zip, 7-zip, rar whatever your project folder with all its subfolders at least daily. Get a huge hard disk or LTO tape drives to store your backups (or better both for a fail-safe approach). If anything goes wrong you can revert back to one of the older copies in a very short time without losing everything.
And having RAID-1, RAID-10, RAID-5, RAID-6 boot with multiple SSDs for added redundancy and safety either VROC even better Hardware RAID would be another good thing to do. Along with always having an UPS unit protecting all the hardware.