With document ID c03823106 on 2013/07/10 an advisory for HP Data Protector 6.21, 7.01, 8.00 was released, describing a problem when VSS is used for the backups. In some cases it could happen, that the VSS snapshot is corrupted and Data Protector backed up the corrupted snapshot.
As the root cause is the VSS framework from Microsoft, the fix to solve the problem is delivered by Microsoft – http://support.microsoft.com/kb/2748349. Windows 7 SP1 and Windows 2008 R2 SP1 already contain this fix.
The complete advisory can be read here: http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay/?spf_p.tpst=kbDocDisplay&spf_p.prp_kbDocDisplay=wsrp-navigationalState%3DdocId%253Demr_na-c03823106-1%257CdocLocale%253D%257CcalledBy%253D&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken