that," When any UPS battery is low or when a power failure occurs, the ReadyNAS automatically shuts down gracefully."
This suggests three things:
1. that a USB connection is not required.
2. that compatability with NUT is not and issue.
3. that the NAS is monitoring the power supply without a USB and hence can a drop in power, i.e. low power status.
(I am not usre of the iinplication of 'power failuire' becuase I would have assumed that in a power failure the NAS stops working and cannot gracefully shut down.
However if a USB connection is used then and only then does compatibility with NUT become any issue. However I am not sure what advantages using nUT bestows on the likes of me! Except that it enables email alerts,
There thus seems to be two options:
1. Use any UPS and not manage it via the NAS. This still gives you the graceful shut down.
2. Use a ReadyNAS NUT compatible UPS and manage it via the NAS.
The web page empasis any UPS by italising the any --- this is why I think there are the two options.
The UPS I am considering is a PowerShield Defender (an Australian product) ( http://powershield.com.au/powersheild_product/defender/ ) However based on your earlier post I am in the process of looking at the alternative if iI can source one locally.
Again thank you
Cheers
Stephen
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