Introduction to snapshot operations

This topic presents background information on snapshot operations and copy-on-write snapshots.

Before a snapshot is created, there are certain operations that NetBackup performs as a part of the pre- and post snapshot creation process. The snapshots that are created after these operations contain authentic data. Copy-on-write (COW) is a snapshot type that gives a detailed account of data as it existed at a certain moment.

For a diagram of the daemons or services involved in creating and backing up a snapshot, refer to the NetBackup Troubleshooting Guide.