Succssor of WD40EFRX

What disk should I replace a WD RED WD40EFRX in a raid 1.
I have had two of these for soon six years.
Fainally one of them gave up.
Looking for a compatible replacement.

Hi @engmika,

Please refer to the article My Cloud: Hard Drive Compatibility:

Please contact the WD Technical Support team for best assistance and troubleshooting: