Run PROBKUP from the operating system prompt. To back up with data compression, use the following syntax:
probkup db-name device-name -com
For example, the following command performs an online backup to a file mybackup.bk at compression level 3, which provides high speed but less data compression than a higher compression level setting:
probkup online sports2021 mybackup.bk -com -comlevel 3
The following command performs an offline backup to a file mybackup.bk at compression level 4, which yields higher data compression at a lower speed:
probkup sports2021 mybackup.bk -com -comlevel 4