'Burn-in' of new System

[Tabmowtez]

I've recently ran a SMART tests, (short and long) on each of my new WD Red 8TB disks which ran fine with no errors.
I'm nearing the end of a 'badblocks -b 4096 -c 512 -ws /dev/da*' test run on each of the disks as well.
The weird thing is, although the tests were all started off within 1 minute of each other, they all seem to be all over the place now almost 65 hours later.
Some are coming up to the last Reading and Comparing phase, others are still doing the last pattern tests.
I would have thought they would be mostly all at the same point?
Another perhaps strange thing is that 3 disks out of the 8 show ~6-7 degrees hotter temperature wise than the others which I thought was weird.
Is there anything to worry about here or should I just see how they go in 'real world' use?

 

[Tabmowtez]

To answer my own question here, badblocks finished on all disks after ~70 hours with no errors. Also all the smart tests I have ran have shown no errors.

As far as the disk temp goes I've installed another fan in the front of my case after identifying the row of disks closest to the front were the hot ones (so the 3 closest to the motherboard plate). The last one was getting airflow as it wasn't being blocked by other disks. This was why only those 3 were running hotter than the rest.

After getting that fan going all disks now have similar temperatures. I'm in the process of moving ~10tb to the new pool now via zfs send/receive & mbuffer maxing out both 1gb links so will continue to monitor the temps.

 

[Redcoat]

Sounds like you are off to a solid start, with good work on the HDD temp issue. Good luck!