As previously discussed, snapshots that are created within a PowerStore system, either manually or automatically by a snapshot rule, are considered crash consistent. To achieve application-consistent snapshots, users can deploy AppSync in their environment for supported configurations. AppSync simplifies and automates the process of generating application-consistent snapshots, and the creation and consumption of copies of production data using thin clones.
AppSync integrates with PowerStore by handling the quiescing of host applications, and the creation of PowerStore application-consistent snapshots. When a snapshot is taken, AppSync marks the Application Consistent property of the snapshot to yes within PowerStore. Users can then review the Application Consistent property on each snapshot, and confirm which snapshots are application consistent. If application consistency is required, use AppSync and not snapshot rules to create snapshots. An example of the AppSync interface displaying a PowerStore snapshot is shown in Figure 31.