How many shadow copies you can create in Windows?


There are various numeric limits, imposed either in the OS or in the specific shadow copy provider. Here is a table that summarizes all the numbers.


 


Note that the limit below is per volume, not per system.


 






































Maximum number of shadow copies per volume


Windows XP


Windows Server 2003


Provider


Shadow type


The in-box provider


(ships with Windows)


Writers, non-persistent (used for backup)


1


512


 


No writers, non-persistent


n/a


 


Writers, persistent


No writers, persistent


Shadow Copies for Shared Folders


(no writers, non-persistent)


64


Third-party Hardware providers


 


Writers, non-persistent (used for backup)


n/a


 


Provider-specific (No max limit imposed by VSS)


No writers, non-persistent


Writers, persistent


No writers, persistent


Shadow Copies for Shared Folders


n/a