I can't comprehend trusting data to a (single) 30TB SSD or even 10TB SSDs given the regularly reported failure modes of "It's not a drive anymore."
Perhaps it's because I'm not doing anything where massive storage is a requirement, but having data striped in RAID6 makes me happy. I'd be happy to use SSD for the underlying medium, but I want something that's less prone to single points of failure. Backups are all well and good, but what's the interface speed of a drive like that? How long to restore a 20+TB backup?