F4-212 (2G) Storage Pool Degrading Issues

[AnsemT]

Currently at my wits end trying to get my F4-212 (2G model) working properly. Running TOS 5.1.73, BIOS 324. I've had it for 2 weeks, and been constantly fighting with Raid Degraded errors.

I have 2 x 8TB Seagate Ironwolf HDD drives installed (ST8000VNZ04/N004). I've been able to get the NAS set up, accounts set up, and data transferred over. The HDDs are set up in TRAID mode.

About every 24-48 hours, I receive a message that the Storage Pool has degraded:
"The RAID in storage pool 0 has been degraded! Please check if you have a failed drive in your RAID, or if a drive has detached from the RAID. For your data security you need to replace the failed hard disk and repair the RAID as soon as possible"

However, when I look at the HDD status, both drives are labeled as "Normal". SMART tests look ok as well. The only odd thing will be that one HDD temperature will be at 0C/32F, while the other will be at normal operating temperatures.

The only way I can have the RAID repaired is by rebooting the F4-212 NAS. It then will rebuild over a couple of hours. The NAS has crashed 2 or 3 times over the course of 2 weeks, and I've had to do a hard reboot to get it able to login through the web browser again.

I've tried swapping the "cold temp" drive for a new one, I've tried reinstalling TOS, I've tried "reseating" the drive connection, I've tried swapping the drive positions in the NAS. But I'm still getting this weird RAID Degraded error, and 1 HDD is always as 0C/32F.

Any suggestions for next steps? There is nigh no documentation that I can find online for the F4-212 (2G), so I can't figure out if I'm doing something wrong, or if this is a issue with the F4-212 model, or if my particular unit is defective.

[TMzethar]

We need more information to determine the problem.
please generate and download the log report in TOS > Technical Support > Report Issues, and then send it to us for inspection through the support email or customer service window on the official website.

[AnsemT]

An email with a link to the log report has now been sent to technical support.

[RyanYang]

Before replying to your email, you can try replacing the hard drive slot and turning on TNAS to see if it is still the hard drive that cannot recognize the temperature properly.

[TMroy]

Please power off your TNAS, remove all your drives, release all drives from the tray, install them again, and make sure all drives are properly seated.

[AnsemT]

The temperature reading works properly once it has synchronized. It's only when the pool becomes degraded that this issue occurs.

I most recently re-synchronized on 20Jun2024, so both drives are properly reading a temperature. The next time it degrades again, I'll try replacing the hard drive slot and turning on the NAS to check if the temp error continues on the same drive.

[AnsemT]

The Volume degraded again this morning, but I didn't receive any notification until I logged into the TOS Software, even though I have email notifications turned on. I then had 5 back-to-back error notifications in my email and in TOS that the Raid had degraded (See image below "20240625 Errors").

20240625 Errors.png

I have no option to repair the NAS, as the Edit button under the Storage Pool Screen is greyed out (See image below "20240625 Storage Pool")

20240625 Storage Pool.png

HDD2 had a 0F/32C Temperature reading. The last time this happened, it was HDD1. (See images below "20240625 HDD1" and "20240625 HDD2")

20240625 HDD 1.png

20240625 HDD 2.png

Here is an image of the Volume Screen:

20240625 Volume Screen.png

I turned off the NAS, removed HDD1 and HDD2 from their trays and then reinstalled them into the trays. I moved HDD1 to HDD3 location, and moved HDD2 to HDD1's location.

I then turned on the NAS. It automatically started rebuilding the Storage Pool, but the edit button is still greyed out, so I cannot manually repair the storage Pool (See image below "20240625 Storage Pool Rebuilding")

20240625 Storage Pool Rebuilding.png

Both HDDs, in their new positions, show a temperature reading while it's rebuilding (See images below):

20240625 HDD 1 Rebuilding.png

20240625 HDD 3 Rebuilding.png

Here is a screenshot of the Volume Pool screen while rebuilding:

20240625 Volume Screen Rebuilding.png

It usually seems to take 10 hours to rebuild the pool. What should I do once it is complete?

[ColaChen]

You can patiently wait for the rebuild to complete, and if it returns to normal, you can continue using it.

[AnsemT]

Yes, my intention is to wait for the pool to rebuild. However, is there any diagnosis process to determine why the pool is degrading?

I would rather not rebuild the pool every few days, as that indicates to me that something is wrong with the system.

I also find it troubling that I don't receive error notifications until after I logged in. The TOS NAS should be able to email me notifications once the error has occurred, not after I manually log in.

Once the NAS has rebuilt, what should I do for troubleshooting?

[ColaChen]

During the waiting period, you can export the logs to check for any errors and kindly provide feedback in time. Thank you very much.

please generate and download the log report in TOS > Technical Support > Report Issues, and then send it to us for inspection through the support email or customer service window on the official website.