Pre and post snapshot creation operations
NetBackup performs several vital functions before snapshot creation. Without the pre-processing, the integrity of the snapshot cannot be guaranteed and the backup data may be of no value.
Table: Pre and post snapshot creation operations
Step | Action |
|---|---|
Step 1 | Backup process requests database quiesce. |
Step 2 | Database application quiesces (must wait for transactions to complete). |
Step 3 | Lock and flush the file system. |
Step 4 | Create the snapshot. |
Step 5 | Unlock the file system. |
Step 6 | Release (unquiesce) the application. |
Step 7 | Back up the snapshot. |
Step 8 | (Optional:) Remove the snapshot. |
Note:
Steps 1, 2, and 6 in Table: Pre and post snapshot creation operations apply only to databases, such as those requiring NetBackup for Oracle.