With special attention towards large enterprise customers, there are many easy justifications for products like HyperIP from Netex:
"Replicating enterprise data sets between data centers with NetEx ensures that compliance standards for records maintenance are achieved, eliminating exposure to regulatory sanctions and lawsuits. Additionally, by simplifying and accelerating data replication as part of a corporate business continuity and disaster recovery plan, HyperIP helps companies slash expenses for data management chores that account for 21 percent of overall IT costs, according to one study."
Transfer speed in HyperIP has been qualified by a regular who's who list in the enterprise data management applications market: EMC, Hitachi, IBM, Netapp, Oracle and Symantec.
Privately held Netex is a spin-off of StorageTek and is based in Maple Grove Minnesota. Last December they unveiled a version of HyperIP for VMWare ESX server. "With HyperIP for VMware, customers can scale performance up to 600x with no hardware upgrades, the company says."
Last September I looked at the WAN Optimization market and some highlighted products -- this will continue to be a hot market in 2008.