NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
herbg
Jul 05, 2021Tutor
RN21400 Suddenly Goes Offline but is actually running
My RN21400 with 4 4TB drives has been running flawlessly for many years now. However, I've suddenly lost the ability to keep the NAS online. Although the NAS is running, shares and folders cannot...
- Jul 07, 2021
I believe that others have found port 2 to do better than port 1. The manual labels the upper port 1 and the lower 2, but the upper is eth1 and the lower is eth0, so there may be some confusion regarding whihc port is best. Of course, that could be because they used port one until it overheated too many times and started to become damaged, then moved to port 2.
On mine, it doesn't seem to matter a lot. But i think my issue is more with 3.3VSB than the NIC.
Two ports can be bonded if you have a router capable of supporting that. Each of the two ports could also be connected to separate networks. If one fails, you don't have a brick since you still have the second to use. And they can also be used to implement OpenVPN using two ports, one of which does not get an IP assigned, which is more efficient than the single port implementation (I did just that before I moved over to ZeroTier since my router didn't support it, though not on a 212).
Here is something odd I just noticed that may or may not be related. I went to see which port I'm currenlty using on it and while the eth0 icon was color and eth1 was greyed out, both showed the same IP address and a 1GB connection. I powered down and switched from the lower to the upper port, and it was normal, eth0 showed an IP of 0.0.0.0 and a connection speed of 0MBPS while eth1 showed the proper IP and 1GB speed. I powered down and went back to using the lower port, and it was back with both showing the IP address and connection speed. It could just be a bug in the GUI, or it may be meaningful.
Through all of this, BTW, it powered on and off just fine.
StephenB
Jul 05, 2021Guru - Experienced User
The next time it happens, try also looking at the status with RAIDar. https://kb.netgear.com/20684/ReadyNAS-Downloads I suspect it will also show offline, but it would be good to confirm.
It might also be useful to ping the NAS from your PC and see if it responds to ping.
I suggest downloading the full log zip file. You can ask the mods ( JohnCM_S and Marc_V ) to analyze it for you.
The way to do that is sent them a PM (private message) using the envelope icon in the upper right of the forum page. Upload the log zip file to cloud storage (google drive, dropbox, etc). Include a download link in the PM and a link to this thread.
Don't post the download link publicly, there is privacy leakage when you do that.
- herbgJul 05, 2021Tutor
Hi Stephen:
I was thinking the same thing about RAIDar and it does not show the RN214 when it goes offline. Only after rebooting
with a hard unplugging of the AC does it show up.
Downloading full LOG files and will send as per your instructions.
Thanks,
Herb...- SandsharkJul 05, 2021Sensei - Experienced User
What is the status of the Ethernet LEDs on the unit when it goes offline? The power circuit and NIC have a separate power source created from the input 12V. Simultanious failure of the power on-off and NIC can be related to that. That it takes some time could mean the problem with that voltage source is heat related. I don't know if the power button has a second set of contact for activating the display or not.
But both can also be related to something within the NAS crashing. Looking in the downloaded logs might help pinpoint something.
Have you tried both Ethernet ports on the unit?
Another thing to try is to remove the drives and install just a spare one (with notiing on it you care about, as it will be wiped) and see if the same thing happens. If it does, then it's unlikely to be firmware related and more likely to be hardware.
- StephenBJul 05, 2021Guru - Experienced User
What apps are you running?
Another simple test is to turn them off.
Related Content
NETGEAR Academy

Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!