No, the only proper way to prevent attacks on the data thereof is to keep a backup that isn't readily accessible. Aka offline, whether that's literally turned off or just airgapped from the rest of the infrastructure.
how will they both encrypt your machines drive, and the NAS backup with snapshots on it, but yet not defeat the air gap? air gapping is not some magical technique that keeps you secure.
if you really want to protect yourself from crypto lock attacks, which seems odd for an individual to be concerned about (nobody extorts individuals for a few hundred dollars to get the keys, they extort businesses for many thousands of dollars) then you need write once media like MDISC or WORM tapes.
