This utility creates or maintains an exact duplicate of the original directory. ICE Mirror will compare the mirrored directory to the master directory and correct any disparities. ICE Mirror allows ultra fast mirroring because it performs incremental updates. In other words it only copies files that have changed. If only a few files have been updated, it performs very fast.
Also ICE Mirror allows making differential updates. The differential updates are very useful if you are use read-only media (CD-R, DVD-R, DVD+R, etc.). There are two steps in differential updates:
1. Comparison the master directory and the mirrored directory.
2. Copying all new files from the master directory to the secondary mirrored directory.
In other words it only copies files that have changed in the mirrored directory to the secondary mirrored directory.
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