When you start a backup, the specified volume is divided into a number of subordinate data blocks that are then backed up. The initial backup is considered the "parent backup" and will be a Full Backup of the entire volume to establish the baseline blocks to be monitored. Before performing the backup, a VSS snapshot is created, then an internal monitoring driver checks each block to detect any changes. As scheduled, Arcserve UDP Agent (Windows) will then incrementally back up only those blocks that have changed since the previous backup. You can schedule the subsequent block-level incremental backups ("child backups") as frequently as every 15 minutes to always provide accurate, up-to-date backup images.
If you need to restore the volume information, the most recent backed up version of each block is located and the entire volume is rebuilt using these current blocks.
Arcserve Unified Data Protection - Full:
Arcserve Unified Data Protection - Agent:
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