Backup.7z -

: To extract a single file from the middle of a large backup.7z solid archive, the software must decode all preceding data in that solid block, making partial restores slower.

-ms=off : Disables solid mode for faster individual file access. backup.7z

: Modifying or deleting a file within a solid archive is more resource-intensive because the entire solid block must be rebuilt. How to use it : To extract a single file from the middle of a large backup

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). How to use it In the 7-Zip GUI

: 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.