Once you've loaded noncritical Web, file and print servers onto virtual machines, you get the itch to consolidate even more. But you draw the line at servers that run business-critical applications and need fail-over systems, right? Well, check out Marathon Technologies Corp.'s everRun VM software, now in beta. Steven Keilen, vice president of marketing at the Littleton, Mass.-based company, says the product lets you choose from three levels of fail-over protection: basic fail-over; component-level fault tolerance; and system-level fault tolerance, called LockStep.
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