FastResync provides the following enhancements to VxVM:
FastResync optimizes mirror resynchronization by keeping track of updates to stored data that have been missed by a mirror. (A mirror may be unavailable because it has been detached from its volume, either automatically by VxVM as the result of an error, or directly by an administrator using a utility such as
FastResync allows you to refresh and re-use snapshots rather than discard them. You can quickly re-associate (snap back) snapshot plexes with their original volumes. This reduces the system overhead required to perform cyclical operations such as backups that rely on the snapshot functionality of VxVM.