In the 7-Zip GUI , you can enable this by checking in the Add to Archive dialog. In the command line, use the -ms switch: -ms=on : Enables solid mode (default for 7z).
: If a portion of a solid block is damaged, it can potentially affect all files within that same block. backup.7z
-ms=2g : Limits solid blocks to 2GB to balance compression and access speed. 7z(1) — p7zip-full — Debian stretch In the 7-Zip GUI , you can enable
: Because similar data patterns across different files are compressed together, solid archives significantly reduce file size, especially for backups containing many small or similar files. -ms=2g : Limits solid blocks to 2GB to
-ms=off : Disables solid mode for faster individual file access.
The "solid" feature in a file refers to Solid Compression , a method where 7-Zip treats multiple files as a single continuous data block.