No, but be prepared for any of those drives failing.
Sometimes it's better to not have drives of the same make, model and age, as sometimes they tend to die at the same time.
Who are we?
We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
We are one. We are legion. And we're trying really hard not to forget.
-- 5-4-3-2-1-bang from this thread
No, but be prepared for any of those drives failing.
Sometimes it's better to not have drives of the same make, model and age, as sometimes they tend to die at the same time.
Age doesn't matter but I would be careful about raid 5 these days.
The size of drives means the chance of another drive failing during rebuild is much higher then normal. I would go for raid 6 or raid 1.