I'm looking to add data integrity checking/verification for all of my data drives. I know snapRAID can do this in addition to its main ability to make parity disks. Is there anything else out there that handles data integrity? Note: I don't want to use something like Par2 because I don't like the .hash or .md5 files scattered throughout my file structure. I'd much prefer anything other than storing hashes in the folders with the files themselves.
Thanks for your help!