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Vol. 1 No. 5 July 2002

Distance yourself from disaster

@exb Extended SANs aren't cheap Storage area network (SAN) extensions can use IP or Fibre Channel (FC) as the transport mechanism and twisted pair as the transport medium. Using IP for transport is the least expensive method of deploying these types of SANs. SAN extension pricing - using IP and Gigabit Ethernet as the transport mechanism - ranges from $50,000 to $100,000, according to Steve Duplessie, a senior analyst with the Enterprise Storage Group, Milford, MA. "This type of solution involves using the FCIP, [Fibre Channel over IP protocol] an IP device at each end of the extension that, implementing FCIP, encapsulates an IP envelope and de-encapsulates it at the other end of the SAN." The encapsulated FC data runs over IP and Gigabit Ethernet on twisted pair. It can also run over the Internet using VPNs. Additional expenses involve contracting with a managed service provider for IP services. San Jose, CA-based Nishan Systems, for example, offers this type of SAN extension for $30,000 to $50,000 according to Randy Fardal, ...

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