If I understand Windows Shadow Copy is used to hold Files and folders up to the size limit determined in Shadow Copy settings.
However there are some doubts about its usage such as:
** if Volume C: is 100 GB and you set up Shadow copy site limit to 6 GB , how does the system determine which folders or files to keep in the shadow copy so, that if next day or week one of the files or folders get deleted, user can recover them from "Previous Version"
**There are also Backup products that use Shadow Copy, such as Veritas Netbackup that uses VSS. I wonder how Netbackup uses Shadow copy, even though I have read that it uses it for Snapshot.
So if Shadow copy size limit is set to 6GB limit then if Netbackup needs more than 6GB would it delete the data inside of it or it will just fail and abandon the backup job ?
So probably Microsoft Windows Expert and/or Backup Expert can answer this question
Any help will be very much appreciated.