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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...
NAS UPS has three implementation ways, they are respectively local USB UPS, remote USB UPS and SNMP UPS. The first two are connected via USB cable, the cable will connect UPS's port and NAS USB port. The third way - SNMP UPS, is through the ethernet, and must ensure the NAS and UPS in the same network segment.
If you choose local USB UPS, NAS will add records automatically, you can set shutdown threshold.
If you choose remote USB UPS, you will add this record manually, enter the IP address of the local NAS.
If you choose SNMP UPS, you will add this record manually, enter name(UPS)/Address(UPS' s IP address)/Community(public)/MIBs(specific models).
Amidala wrote:
NAS UPS has three implementation ways, they are respectively local USB UPS, remote USB UPS and SNMP UPS. The first two are connected via USB cable, the cable will connect UPS's port and NAS USB port...
Not quite.
-The local UPS is connected via a USB cable that runs from the UPS to a ReadyNAS USB port. This uses a package called NUT (Network UPS Tools).
-You can also use share this local UPS - using it to protect a second (or third) "remote" NAS. These aren't very remote (they need to be powered from the same UPS). If you are sharing, the remote NAS all monitor the UPS via the local NAS. The remote NAS get their monitoring information over ethernet (from the local NAS). This remote monitoring also uses NUT, but the remote NAS are not using USB.
-If the UPS supports SNMP, it will have an ethernet connection to your network. These are usually fairly large UPS, intended to protect rack(s) of server equipment.
Whenever you are using ethernet to monitor a UPS, the UPS also needs to protect the ethernet equipment on the path. With a shared USB UPS, those are the paths between the local NAS and all the remote NAS. With an SNMP UPS, those are the paths between the UPS ethernet card and all the equipment that is monitoring the status of that UPS.
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