| 摘要 |
A computer file backup system and method are provided. An onsite backup device is in communication with the primary device and includes a first backup copy of the files. The primary device includes a first instance of file modification detection software. The onsite backup device includes a first instance of file modification software, as well as a second instance of the file modification detection software. A central backup device is provided in communication with the onsite backup device, and a second backup copy of the files resides there. The central backup device includes a second instance of the file modification software. The detection software detects respective changes to the files between i) the original files and the first copy, or ii) the first copy and the second copy, to determine which files have been updated or renamed. A fork is provided on the backup devices to preserve file metadata.
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