Take a Manual Snapshot
You may need to take an on-demand (manual) snapshot of a volume before you update software or make hardware changes on the array.
Even if you plan to take snapshots of volumes manually or use a third-party program, you can create a volume collection without schedules on those volumes that are being manually snapshotted. You may see a message if you take a snapshot around the same time that a scheduled snapshot for the volume is going to start. Check the volume collection by clicking on its name, then click the Snapshot Collections tab to ensure that no snapshot is pending before you trigger a manual snapshot.
NOTE: Manual snapshots are not guaranteed to be application consistent.