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通常,DAS设备(即直连的磁盘阵列)是采用RAID(Redundant Arrays of Independent Disks,廉价冗余磁盘阵列)技术的硬件设备。这种由多个硬盘组成的磁盘阵列技术,既扩大存储空间,又降低单位容量成本,提升数据可靠性,还具备容错性。不仅如此,为了达到较高的数据吞吐量,磁盘阵列内部所有接口都采用LVD/IDE技术,包括并发I/O和命令队列特性等都可在磁盘阵列的控制器内部完成。据了解,目前市场上有些磁盘阵
In general, DAS devices (that is, directly attached disk arrays) are hardware devices that employ Redundant Arrays of Independent Disks (RAID) technology. This disk array consisting of multiple hard drives expands storage space while lowering unit capacity costs, improving data reliability and providing fault tolerance. Not only that, in order to achieve high data throughput, all interfaces within the disk array using LVD / IDE technology, including concurrent I / O and command queue features can be done within the disk array controller. It is understood that there are some disk arrays on the market