Dear all,
I have recently added more HDD to my FreeNAS setup (total of 6 HDD nows) and though that upgrading fans with a better temperature control via PWM would be good. I went for Noctua NF-A9 and NF-A14. I have active CPU cooling (CPU_FAN1), which leaves me two fan sockets on the MB: REAR_FAN1 and FRNT_FAN1.
Currently rear fan has 140mm exhaust attached, whereas front fan takes two 92mm via y-cable, which of course takes only one of them with 4 pin connection (i.e. with PWM) and the second one without. I must admit that is something I have not though through before upgrading the fans ;-(
In case someone is running the same MB and case, I would appreciate any advise on how to approach the fan setup to keep good cooling without running fans at full speed.
It looks like I have the following options:
1. Control fans via Bios "Smart" option. Perhaps set fans set to spin 100% at around 55 C CPU temperature and do linear decrease to around 30 C CPU and about 30% of speed?
Given the y-splitter is used with the two front fans, I am not sure what would that do to the second one, which does not get the 4-th pin? Does it run full speed always?
2. Alternative could be to connect two front fans to MB and use Node 304 to control the exhaust fan via the L/M/H switch.
3. I would love to adopt some fan control scripts like this but I don't think anyone hacked it work with my MB. My understanding is one would at least need to figure out `ipmitool raw` commands. There is some discussion in the unraid forum for E2C226D2I, but could not find anything for E2C236D2I. There would be, of course, more to be adjust in that perl script, but should be doable according to this comment.
So far, looks like (2) + (1) is the best I can do with the given hardware. Anyone follows this approach? Any hints on a reasonable setup of "Smart" option in Bios?
p.s. In the retrospect, I should have probably gone for the Supermicro MB and control all 4 fans via PWM, but this train has left few years ago.
EDIT: (3) might be quite doable, I checked that I can control fans speed via
I should give a closer look at the script by Stux, https://www.ixsystems.com/community...in-response-to-hard-drive-temperatures.41294/ would probably be even better starting point.
Regards,
Denis.
I have recently added more HDD to my FreeNAS setup (total of 6 HDD nows) and though that upgrading fans with a better temperature control via PWM would be good. I went for Noctua NF-A9 and NF-A14. I have active CPU cooling (CPU_FAN1), which leaves me two fan sockets on the MB: REAR_FAN1 and FRNT_FAN1.
Currently rear fan has 140mm exhaust attached, whereas front fan takes two 92mm via y-cable, which of course takes only one of them with 4 pin connection (i.e. with PWM) and the second one without. I must admit that is something I have not though through before upgrading the fans ;-(
In case someone is running the same MB and case, I would appreciate any advise on how to approach the fan setup to keep good cooling without running fans at full speed.
It looks like I have the following options:
1. Control fans via Bios "Smart" option. Perhaps set fans set to spin 100% at around 55 C CPU temperature and do linear decrease to around 30 C CPU and about 30% of speed?
Given the y-splitter is used with the two front fans, I am not sure what would that do to the second one, which does not get the 4-th pin? Does it run full speed always?
2. Alternative could be to connect two front fans to MB and use Node 304 to control the exhaust fan via the L/M/H switch.
3. I would love to adopt some fan control scripts like this but I don't think anyone hacked it work with my MB. My understanding is one would at least need to figure out `ipmitool raw` commands. There is some discussion in the unraid forum for E2C226D2I, but could not find anything for E2C236D2I. There would be, of course, more to be adjust in that perl script, but should be doable according to this comment.
So far, looks like (2) + (1) is the best I can do with the given hardware. Anyone follows this approach? Any hints on a reasonable setup of "Smart" option in Bios?
p.s. In the retrospect, I should have probably gone for the Supermicro MB and control all 4 fans via PWM, but this train has left few years ago.
EDIT: (3) might be quite doable, I checked that I can control fans speed via
Code:
ipmitool raw 0x3a 0x01 0xAA 0x00 0xCC 0x00 0xEE 0x00 0x00 0x00 AA: CPU_FAN1 (PWM value) CC: REAR_FAN1 (PWM value) EE: FRNT_FAN1 (PWM value) 00h -> smart 01h-64h -> manual fan mode(1%~100%)
I should give a closer look at the script by Stux, https://www.ixsystems.com/community...in-response-to-hard-drive-temperatures.41294/ would probably be even better starting point.
Regards,
Denis.
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