I have 2 WD MyCloud 3TB servers. Can I transfer the drives into a driveless EX2?

Hard drive wise, yes…but not data wise. Your My Cloud drives will need to be formatted first, wiping out all data on them, before being able to use them. EX2 and My Cloud don’t have the same OS…so you need to start from scratch. If this answers your question, please click the star under my username…