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Different Uses for Copy and Minicopy  



Prior to the introduction of minicopy, the copy operation was used for two purposes: to add members to a virtual unit, and to restore a member to the shadow set from which it was removed. In order for a member to rejoin the shadow set, its data must be made to match the data on the shadow set.

The copy operation is the principal method for creating a multiple member shadow set. (You can also use the DCL command INITIALIZE/SHADOW to create an empty multi-member shadow set.) The minicopy operation is now the preferred method for returning a member to a shadow set.

Typically, the reason for removing a shadow set member is to back up the data onto tape or disk.

To use a shadow set member to perform a backup operation, a system manager must perform the following steps:


NoteFor detailed information about the conditions under which this form of backup is supported, see Guidelines for Using a Shadow Set Member for Backup.


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