How much disk space is required for a database shadow copy? Is it 1:1 or is the image compressed?
The disk space cost for a shadow copy depends on how the shadow copy mechanism is implemented, including both the storage hardware and software. Some shadow copy implementations might consume the same space as the original, and others may provide efficient compression to save space. The amount of disk space required really depends on how the backup/restore application is designed and will vary among applications.
