Weird issue with HGST drives

TrueNAS General
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Something I never heard you say was how many drives do you have in the drive bays and what make/model is in each drive bay. I am interested in drives not in the removable drive bays as well.

Why do I ask? Because I’m thinking of a reasonable solution for you and I need to know these things. I may have one for you but I don’t want to sound stupid so I just need a little more information.

Cheers

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I have 6 currently installed, and was planning to go up to 8 drives. I held off when starting to experience this. 4 of the drives are these HUS728T8TAL5204, the remainder are HUH series HGST’s. All are 8 TB each. The only other storage is an 2.5" HP SSD, which is the TrueNAS boot drive.

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I found part of my issues. My supermicro BIOS had the fans set to a power saving profile. After changing it to “Heavy IO,” the drives that were going above 65 now seem to be staying 10c below the threshold. Still not ideal temp, but at least the drives are no longer over heating for now.

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This is my hybrid fan control script that I use for sufficient cooling while minimizing noise.

2 Likes
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My Board is an X9SCM. Do you think the script will still work?

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Unfortunatley, no. The script uses a command to control the duty cycle which doesn’t seem to be implemented on X9 BMC, at least according to this post

BUT, the original script that kicked all this off worked by flipping the fan mode from minimal/optimal/heavyio etc, and that apparently does work on X9 systems.

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I’ll have to take a look at that thread. Although, it may still make sense to get a better case as 56 c is still pretty toasty.

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Had the NAS run all night with the “heavy IO” fan setting. Temps are stable, but but don’t go down, they just stay in 50c area. So I guess I’m going to have to try a different case as that indicates to me that adjusting fan speeds with a script won’t help as likely there won’t be enough flow to compensate for high use when needed.

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I may have found a solution. I moved my Arctic P12 max fans to the rear of the case blowing in and my Noctuas to the side blowing out. I am now seeing temps in the mid 40’s while copying data to my 2nd trueNas. Still with the fan profile at “Heavy IO.”

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I still need to do more testing to see where it sits over night and measure acoustic levels.

In general what temps should I be shooting for during idle and use?

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I have a PID based script controlling my fans (and I just finished cleaning the filters) with an ambient temp of about ~22.8°C; here is the readout from that script:

CPU_FAN1	auto	600 rpm
FRNT_FAN1	42%	800 rpm
FRNT_FAN2	50%	2300 rpm
REAR_FAN1	42%	600 rpm
REAR_FAN2	68%	1600 rpm

FRNT_FAN1 is the 3 main intake fans (through the hub built into the case)
REAR_FAN1 is the main exhaust at the rear of the case
FRNT_FAN2 is a front exhaust that goes through the cage for the ssds
REAR_FAN2 are 2 interior fans for the HBA and SAS expander

Current SSD setpoint temp:	35.000°C
Current HD setpoint temp:	32°C

mpr0 Temp:	50°C
ses0 Temp:	40°C
 
da4 Temp:	34°C
da5 Temp:	32°C
da6 Temp:	32°C
da7 Temp:	31°C
da8 Temp:	33°C
da9 Temp:	32°C
da10 Temp:	32°C
da11 Temp:	30°C
ada0 Temp:	35°C
ada1 Temp:	35°C
da0 Temp:	36°C
da1 Temp:	36°C
da2 Temp:	34°C
da3 Temp:	35°C

Average HD Temp: 32.000°C
Average SSD Temp: 35.166°C
HBA Temp Average: 45.000°C

da4 - da11 are the 3.5" main array
ada0 - da3 are the 2.5" sata ssds

See sig for build details

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What case are you using?

Thanks,

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