智能存储系统

"The intelligent storage systems are the feature-rich RAID arrays that provide highly optimized I/O processing capabilities. These arrays have an operating environment that controls the management, allocation, and utilization of storage resources. These storage systems are configured with large amounts of memory called cache and use sophisticated algorithms to meet the I/O requirements of performance sensitive applications."

这是《Information Storage and Management》书中对智能存储系统的定义。可以看到，满足以下几点的就可以称为智能存储。

1.比一般的RAID阵列有更多扩展功能。当然现在的存储系统不只是RAID，还有Storage Pool，分布式存等功能，本地远程复制等等强功能。

2.存储系统有专门控制与管理的操作系统。例如Ckariion的Flare，Symmetrix的Enginuity。

3.具有自有的缓存机制用来加速I/O处理。缓存的大小和速度直接反映的存储系统性能和档次。