Alternatively, high availability can be achieved with a single processor with sufficient redundancy, where fail-over is controlled by a combination of the operating system and special hardware features, such as dual disk drives.
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- 另外,高可用性也可以用具有足够冗余度的单一处理器实现,在这种系统中,故障恢复是由操作系统结合专用硬件功能(如双硬件驱动器)控制的。