Applying Best Practices › Define a Limit to the Quantity of Concurrent Backups

Define a Limit to the Quantity of Concurrent Backups

You can define a limit to the quantity of CA ARCserve D2D backup jobs that run concurrently. This capability lets you optimize the performance of the CA ARCserve D2D virtual machine proxy server in your backup environment. By default, Host-Based VM Backup can run up to ten D2D backup jobs concurrently. In environments that contain many virtual machines that are associated with a CA ARCserve D2D virtual machine proxy system, a high quantity of concurrent backups can have an adverse effect on network and backup performance.

Note: When the quantity of concurrent jobs exceeds the defined limit, the jobs that exceed the limit enter a job queue.

Follow these steps:

1. Log in to the CA ARCserve D2D virtual machine proxy system.
2. Open Windows Registry Editor and browse to the following key:

   HKEY_LOCAL_MACHINE\SOFTWARE\CA\CA ARCSERVE D2D
   

3. Right-click CA ARCserve D2D and select New and click String Value on the pop-up menu.

   Name the key as follows:

   VsphereMaxJobNum
   

4. Right-click VsphereMaxJobNum and click Modify on the pop-up menu.

   The Edit String dialog opens.

5. In the Value Data field, specify the quantity of CA ARCserve D2D backup jobs that you want to allow to run concurrently.
   • Minimum limit--1
   • Maximum limit--none.
6. Click OK. The limit is defined.
7. Restart the CA ARCserve D2D web service.