TVS 871 QTS 5.2.8.3359 drives 7 and 8 missing after updating to this firmware

I’m using in this unit 8 HDDs, only 2 have a problem, these are WD-WCC7K7LL9KZK, these are the only WCC7 models of the 8, both became unseen after the firmware update. It seems to me I have the following challenge:

On TVS-871, QTS 5.2.8 introduced:

  • Faster SATA link-timeout

  • More aggressive power-state enforcement

Older WD Reds:

  • Spin up slower

  • Respond later to IDENTIFY after reset

Result:

QTS decides the bay is “empty” → Not inserted

Linux often still sees the disk — QTS just refuses to attach it.

I went back to 5.2.7 and the issue was resolved, please look into this!

Thank you very much for your report! We have received the information you provided, and we will conduct a thorough analysis and investigation into this issue.

Hi rmbakker,

Can you provide your WD HDD model name for us to further investigate?

Hi rmbakker,

We could not find the related info on QTS 5.2.8 release note. After consulting with our engineers, please help to issue a support ticket and include your NAS log for further investigation.