A NetBackup customer needs to improve the RTO after a disaster is declared at the primary data center. They have failed several disaster recovery audits because of extended recovery times You…

HP StoreOnce NAS (Network Attached Storage) interfaces typically rely on Ethernet and file-level access, which can introduce higher latency and lower throughput compared to block-level protocols like FC for large restores.

HP StoreOnce Catalyst is an application-aware interface optimized for backup performance and deduplication efficiency, but the underlying transport can still be Ethernet (NAS) or Fibre Channel (VTL); when comparing pure restore speed, the FC transport offers lower latency than Ethernet options.

HP StoreOnce VTL iSCSI uses standard Ethernet for block-level access, which is generally slower and has higher latency than Fibre Channel for high-performance storage operations, especially over long distances or congested networks.

Fibre Channel (FC) provides a high-speed, low-latency, and dedicated network connection, making HP StoreOnce VTL FC the fastest interface for restoring data. When minimizing RTO, the speed at which data can be read from the backup system and presented to the recovery targets is paramount, and FC's direct block-level access over a high-performance SAN fabric typically outperforms other network-based or iSCSI options for large-scale data recovery.