NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
RN104 shutdown because disks exceed safe temperature
Hello, I'm using a RN104 at firmware level 6.10.3. The ReadyNAS is equipped with 4 times Hitachi HUA721010KLA330 1TB SATA drives, all 4 drives building one RAID5 X-RAID volume. Today the RN104 sh...
Hello Stephen,
many thanks for your fast response!
I confirm that the disk were really warm as the air coming out of the RN104 was really warm. When I powered the RN104 again ... some minutes after the shutdown ... the inner disks were at about 60°C and the outer disks at about 50-54°C.
Swapping the disks would be an option I can try. Connecting a PC may be an issue as I use Apple at home.
What about the coexistence with the defrag processes? I'm using the RN104 as backup device only (about 99%), maybe I'm using it to share single files. Never had an issue with that.
I'm running defrag, scrub, balance and disk test maintenance on a regular base, but the issue only occured directly after defrag so far.
Is it possible that, when the parallel running defrag ends, the fan controlling process is halted, too? By chance I mean.
Any way to find out why the defrag is started twice?
Any way to find out if the fan controlling process is in trouble?
HolgerGT86 wrote:
What about the coexistence with the defrag processes? I'm using the RN104 as backup device only (about 99%), maybe I'm using it to share single files. Never had an issue with that.
Normally the disks will get hotter under heavy use. So if the defrag (or any other task) has a lot of work to do, I'd expect a temperature rise. But the NAS fan control should be enough to prevent the actual overheating.
It is conceivable that the fan got damaged when you cleaned it. You should definitely be hearing the fan kick into high gear as the temperature goes up. Maybe move the NAS to a new spot where that would be easier to hear??? You should also be able to feel the air flow, esp. when it ramps up.
X86 NAS (RN300 series and up) do have performance graphs that include SYS and CPU temps. But not the RN100 and RN200 familes.
If you enable ssh, then smartctl might give you some temperature history
root@NAS:~# smartctl -x /dev/sda smartctl 6.6 2017-11-05 r4594 [x86_64-linux-4.4.190.x86_64.1] (local build) Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === ... SCT Temperature History Version: 2 Temperature Sampling Period: 1 minute Temperature Logging Interval: 1 minute Min/Max recommended Temperature: 0/65 Celsius Min/Max Temperature Limit: -40/70 Celsius Temperature History Size (Index): 128 (17) Index Estimated Time Temperature Celsius 18 2020-04-08 09:18 35 **************** ... ..(126 skipped). .. **************** 17 2020-04-08 11:25 35 **************** ...
This might not be available with your disks though.
You can also get the current temp
root@NAS:~# smartctl -a /dev/sda | grep Temperature_Celsius 194 Temperature_Celsius 0x0002 203 203 000 Old_age Always - 32 (Min/Max 13/45) root@NAS:~# smartctl -a /dev/sdb | grep Temperature_Celsius 194 Temperature_Celsius 0x0002 185 185 000 Old_age Always - 35 (Min/Max 14/48) root@NAS:~# smartctl -a /dev/sdc | grep Temperature_Celsius 194 Temperature_Celsius 0x0022 119 105 000 Old_age Always - 33 root@NAS:~# smartctl -a /dev/sdd | grep Temperature_Celsius 194 Temperature_Celsius 0x0022 121 108 000 Old_age Always - 31 root@NAS:~#
It's easy to redo these commands w/o retyping them - you use the up arrow on your keyboard to see the previously entered commands, and then press enter to re-execute it again.
BTW, you might find that the disks will run a bit cooler if you open the front door. That's not a fix of course.
StephenB wrote:BTW, you might find that the disks will run a bit cooler if you open the front door. That's not a fix of course.
I did that already after bringing the RN104 back up. I closed it again because now the temperature is stable again. But thanks for letting me know!
No warnings about low fan speed? That's what it sounds like -- that the fan is failing. The drive temperatures will rise dramtically during heavy use like a defrag if the fan't not running. Is the back of the NAS close to the wall, or is the NAS close to anything (bookcase wall, another NAS, etc.) on the top or side? Those can make the heat rise, too. Space behind the NAS can be more important than some realize, as many fans do not work well with the high back pressure that can cause. Restrictions around it can insulate it. But more importantly, either of these can cause the air to re-circulate from exhaust to intake and not mix with surrounding cooler air much.
I checked the fan and it is running fine. The speed control is working as expected - now. The disk test just completed successfully. Temperature was about 40°C +/- 6°C all the time. The fan running at 27xx/ 3233 RPM.
The issue is that I had no chance to control the fan speed at time of issue so far.
This is, because I notice there's an issue when I receive the eMail that the disks are getting warm. Warning level and shutdown are all happening within 60 seconds, so no chance for me to run down into the cellar to check what's going on. When I'm down in the cellar the RN104 is already powered off.
I scheduled another defrag for tomorrow, trying to recreate the issue.
I'll try of the commands you provided. Maybe I can get a script running to monitor temperature and fan speed during the defrag.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
