Installing the Optimized Block-Level Filter Driver on Physical Nodes of a Cluster


The OSDP feature is deprecated from the Commvault software in V11 SP15.

See End-of-Life, Deprecated and Extended Support - Features for information about deprecated features.

Before You Begin

Notes for Microsoft Windows Cluster:

  • Enabling the Optimized Block-Level Replication Filter feature on a cluster node installs the driver on all cluster nodes.
  • The driver installation on a cluster node is not attempted more than once, even if there were errors during the installation.
  • Until you reboot the cluster node, jobs continue to run in checksum mode.


  1. On the command line of the cluster node, type:

    BLKWinSetup.exe -qsnap -op install -path "C:\Program Files\Commvault\ContentStore\Drivers\QSnap2.inf" -bmploc "C:\Program Files\Commvault\ContentStore\bmp"

    where -path is the path to the Commvault software and -bmploc is the path to where the bitmap information is stored.

  2. Reboot the cluster node.

Last modified: 3/12/2019 9:35:29 PM