Hi,
the sources for 6.11 are no longer available, as this version is out of support since April. On site www.hp.com/go/dataprotector the source for DP 7 and DP 8 are available. Via http://support.openview.hp.com you can download all versions, including DP 6.11. You need a valid support contract to download the sources and patches from this site.
Best regards
Daniel
