In veritas netbackup for DB2 on AIX, the backup was succesful and it created 4 image files.
But when restoring only one image restored successfully. Restore with all the other images failed.
error on db2 command prompt:
"SQL2025N An I/O error "515" occurred on media "VENDOR"."

Details on symantic restore activity

"1/5/2013 1:38:29 PM - Info bptm(pid=6640) INF -...