Backup.7z

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).

-ms=2g : Limits solid blocks to 2GB to balance compression and access speed. 7z(1) — p7zip-full — Debian stretch backup.7z

The "solid" feature in a file refers to Solid Compression , a method where 7-Zip treats multiple files as a single continuous data block. In the 7-Zip GUI , you can enable

: 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. In the 7-Zip GUI

When creating a backup, this feature provides several benefits and trade-offs: