Which target emulation on an HPE StoreOnce 3660 provides the highest performance?
HPE StoreOnce Catalyst outperforms both traditional VTL and NAS target emulations because it is purpose-built for data protection rather than emulating a generic tape or file interface. Within Catalyst, the High Bandwidth option performs deduplication entirely on the StoreOnce appliance (target-side) rather than doing source-side hashing on the backup media server, which removes the CPU overhead of client-side deduplication and yields the fastest ingest throughput on well-connected, low-latency links such as a local Fibre Channel or high-speed Ethernet connection. Low Bandwidth Catalyst trades some raw throughput for reduced network utilization by deduplicating at the source, making it the right choice for constrained WAN links but not the configuration that delivers the highest raw performance.
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