BlueBockser

Restic doesn’t write your files 1:1 to B2, but instead chunks their content into files according to a configurable [pack size](…readthedocs.io/…/047_tuning_parameters.html#pack… (16MiB by default). If you have a very large amount of data, you could look into increasing the pack size, although that comes with its own risks (see the docs above).