Caution, these are hard disks with SMR technology
https://www.heise.de/newsticker/meldung/Manche-WD-Red-Festplatten-fuer-NAS-verursachen-Probleme-4703116.html

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I have 4x 6TB Reds in the raid (3x 256MB cache and 1x the old one with 64MB cache in the Synology NAS). So SMR and CMR are mixed, which is not so great in a raid network. SMR is not at all suitable for Raid and ZFS -> rebuilds are always a risk. SMR and CMR should not be mixed anyway, I hope WD has a solution ready here and exchanges the disks - absolutely useless in the NAS.

At Seagate, the Barracudas with 2/4/8 TB are also with SMR and it was not pointed out.

Answer

This is an impertinence from WD. They should make a new product series for SMR (brown or something), then they can sell them as archive disks, but certainly not for NAS with RAID!
So, only these WD Red are SMR:
WD20EFAX 
WD40EFAX 
WD60EFAX
 All others should be classic PMR (also WD20EFRX.... but also WD80EFAX).

Answer

I also got one of these in 2019!

I wonder what Digitec will do - after all, they just secretly switched to SMR and our data is in danger!

In my opinion, Digitec should exchange them free of charge and send the SMR rubbish back to WD!!!!

https://www.digitec.ch/de/brand/showdiscussion/wd-red-smr-skandal-was-wird-digitec-tun-11274

Answer

Unbelievable what WD is allowing itself to do. No longer compatible with a Synology DS916. I will change to Toshiba N300 (4TB, 3.5").
 3.5"). Then another provider will laugh.

Answer

und hier

https://www.servethehome.com/wd-red-smr-vs-cmr-tested-avoid-red-smr/

Thanks to the public outcry, WD is now properly noting the use of SMR technology in the drives on their online store, and Amazon and Newegg have also followed suit. The potential for confusion is still high though. The general population does not follow drive technology closely. The differences between SMR and CMR are fairly nuanced where regular STH readers may understand, but those regular readers are the same IT professionals that keep up on the latest technology trends in the market. Absent that context, simply putting the word “SMR” in a product listing does not help an uninformed purchaser choose the correct product. Still, it is a good step.

If you are reading this piece, and know someone who uses, or may use WD Red drives in NAS arrays but may not keep track of trends, send them this article, a chart from it, or the video. So long as there is proper disclosure and people are making an informed choice, then SMR is a valid technology. Simply saying SMR is not enough without showing the impact.

Your data. Your choice.

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Caution, these are hard disks with SMR technology https://www.heise.de/newsticker/meldung/Manche-WD-Red-Festplatten-fuer-NAS-verursachen-Probleme-4703116.html

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