NetEx Speeds Data Transfers, Replication

Distance is the key difference between disaster preparedness and mere high-availability systems. Unfortunately, with distance comes latency, and latency can really kill the performance of TCP/IP applications. Add in even a tiny bit of data loss, say one in a million packets, and TCP/IP scales back its data-transfer window, dropping the effective data-transfer rate of your cross-country T-3 line to as little as 10 Mbps. NetEx's HyperIP appliances can boost link utilization for common replication

Howard Marks, Network Computing Blogger

April 14, 2008

1 Min Read
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Distance is the key difference between disaster preparedness and mere high-availability systems. Unfortunately, with distance comes latency, and latency can really kill the performance of TCP/IP applications. Add in even a tiny bit of data loss, say one in a million packets, and TCP/IP scales back its data-transfer window, dropping the effective data-transfer rate of your cross-country T-3 line to as little as 10 Mbps. NetEx's HyperIP appliances can boost link utilization for common replication applications to 90% by replacing TCP across the WAN link with a protocol that can have more data in flight across the net between acknowledgments.HyperIP has been tested and certified to speed bulk data transfers and replication. HyperIP has been qualified with EMC's SRDF, HDS' TrueCopy, and NetApp's SnapMirror. One hardware model handles data transmission rates up to 800 Mbps with software license keys that enable the amount of bandwidth you purchase.

NetEx has long offered no-charge, 10-day upgrade keys so you can sync data back after a disaster.

In our briefing a few weeks ago I asked why they didn't offer a similar license for the initial data synchronization. According to a press release I got just before Storage Networking World, they do. I couldn't get them to call it the Marks Option, though.

Even worse, I couldn't get them to give me stock options. Oh, well.

About the Author

Howard Marks

Network Computing Blogger

Howard Marks is founder and chief scientist at Deepstorage LLC, a storage consultancy and independent test lab based in Santa Fe, N.M. and concentrating on storage and data center networking. In more than 25 years of consulting, Marks has designed and implemented storage systems, networks, management systems and Internet strategies at organizations including American Express, J.P. Morgan, Borden Foods, U.S. Tobacco, BBDO Worldwide, Foxwoods Resort Casino and the State University of New York at Purchase. The testing at DeepStorage Labs is informed by that real world experience.

He has been a frequent contributor to Network Computing and InformationWeek since 1999 and a speaker at industry conferences including Comnet, PC Expo, Interop and Microsoft's TechEd since 1990. He is the author of Networking Windows and co-author of Windows NT Unleashed (Sams).

He is co-host, with Ray Lucchesi of the monthly Greybeards on Storage podcast where the voices of experience discuss the latest issues in the storage world with industry leaders.  You can find the podcast at: http://www.deepstorage.net/NEW/GBoS

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