Cloud backups - spread over relatively small free accounts?
Cloud Sync can create multiple connections all with different user credentials, but not duplicate connections with the same user credential.  No incremental update
Back up Cloud Sync and restore it to a previous version via Hyper Backup
Data scrubbing on BTRFS volumes first runs file system data scrubbing for data accuracy,
then RAID scrubbing for data consistency.
File system data scrubbing calculates a checksum for every written file in BTRFS volumes
and further protects those data checksum with a metadata checksum.
RAID 5 and SHR implement parity striping at the block level, with parity blocks distributed across blocks. Perform or Schedule Data Scrubbing.