Remote mirror and copy services copies a source volume to a target volume, similar to FlashCopy services.
It differs from FlashCopy services because when using the remote mirror and copy services, your source and target volumes can be located some distance from each other. This allows a backup to be kept at a farther physical location. The other difference is that remote mirror and copy services provides a more consistent copy service by copying all changes that are made on the source volume. FlashCopy creates a single point-in-time copy.
Remote mirror and copy has three different methods of copying: