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LinuxPlanet: StaQWare: High Availability for Cobalt RaQ3i Servers

Sep 19, 2000, 14:54 (0 Talkback[s])
(Other stories by Lisa Phifer)

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"Anyone in the hosting business knows that high availability is absolutely required. The real questions: how much do you need, how do you ensure it, and how much to spend in doing so. A plethora of alternatives exist, from fault-tolerant servers to hardware load balancers to open source software. Those with a bankroll can spend anywhere from $7K to $70K on high-speed switching and traffic management boxes that transparently distribute load and bypass failed nodes. Enterprising admins with time but no cash can dig into heartbeat and takeover code being developed by the High-Availability Linux Project."

"Near the low end of this price/feature spectrum is StaQWare, a high-availability solution for Cobalt RaQ3i server clusters. This $999 software add-on provides continuous system monitoring, unattended fail-over, and real-time data synchronization for a redundant pair of identical RaQ3i's. Providers using this high-density 1U Cobalt box to host customer web, file, mail, and name services can employ StaQWare to ensure up to 99.9 percent availability...."

"Each HA solution makes a tradeoff between capital investment, cost of operation, performance overhead, and achieved RAS. Deciding how much availability is enough for your business and your customers is the first step. Understanding what each alternative does -- and doesn't -- do is the next. To that end, we took a hands-on look at StaQWare in our test lab."

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