wbackup

1. Calclate 32bit checksum and SHA256 hash.
2. this file exist in duplicate check database.
3. if not exist then comppress source file and export binary database.
4. add sourcefile database.
5. remove oldest files.
6. remove archive flags.

duplicate check database

32bit checksum SHA-256 hash binary data stream id

binary data stream

binary data stream id 32bit HEX FFFF-FFFF-FFFF-FFFF-FFFFFFFF.gzip