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The iSCSI Subtext to 10-GigE

Growth in 10-Gbit/s Ethernet rollouts may indicate broader deployment of iSCSI SANs.

Think it's a stretch? Let's start at the top. Industry sources say the popularity of 10-Gbit/s Ethernet WAN links is on the rise among carriers, driven by the need to carry multiple traffic types over links that are cheaper than Sonet.

And a significant element in the traffic mix is on- or off-line storage, which along with video and voice-over-IP, is often forcing carriers to double their available bandwidth annually.

A recent report from Heavy Reading states that not only are carriers moving aggressively toward 10-Gbit/s Ethernet in core networks, but they are being pushed toward 100-Gbit/s Ethernet by enterprise customers, including big content providers, who want Ethernet SANs instead of Fibre Channel ones. (See HR Sees Core DWDM Surge.)

At the same time, the increase in iSCSI deployment is nothing less than dramatic. IDC forecasts compound annual growth in iSCSI SAN revenues to be a whopping 74.8 percent from now through 2010, compared to 4.1 percent for Fibre Channel SANs.

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