File copying
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In digital
Description
File copying is the creation of a new copy file which has the same content as an existing file.
Shadow
There are several different technologies that use the term shadowing, but the intent of shadowing within these technologies is to provide an exact copy (or mirror of a set) of data. For shadowing to be effective, the shadow needs to exist in a separate physical location than the original data. Depending on the reasons behind the shadow operation, this location may be as close as the BIOS chip to the RAM modules, a second harddrive in the same chassis, or as far away as the other side of the globe.
Use
All computer
Implementation
Internally, however, while some systems have specialized
This makes little difference with local files (those on the computer's hard drive), but provides an interesting situation when both the source and target files are located on a remote
has built-in support for this. An even more complicated situation arises when one needs to copy files between two remote servers. The simple way is to read data from one server, and then to write the data to the second server.See also
- Computer file § Moving methods
- Core dump
- Soft copy
- Hard copy
- List of file copying software
- ln (Unix)
- NTFS junction point
- Zero copy
References
- OpenDOS 7.01.)
Further reading
- N-level file shadowing and recovery in a shared file system, United States Patent 5043876
- Method of file shadowing among peer systems, United States Patent 5276871
- Database Shadow Files