Solved!
Go to SolutionA
Aleksandar001
1 Rookie
•
2 Posts
4
167025
October 27th, 2017 05:00
Dell PowerEdge fan speed - change fanspeed offset
The BMC/iDRAC in is programmed to set fan speed min/max and adjust values based on factors like ambient temperature and system configuration. Depending on configuration the system may run the fans at higher RPMs regardless of any detected temperature. But...
If you use server at office, the noise become very anoying. If you set Maximum Performance in BIOS (Power Management), there is no way to adjust fan speed because when server start, IDrac set Fan Speed Offset to Max...
Many people advise changing the fans or changing the BIOS, but I found that very risky... The way i used is changing the thermal FanSpeed Offset value in IDrac.
Fan speed and temp before adjusting...
SSH - iDrac...
Get SpeedOffset value:
racadm get system.thermalsettings.FanSpeedOffset
Set SpeedOffset value:
racadm set system.thermalsettings.FanSpeedOffset X
The X values are:
- 0 - Low Fan Speed
- 1 - High Fan Speed
- 2 - Medium Fan Speed
- 3 - Max Fan Speed
- 255 - None
Fan speed and temp after adjusting...
There is also benefit with power consumption. Before adjusting, server used about 250W and now is constantly on 120W...
I used this on PowerEdge R620 but this adjustment can also be used on other Dell servers with noisy fans...
139947
0
Posted October 27th, 2017 15:00
Correction ... the simple act of replacing fans is not risky. Finding a quieter fan that will WORK can be problematic, but not risky.
139947
0
Posted October 27th, 2017 15:00
Many people advise changing the fans or changing the BIOS, but I found that very risky Hmm ... neither of these are "risky" when done correctly.
139949
0
Posted October 27th, 2017 16:00
I agree:) But, if you still have warranty on your server, every modification is risky:)
130031
0
Posted August 22nd, 2018 04:00
hi, how do i access the ssh - idrac console125171
0
Posted October 5th, 2018 02:00
Is this command only available on new RAC? becoz I am using RAC5 can only ssh but dose not work for this command.
119017
0
Posted November 22nd, 2018 04:00
Hi. This solution works great, only issue is that every time I reboot it reverts fans to 100%. Is there any way to make this setting permanent? Thank you.107687
0
Posted March 9th, 2019 01:00
This seems to be an idrac7+ only feature. Idrac6 doesn't recognize the commands... any ideas on if something like this is possible with idrac6 servers (mine's an R510 running the idrac 6 2.92 latest and greatest)
101861
0
Posted May 5th, 2019 03:00
Hey,
You found any solutions?
56806
0
Posted October 15th, 2020 05:00
Hi
can i run this cmds on the R900 ?
DELL-Young E
Moderator
•
5421 Posts
•
37 Points
0
0
Posted March 29th, 2024 07:15
Hello, just adding my humble opinion
The biggest reason for controlling a fan speed would be the noise. You block the fan, the ventilation is not working, which leads the higher temprature, this will make the fan go faster. The turbo boost or the C state- they do not not have a direct relation to the temperature but it does take up much electricity of the CPU so it's expected that it is leading to the fan speed I'm assuming.
Respectfully,
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#IWork4Dell
Did I answer your query? Please click on ‘Mark as Accepted Answer’. ‘Thumbs up’ the posts you like!