There are a bunch of options to borg check depending on what you want. A full check with --verify-data is indeed rather slow, because it checks everything (esse

There are a bunch of options to borg check depending on what you want. A full check with --verify-data is indeed rather slow, because it checks everything (essentially equivalent to seeing if all archives can be extracted plus a bunch of extra checks). If you only want to detect e.g. bit-rot, --repository-only will be sufficient in most cases and will be I/O limited.