The Wayback Machine - https://web.archive.org/web/20220705073752/https://boards.dingoonity.org/retro-game-350rg-350/nec-pc-9801-and-pc-9821-emulator-np2kai/

: When combined with encryption, solid archives make it harder for third parties to see even the filenames within the package. Important Trade-offs:

: If the archive is damaged, it is much harder to recover individual files compared to a non-solid archive.

: Updating or deleting a single file requires the entire archive to be re-processed.

: To extract a file from the middle of the archive (like in part2.rar ), the software must first process all preceding data. Solid archives - WinRAR - Documentation & Help

: This is most effective when the archive contains many small files or files with similar content.