Hello, this is Bandisoft.
When creating a new archive with Bandizip, you may set the Archive Format as 7Z and the Compression Level as Maximum to achieve the highest compression ratio expected from archiving programs for general purposes.
New Archive > Archive Format: 7Z
New Archive > More Options > Compression Level: Maximum
Though it depends on the types of files to be compressed, however, it is nearly impossible for any archivers to shrink a file size to 20% or less of the original one. Still, you may try it at least.
Or you may try split-archiving to split 5 terabytes of files as several archives each of whose file sizes is 1 terabyte or less. Please visit the link below to learn more about split-archives.
Please contact us again if you have any other questions or issues.
2021년 11월 11일 목요일 오후 7시 34분 58초 UTC+9에 曾泽宇님이 작성: