![]() Ordinary applications on the system can quickly continue or resume using the original volume, updating data on the disk.This allows two sets of activities to take place at the same time: Once a shadow copy is created, there are effectively two images of the shadow-copied volume available to the system: the original volume, which can be accessed conventionally and the copied data, which can be accessed through the VSS API. ![]() How a particular hardware or software vendor chooses to implement shadow copies is completely at its discretion. VSS identifies each shadow copy set by a persistent GUID. ![]() VSS identifies each shadow copy by a persistent GUID.Ī shadow copy set is a collection of shadow copies of various volumes all taken at the same time. Considering both XP and Server 2003 have passed the end of life, I'm not sure if it is worth the effort to make the -vss option work on them.A shadow copy is a snapshot of a volume that duplicates all of the data that is held on that volume at one well-defined instant in time. I don't know if it is possible to support XP and Server 2003 without using the Volume Shadow Copy Service SDK. I implemented VSS in Duplicacy CLI without using the Windows SDK - as far as I know this is the only pure go implementation of VSS. So usually those backup software have to have two different binaries, one for each SDK. Writer Id: Ī c/c++ program to support VSS on Vista or later needs to use the Windows SDK, but on XP and Server 2003 it need to use the Volume Shadow Copy Service SDK. Vssadmin 1.1 - Volume Shadow Copy Service administrative command-line what is it doing?>Īnd here is what comes back from the VSSadminĬ:\Documents and Settings\stealth>vssadmin list writers it can do previous versions.Īcronis cloud is able to evoke the call to it.granted i had to install a bunch of VSS patches to make it work. I apologize for misleading you into believing that we would support VSS on Windows Server 2003. Therefore, for these Windows versions the VSS checkbox should be hidden at all times. The interface of the Volume Shadow Copy Service is different on XP and Server 2003, which makes it difficult for the CLI version to support -vss on these early versions of Windows. I found the correct API to check if the process is running with elevated privileges, but then realized that the CLI version supports the -vss option only on Windows Vista and later. ![]() I'll try to release a new 2.1 beta that fix this later today. That might be the problem as the API function that Duplicacy calls to check the elevated privileges may not work on Server 2003 and XP. I just noticed you're running Windows Server 2003. right clicked and ran as admin and the same thing came up. Thought maybe the issue was because previous versions were not enabled. If you run Duplicacy as administrator (from the right click menu), do you still have the vss option greyed out?ĭid you exit the current running instance of Duplicacy first? That is, there should not be a Duplicacy icon in the system tray when you right click the Duplicacy icon on the desktop to run it as administrator. SeRestorePrivilege Restore files and directories Disabled SeBackupPrivilege Back up files and directories Disabled Run Duplicacy as administrator from the right click menu should do it, but I don't know if an admin account is sufficient. Technically, the VSS option will be enabled if the process token has elevated privileges. The admin account i use when i run it from that account it doesnt have the option to turn on VSS Kevinvinv is right - make sure to exit the current running instance by right clicking on the duplicacy icon otherwise you're just reactivating the current instance. Yes, you need to run duplicacy as administrator. I know I see this on Windows if I dont run duplicacy as an Administrator by right clicking on the duplicacy icon. The option in the program is there however it is greyed out. The VSS service is started and all the latest KB patches are installed All issues Option to use VSS greyed out in Server 2003
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