To update the properties, follow these steps: This section provides steps and preferred practices for configuring and setting up Commvault  for backup and restore. It also provides Commvault parameters and settings for best  performance with ProtecTIER FSI (versions earlier than 3.4) for Windows based servers  through the CIFS protocol (FSI-CIFS) and for UNIX clients through the NFS protocol  (FSI-NFS). Note:  ProtecTIER GA Version 3.4 was released with only the Virtual Tape Library (VTL)  interface support. File System Interface (FSI) support was added to ProtecTIER PGA 3.4  Version. For details, see the announcement letter: http://www.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/6/872/ENUSA P16-0076/index.html&lang=en&request_locale=en This section provides steps and preferred practices for configuring and setting up Commvault  for backup and restore in an FSI-CIFS environment. To add a disk library, complete the following steps: 2 Source:  http://www.commvault.com Chapter 18. Commvault  271 3. Click  Add >>  to move the MediaAgents to the Selected MediaAgents pane. 2. Select the MediaAgents whose devices you want to detect or display from the Available  MediaAgents pane.  1. From the Control Panel, double-click  Library and Drive Configuration . 3. Select  Properties . Additional data paths for the primary copy can be defined on the Data  Paths tab of the Copy Properties dialog box (Figure 18-17).$^{2}$  2. Right-click the policy that you need to update. 1. In the CommCell browser window, navigate to  Storage Policies . Figure 18-17 Adding new data paths 2 18.3 Commvault FSI 18.3.1 Setting up backup and restore in a CIFS environment Adding a disk library