Remote replication over Metropolitan Area Networks (MAN) and Wide Area Networks (WAN) has become increasingly widespread with the mass adoption and deployment of iSCSI-based storage appliances. However, despite its popularity, this activity is not bereft of challenges. One of the biggest challenges now facing replication over significant distances is the delay incurred when doing so.

This whitepaper will examine the impact of transport distance and latency on the efficiency of network bandwidth in WAN remote replication situations over TCP/IP. It will then demonstrate how StorTrends iTX and its powerful WAN acceleration (called WDS) and deduplication technologies improve bandwidth utilization, through sophisticated compression and data reduction techniques.