Fragmented files accumulate over time in the Windows file system. This is due to the fact that the operating system sequentially fills the free disk space when writing files. Free disk space, which appears when old files are deleted, can be located in different parts of the disk; therefore, each file can be split into many fragments. When reading or writing such a file, the hard drive head must constantly move, which reduces the read/write speed and causes mechanical wear of the disc. AxxonSoft
has developed its own file system SolidStore especially for storing video archives.