Relevant to all versions.
For CIFS and JCIF Shares
When running a Discover scan, the scanner will touch the files, therefore resetting the last access date. By default, Discover will restore the last access date back to the original value.
There is a directive that can change the default behavior, so that the last access date is modified. The directive is in the file \Vontu\Protect\config\Crawler.properties or \SymantecDLP\Protect\config\Crawler.properties.
Change the following values from "true" to "false":
# Should the file system crawler reset the last accessed date of scanned files? Mounter only filesystemcrawler.resetlastaccessed = true
NOTE: This does not apply to NFS and DFS shares.