What model Clariion are you running (200,400,...)? How many drives and what type (SCSI/SATA)? Configured as what type of array/LUN(s)? How many/what type of GBIC/HBA's? ...
Melissadata's Mailers+4 comes to mind, has build in merge purge capabilities and will accept most formats. Includes USPS CASS/LOT/DPV functionality as well.