The glossary below contains many of the terms you will find in common use throughout the Symantec Security Response website. Please refer to this list to find definitions of terms and answers to other Internet security-related questions.

DCO data change object

A Veritas Volume Manager object used to manage FastResync map information in the DCO log volume. A DCO and a DCO log volume must be associated with a volume in order to implement persistent FastResync on that volume.

A VxVM object that is used to manage information about the FastResync maps in the DCO volume. Both a DCO object and a DCO volume must be associated with a volume to implement Persistent FastResync on that volume.