Replacing all four drives in EX4100

I have an EX4100 that I populated with 4TB HDDs from various sources (old PCs, disposed macPro, etc.). The newest spinning rust is about 5 years old and you don’t want to know about the oldest. As much as I’d like to replace them with larger HDDs I know OS5 doesn’t like that.
Will I need to replace each HDD one at a time, rebuild the RAID 5, rinse and repeat? This is what I get from 2 and 4 Bay Internal Drive Replacement for WD My Cloud.
Thank you.

Hi @GleasonFan,

Have you opened a Support Case? If not opened, for more information, please contact the WD Technical Support team for the best assistance and troubleshooting:

Per your comment, I support request was submitted on 16 Mar 2023. I referenced you as source.