| Subject | English | Polish |
| comp., MS | backup file | plik kopii zapasowej (A duplicate of a program, a disk, or data, made either for archiving purposes or for safeguarding files) |
| comp., MS | file backup | kopia zapasowa pliku (A backup of all the data in one or more files or filegroups) |
| comp., MS | file differential backup | różnicowa kopia zapasowa pliku (A backup of one or more files containing only changes made to each file since its most recent file backup. A file differential backup requires a full file backup as a base) |