High-availability systems vendors

Marathon Technologies Corp.

Boxboro, Mass.

Marathon markets its Endurance 6200 software and PCI cards through value-added resellers, which bundle it with servers to create a continuous computing system Windows NT Server, Windows 2000 Server and Exchange Server 2000. Pricing varies with the configuration. The company claims its pricing is competitive with Stratus' ftServer systems.

Stratus Technologies International Inc.

Maynard, Mass.

Stratus sells the ftServer 3200 and 5200 fault-tolerant servers for Windows, which start at $18,443. It also markets the more scalable, high-end Continuum Series systems, which use HP PA-RISC processors and support HP-UX or Stratus' proprietary Virtual Operating System.

Unisys Corp.

Blue Bell, Pa.

Unisys offers a clustered version of its high-end ES7000 system, which supports Windows 2000 Datacenter Server for higher reliability. The system is more expensive than fault-tolerant Windows-based servers from Marathon and Stratus, but with support for up to 32 processors, it's also more scalable. Unisys' proprietary Cellular MultiProcessing (CMP) technology also lets users create processor partitions to allow applications to run as though they were on separate servers. System pricing typically starts at around $100,000.

Compaq Computer Corp.


Compaq's NonStop Himalaya fault-tolerant servers use a proprietary hardware and software design that can scale to hundreds of processors to handle heavy transaction processing and e-commerce applications. Pricing starts at about $70,000.

-- Robert L. Mitchell

Copyright © 2001 IDG Communications, Inc.

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