due to current high price of hdds, I would like to switch from running RAID1 to JBOD + offsite backup (Backblaze). In theory it's a much better approach (if PC gets fried by lighting strike, I still retain all my data), but in practice it will make me vulnerable to file corruption issues (Backblaze will silently replicate all changes and erase past versions after 30 days).
Do you know of any program, that run checksums on all my files and compare them to "Modified:" timestamp (I'm assuming that all hash changes without modified timestamp chnage would indicate file corruption)?