DFS is delivered as a part of the NSS rpm on the OES 2 and later versions. When you upgrade NSS, the DFS binaries are automatically upgraded. After the upgrade, for DFS to function properly, you must restart the daemons in the following order:
(Optional) Restart vldb, if the server is a VLDB replica.
All the above binaries are located in the /opt/novell/nss/sbin directory.