Known Issue: Validation of Backup Set Fails for SharePoint Backup
Summary:
You receive an error message stating validation of backup failed, while attempting to perform SharePoint backups.
Cause:
This message indicates the VSS writer for SharePoint or SQL server is not available.
This article applies to:
Carbonite Plans | Products | Platforms |
Power and Ultimate (Not sure?) | Carbonite Safe Server Backup (Not sure?) | Windows |
Solution:
To resolve this problem, run the following commands from an elevated Windows Command Prompt:
- Click Start; All Programs; Accessories to locate the Command Prompt menu.
- Right-click it and select Run as administrator.
- Within the Administrator:Command Prompt window, type vssadmin list writers. If this does not display SharePoint VSS writer or SQL VSS writer, proceed to resolution #1.
- Change your directory to the [CSSB Directory]\bin\ and run vshadow.exe -wm2. If this does not display VSS writers metadata information, proceed to resolution #2.
Note: The [CSSB Directory] is as follows:
For new users
- C:\Program Files\Carbonite\Carbonite Safe Server Backup (for 32-bit operating systems)
- C:\Program Files\Carbonite\Carbonite Safe Server Backup(x64) (for 64-bit operating systems)
For existing users
- C:\Program Files\Carbonite\Carbonite Server Backup (for 32-bit operating systems)
- C:\Program Files\Carbonite\Carbonite Server Backup(x64) (for 64-bit operating systems)
Resolution #1
- Start the SharePoint writer and/or SQL writer services if they are in the stopped state.
- If the SharePoint writer is in disabled state, re-register it using resolution #2.
Resolution #2
- Re-register SharePoint VSS writer by running these commands from an elevated Command Prompt:
- Type stsadm -o unregisterwsswriter
- Type stsadm -o registerwsswriter
- STSADM can be located in the following directory:
- C:\Program Files\Common Files\microsoft shared\Web Server Extensions\[Version]\BIN\
Note: Your [Version] will vary depending on the version of SharePoint installed. For example, STSADM for SharePoint 2010 is located in C:\Program Files\Common Files\microsoft shared\Web Server Extensions\14\BIN\.