Will WD60EFAX work in MyCloud EX4?

I can’t find any compatibility guides, and since the EX4 is “older” I don’t know what new drives will work. Old drives are failing, and I want to put in bigger ones.

Hello,

Please refer to the following KBA article: https://support-en.wd.com/app/products/product-detail/p/132#WD_compatibility

Western Digital WD60EFAX hard drives use SMR technology, which should NEVER be used with RAID arrays.