File matching method in computer network data backup
A computer network and backup file technology, applied in the field of network information, can solve problems such as back failure, and achieve the effect of data storage safety and integrity
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[0035] In the NTFS file system, the file is the most important file under the NTFS file system through the master file table (MFT, Master File Table), which records the status of all files and directories, similar to the FAT+FDT under the FAT file system function, and stores much more file attributes than FAT+FDT. Each file on an NTFS volume has a 64bit unique identifier called a file reference number (File Reference Number). The file reference number consists of two parts: one is the file number, and the other is the file serial number. The file number is 48 bits, corresponding to the position of the file in the MFT. In Windows, each file or MFT record is assigned a 16-byte object ID (GUID). The length of the GUID and the algorithm used by Windows to generate the GUID can ensure that each GUID is unique. There is an $O index of the \$Extend\$Objid metafile in the MFT, which is sorted by GUID and is the index of the object ID. In this index, the object ID attribute of the fil...
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