“Solid archiving can be achieved with ZIP, too. Just first zip all your files... into an intermediate zip file without compression. Then compress that single intermediate zip file.” Super User · 16 years ago

“I get a very irritating rar solid archive support unavailable error if the folder I browse has subtitle files inside rar files.” Reddit · r/libreELEC · 5 years ago

: Modifying or deleting a file within a solid archive requires the entire archive to be repacked.

: To extract a single file from the middle of a solid archive, the system must decode all previous data in the stream.

“The RAR format has several built-in features for integrity... recovery record which is extra parity data added to the volume.” Reddit · r/DataHoarder · 9 years ago

: Treating multiple files as one allows the compression algorithm to exploit redundancies across different files.