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February 26th, 2019 18:00
Fan speed of PowerEdge T640
We have purchased PowerEdge T640. After installed 16 pieces Samsung SSD instead of orginal dell harddisk, fan speed is running 100% all the time. The firmware of idrac has been updated to the latest version 3.21.26.22. It is too noisy. There is no any setting in the idac menu for this issue. Any solution to solve this problem? Thank you in advance.
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savvy2
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February 27th, 2019 05:00
so is the fan loud with all 16 SSD's unplugged, from the controller,? (is there a raid controller here)?
The DELL systems have firmware, that not only senses heat build up, but also sees if you have added cards to the system (raid cards do run hot, as doesr hot 15k HDD, the latter you dont have. the former I don't know yet.
it runs fans based on these facts and more ( I do not know them all (rules here) but can't read the open source in the firmware either (lol)
I'd look in the logs of the drac and see if there are issues there, for heat or reasons for high RPM fans.
also if you run the system with covers off the system runs fans at max, so close it up and test it.
Even to the point of stripping the whole thing of all options and drives, close case, and give it 30mins.
to slow the fans down.
in fact some Dells run fans super fast ("self preseveration mode\') when first turned on, the lower RPM
of all fans when it is sure all temperature sensors are reading correctly , not changing fast, (rising) and stable.
then computes new RPMs AND LOOPS here on these inputs (thermal sensors)
does that help?
Mark 1982
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February 27th, 2019 14:00
Garrick Wong
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February 28th, 2019 17:00
We are using Dell H740P Raid controller and also 16 pieces samsung 850 pro 2TB SSD
Dell-DylanJ
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March 5th, 2019 11:00
Savvy2 is sharing some quality information, kudos to him/her. The iDRAC does function as a fan controller, and it sets fan speeds based on the information that it gets from the firmware running the various bits of hardware. The Samsung SSDs aren't validated, so the iDRAC isn't going to have the necessary information to cool them. As a result, it's spinning the fans up to max to try to provide adequate cooling. To my knowledge, there is no way to alter that. The only fan offset option that I am aware of would be to increase air flow, not reduce.
savvy2
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March 13th, 2019 06:00
DylanJ
that is very good information, now I learn it looks for certified, DELL SSD.
I can see why to protect the alien SSD from heat damage (and not junk change$$ x16). Thanks for that bit of knowledge!
one solution is to move the bank of SSD , to external system.
or buy box that is for making the T640 silent , from the outside of the box. many makers and sellers have this.
Keep in mind heat is the #1 killer of electronics,.dell is only doing their job to not allow damage,. save data, save from damage.
one more, go into BIOS main, see power management settings set it to minimum power mode.