What is an archive bit?
Archival Bit is a small information connected to a computer file that tells the backup program whether the file has been changed since the last backup. It allows such software to perform an additional backup, ie copying files that edited. The function is supported only on Microsoft Windows® computer -run computers and can be unreliable when used with multiple backup programs.
Bit is the simplest unit of information in digital computer systems. It has only two possible values: 1 or 0. In the case of archive bit, the value of 1 or "set" indicates that the file or directory has changed since the last advance, while the value of 0 or "clear" means that there has not been changes. This allows backup software to do something called an additional backup. Unlike complete backup, additional backup only creates copies of files that have been changed that can save time and disk space.
Archival Bit is an example of more information about information, Catribut file,that helps a computer operating system to find out what to do with the file or folder. File attributes are implemented by file system, ie the overall way to organize data on the disk. Different file systems support separate types of file attributes. On computer -running DOS or Microsoft Windows® computers, each file contains an archive bit file, while computers do not support this feature with launching other operating systems.
Windows® user can easily check the status of an archive bit for a given file using the right -click on the file and selecting "Properties". The box checked next to "archive" or "ready for archiving" means that a bit is 1 and has been set. Many backup programs also have the ability to reset bit to 0 after the operation is completed. This prevents software to create another identical copy of the file of the time of the next backup has not changed. Bit is resonly when the file is modified; Just opening or reading the file has no impact on the backup procedure, although changing other file attributes can reset bit.
When using multiple backup programs on the same computer, the archive bit can be unreliable. If one program clears the bit, the other programs do not fall in love. Programs cannot also make changes to the file without bits settings, preventing the archiving of the modified file. For these reasons, modern backup software can often monitor file changes separately and make backups without relying on the archive bit.