All the work you do editing and debugging the files in your DITA project ends up being stored as files on disk. If something happens to one or more of those disk files, you work may need to be re-created. Disk files can be lost for several reasons, including:
- You accidentally erase them. Because DITA projects may have hundreds or thousands of files, if may be relatively easy to do this when you don't have a library system or content management system.
- The hard drive in your computer fails. Hard drives are mechanical devices and will fail after a finite amount of time.
- The file system on your disk drive becomes corrupted.