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28288
February 2nd, 2020 14:00
R720 fan speed
Hi,
when first setup my r720 and put the System Mode to Performance per Watt the system was pretty quiet, the fans where running at 1200umin with less workload.
Afterwards I played a bit with custom system modes or performance mode, ending in 12000umin fan speed all the time, no matter what's the temperature.
I put the mode back to Performance per Watt, but the system is keep running with 12000umin, and a temperature of max 30°.
Any idea how I can slow down the fans, or get back to the old behavior where the system was pretty quiet?
Best regards,
Fabian
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fabian1233
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February 3rd, 2020 14:00
Hi Chris,
I simply run the following command using SSH on the idrac:
> racadm set system.thermalsettings.FanSpeedOffset 0
This fixed the problem, the fan's are always quiet, now.
Best regards,
Fabian
DELL-Chris H
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9.6K Posts
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February 3rd, 2020 09:00
Fabian1233,
To start would you confirm what versions your BIOS and iDrac are at currently, as well as the model Processor installed?
Let me know, as your answers will dictate the direction we need to go.
Thanks.
fabian1233
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February 3rd, 2020 09:00
Hi Chris,
thanks for your reply. I'm running on:
Beside it's running iDRAC 7 and confirms no updates are available.
Best regards,
Fabian
DELL-Chris H
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February 3rd, 2020 11:00
Thank you. The fan speed increase to maximum RPMs is working as designed for some processor models, which is required to ensure the long term reliability of those processors. Now for most of the System profile BIOS options, C1E is enabled. Now if the Performance profile is selected, C1E is automatically disabled and cannot be enabled. If the C1E disable feature is not needed, use the Custom profile and enable C1E.
Then let me know if that resolves the fan rpm issue.
fabian1233
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February 3rd, 2020 14:00
I run the following command, and get back to 20% fan speed:
> racadm set system.thermalsettings.FanSpeedOffset 255
The power consume dropped from 190watt to 110watt, just because the fans are slower, while the cpu's temperature is going up by 3 degree in average.
DjDemonD2
2 Posts
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July 7th, 2021 01:00
Hi,
Great fix it certainly quiets down my R720, the fans still ramp up when it gets hot but do not run at full blast from the get-go.
However, every time it reboots the fan control reverts to the standard scheme which is full-power.
Is there a way to issue this command above, at boot?
acedron
2 Posts
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September 22nd, 2021 14:00
Where do you run command at?
Thanks
acedron
2 Posts
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September 22nd, 2021 14:00
What is the procedure for running command i am new to this?
Thanks
DELL-Young E
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September 22nd, 2021 19:00
Hi, thanks for choosing Dell. At this point I believe it's best to have answers from the previous commentators. Also Dell does not have the official guide on offsetting fan on 11 severs so there's nothing much I can comment on. Folks seems to try out. But please know less fanning means higher temperature, which isn't recommended. I'm wondering if you could run command at all but I can't say. Sorry I can't be of help this time. Wish you a good one.
DELL-Shine K
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September 23rd, 2021 02:00
You can SSH to iDRAC IP and run the racadm command
Legioncorp
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3 Posts
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July 27th, 2024 11:42
hi so i tried this and the cmd went through but nothing happened
DELL-Young E
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5.3K Posts
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July 29th, 2024 02:13
Hello the original post goes way back- could you please state in detail as to what kind of issue you were going through and what was done? That would be much appreciated for troubleshooting.
Thank you and have a great one!