Synology DiskStation User's Guide
Based on DSM 3.1
87 Chapter 7: Set Up File Sharing
To index files in a shared folder:
1 Select the shared folder you want to index.
2 Click Edit and then click the File Indexing tab.
3 Tick Enable file indexing.
4 Click OK.
Note: See "Access Files via File Browser" on Page 94 for more information about File Browser.