VSS allows backups of in-use, locked, or open files without interrupting whatever process or user is currently accessing those files. VSS allows backups to be taken of in-use, locked, or inaccessible files without interrupting whatever process or user is currently accessing those files.
When the backup is finished, the Writer will revert to the Stable state. Stuck Writers must be reset like a Failed or Unstable Writer. A list of currently-available Writers can be accessed via the command prompt on any Windows computer.
The sections below are collapsed. If no backups are running, the writer may be stuck, and can be reset like Failed or Unstable writers. If a service cannot be restarted, a reboot of the machine is required. Writers in the Failed or Unstable states have encountered a problem, and may need to be reset.
It is important to note that not all controlling services can be restarted.
It is also important to note that restarting some services can cause downtime for the application that is related to the service. A reference list of VSS Writers and their controlling services can be found below.
It is important to note that not all services that control VSS Writers can be restarted. Open a command prompt as an Administrator and run the command: I can walk you through this process!
Writers that display as In-Progress or Waiting for Completion are currently in use by some backup process. A system may have active Writers that are not in this list. Each writer is controlled by a Windows Service.
A system will only have Writers that correspond to Windows components that are installed on the system. Ideally, all Writers should be Stable when no backups are in progress. Writers that are currently In-Progress are being used for a backup. For System State, some Writers that do appear in the list may not be required for the backup to complete.
If a service cannot be restarted, a reboot of the machine is required. This is especially useful for databases, as it allows backups to be performed while the database is active without requiring downtime.
If a Writer is listed as In-Progress or Waiting for Completion when no backups are running, the Writer may be "stuck". It is not comprehensive. This command will list all of the Writers currently available on the machine and display the state of each.Microsoft SharePoint Foundation Service Pack 1 (SP1) was recently released through Microsoft Update.
On a default installation, Windows SBS Standard administrators should be able to see it in the SBS Console and would need to approve it for installation before it is offered for installation on the server.
In most cases, the Windows Service that controls a VSS Writer can be restarted. This usually brings the Writer back to a stable state.
For example, the Microsoft Exchange Writer is controlled by the Microsoft Exchange Information Store (MEIS) service. Step 3: Find the VSS writer's associated Service Display Name in the table below and restart the service.
VSS Writer Service Name Related Service To Restart; ASR Writer: VSS: Volume Shadow Copy: BITS Writer: SPSearch VSS Writer: SPSearch: Windows SharePoint Services Search: SPSearch4 VSS Writer: KB contains some additional steps to follow that have been gleaned from Technet and other related Microsoft VSS subsites.
Find the VSS writer's associated Service Display Name in the table below and restart the service (helpful table below). Figure 2 Open mi-centre.com (Start > Run > mi-centre.com. Info: List of VSS Writers and Services. Skip to end of metadata. Required VSS Writer Name of Controlling Service Service Display Name; SPSearch 4 VSS Writer: Sharepoint OSearch14 VSS Writer: Sharepoint Server Search OSearch VSS Writer: vss; writers; sharepoint; exchange.Download