Eh? I've been admining raid arrays since before SSDs were a thing. Making sure you build your array from disks from different batches to reduce the likelihood o

Eh? I've been admining raid arrays since before SSDs were a thing. Making sure you build your array from disks from different batches to reduce the likelihood of simultaneously failing has always been the advice. I make no assertion as to WD quality, but failures like you describe have been the bane of sysadmins quite some time.