If a solid block becomes corrupted, you may lose access to all files within that specific block, whereas in a non-solid archive, a single error usually only affects one file. How to Use It
Because 7-Zip can find patterns across different files rather than just within a single one, solid archives are usually much smaller than non-solid ones. A67zip
Updating or adding a new file to an existing solid archive can be slower because the software may need to recompress a portion or all of the solid block. If a solid block becomes corrupted, you may
This mode is most effective when your archive contains many files of the same type or with similar content, as it "consolidates" the redundancy. Important Trade-offs This mode is most effective when your archive
To extract a single file from the middle of a solid block, 7-Zip must decode all the data preceding it in that block, which can make extracting individual files slower.