Shadow copies can take up space. This is especially important in virtual systems. We recommend that you set the minimum VSS percent disk utilization to 10%. We highly recommend that it not be less than 5%. VSS space configuration changes the number of stored copies. When the allocated space is filled, the next VSS snapshot replaces older copies.
The Agent respects the limits set by the operating system and does not change the VSS configuration. It does not exceed the allocated space or maximum limit of stored copies (512).