NEC Corporation's Express5800/320La is the first commercially available general-purpose server offering hardware fault tolerance for Linux. Intended for standalone use or as an element in a high-availability cluster, this server features redundant CPUs, memory, disk, I/O and power. Hardware failover circuitry allows normal operation to continue despite loss of any single unit. Hot-swap capability extends beyond the usual power supply and disk. If a CPU, RAM or I/O card fails on this system, it is isolated and processing continues without interruption. You may replace the failed item at your convenience, without taking the entire system down. This could provide significant cost savings, for example, to a company needing servers that are always up, at far-flung locations where technical support might be hours away. Applications require no high-availability modifications to use this system as a standalone server, nor do they require failover scripts and planning.
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