WD Red are fine drives. But make sure you also have good backups. And make sure that you know exactly what to do when one drive drop from the array. With modern big drives raid may no longer be a very good idea for personal use.
I use versioned full rsync backups and no raid for my main NAS storage, to separate backup storage servers. Actually, it is just a bunch of small single board computers, each with a really big HDD, running OpenMediaVault. But I think of it as my personal storage cluster. Sounds better.
