Microsoft® SQL Server 2012 Unleashed

Database Snapshots Maintenance and Security Considerations

With regard to database snapshots, several things need to be highly managed: snapshot sparse file size management, data latency management that corresponds to your users’ needs, the location of the sparse files within your physical deployment, the sheer number of database snapshots you are willing to support against a single database instance, and the security and access needs of users of database snapshots.