Upgraded from 4x 4TB to 4x 8TB (WD Red) and disk temperatures increased almost 10 °C

[Mannekino]

Hi,

Last weekend I upgraded my storage pool from 4x 4TB to 4x 8TB. Both the 4TB and 8TB are WD Red drives. After I was done with upgrading the storage pool I noticed the temperatures of my new disks were significantly higher compared to my old drives. Aside from swapping the drives one-by-one I haven't changed anything in my system. The drives are in the same location. Here is a graph of the worst drive:

1. Has anyone else experienced this with the 8TB WD Red drives?
2. Was this to be expected?
3. Was this an after effect of the re-silvering process perhaps, and the drives just never managed to return to normal operating temperature?

I managed to increase the fan speeds of the intake and exhaust fans of the compartment where the drives are located. Temperatures are back in the normal range now.

Code:

da3 32C
da2 33C
da1 32C
da0 31C

 

[Patrick M. Hausen]

But 40-ish Celsius is still cozy! Look up the specs of your drives and check the operating temperature. The should be certified for 0 to 65 or in that order of magnitude.

Just relax ... ;)

Patrick

P.S. These are mine:

ada0-3 3.5" spinning, ada4-5 2.5" SSD

 

[Mannekino]

Well I've read the big topics about temperatures and failure rates based on the Google study. From what I gathered the failure rate goes up pretty significantly after 3 years when the disks operate above 45 °C and that has been happening under load with my new disks.

What kind of software did you use for that image?

 

[SweetAndLow]

My 8TB reds are about 8C more than my 4TB reds. These drives are in a supermicro chassie so pretty good cooling. I think that when drives get larger they just create more heat and use more power.

Code:

HDD Temperature:
da0 [WDC WD30EFRX-68EUZN0 ]: 28.0C
da1 [WDC WD40EFRX-68WT0N0 ]: 29.0C
da2 [WDC WD30EFRX-68EUZN0 ]: 27.0C
da3 [WDC WD40EFRX-68WT0N0 ]: 29.0C
da4 [WDC WD40EFRX-68WT0N0 ]: 28.0C
da5 [WDC WD40EFRX-68WT0N0 ]: 25.0C
da6 [WDC WD40EFRX-68WT0N0 ]: 28.0C
da7 [WDC WD40EFRX-68WT0N0 ]: 28.0C
da8 [WDC WD30EFRX-68EUZN0 ]: 27.0C
da9 [WDC WD30EFRX-68EUZN0 ]: 29.0C
da10 [WDC WD30EFRX-68EUZN0 ]: 23.0C
da11 [WDC WD30EFRX-68EUZN0 ]: 30.0C
da12 [WDC WD30EFRX-68EUZN0 ]: 25.0C
da13 [WDC WD30EFRX-68EUZN0 ]: 25.0C
da14 [WDC WD80EFAX-68LHPN0 ]: 33.0C
da15 [WDC WD80EFAX-68LHPN0 ]: 33.0C
da16 [WDC WD80EMAZ-00WJTA0 ]: 33.0C
da17 [WDC WD80EMAZ-00WJTA0 ]: 32.0C
da18 [WDC WD80EFAX-68LHPN0 ]: 34.0C
da19 [WDC WD80EFAX-68LHPN0 ]: 30.0C
da20 [WDC WD80EMAZ-00WJTA0 ]: 33.0C
da21 [WDC WD80EMAZ-00WJTA0 ]: 31.0C
da22 [WDC WD40EFRX-68N32N0 ]: 26.0C
da23 [WDC WD40EFRX-68N32N0 ]: 27.0C

 

[Patrick M. Hausen]

Drives: Toshiba N300 4GB
Cassis: Supermicro Mini Tower https://www.supermicro.com/en/products/chassis/tower/721/SC721TQ-250B
Software: FreeNAS --> InfluxDB --> Grafana

In summer I ramp up the fans, but the rest of the year I prefer the machine quiet.

 

[Mannekino]

My 8TB reds are about 8C more than my 4TB reds.

I think this is similar to the average delta I'm seeing with my drives. So I guess that's just how it is. So I've increase the speed of my fans by about 250-300 rpm to get my old temperatures.

 

[sretalla]

Could it be that you got supplied RED Pros instead of just plain REDs?

7200 RPM will certainly account for 20% hotter.

 

[sretalla]

Also, don't forget drive replacement will be associated with a resilver, so more activity=more heat. Are the resilvers finished?

 

[Mannekino]

I just checked the drives to be sure, but they are the WD80EFAX which are the 5400 RPM variant.

Yes the final resilver finished last Sunday, so t's been 4 days since. My intake and exhaust fans run at about 900 RPM now with my Corsair Commander Pro.

Before I had them attached to my X9SCM-F SuperMicro board which offers little control over the fans. I saw them usually between 400-600 RPM when reading out the IPMI data.

Just took another screenshot. You can clearly see the rise in temps. So the period before 24 Feb was my old 4TB drive and since 24 Feb is the 8TB drive. Also you can see when I increased the RPM of my fans yesterday.

 

[mav@]

IIRC 8TB WD RED drives are indeed hotter then other capacities. That is why, for example, they are not sold with FreeNAS Mini, only 1, 2, 4, 6 and 10TB options are available in the configurator. 8TB would either overheat there or make the cooling too loud.