Deduplication resides in the backup process in two primary places: backup software and disk libraries. Asigra Inc.'s Televaulting, EMC Corp.'s Avamar and Symantec Corp.'s Veritas NetBackup PureDisk are backup software products that deduplicate data at the host level, minimizing the amount of data that needs to be sent over corporate networks to backup targets or replicated to disaster recovery sites. Disk libraries from Data Domain Inc., Diligent Technologies Corp., Quantum Corp. and Sepaton Inc. deduplicate data at the target, which allows companies to deploy disk libraries without disrupting current backup processes.