Buffalo TS-XL User Manual page 48

TeraSearch
TeraSearch lets you easily find files on
your TeraStation. It indexes Word, Excel,
PowerPoint, pdf, html, text, and other files. To
use it, open the share that you want to be able
to search, such as share, by clicking on its
name in Shared Folders/Folder Setup.
Put a check next to Include folder in search
indexing and click Save.