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Adaptable Modular Storage 2000 is the brand name of Hitachi Data Systems mid-range storage platforms. The Hitachi Adaptable Modular Storage 2000〔(【引用サイトリンク】title= Adaptable Modular Storage 2000 family )〕 family of storage systems was announced in October, 2008. They can be reconfigured and optimized to accommodate changing business requirements. This midrange product family is built around a serial attached SCSI (SAS) architecture and has a symmetric active/active controller design. This family of storage systems include: * Hitachi Adaptable Modular Storage 2100 * Hitachi Adaptable Modular Storage 2300 * Hitachi Adaptable Modular Storage 2500 * Hitachi Adaptable Modular Storage 2500DC All models support RAID-6 disk configurations, Fibre Channel and iSCSI host interfaces, as well as the ability to intermix Flash drives with SAS and SATA disk drives in the same tray. They also support both Fibre Channel and iSCSI host interfaces in the same controller. The AMS 2000 family of storage systems are available with just a few terabytes of storage up to 1,417TB of storage. These storage systems support upgrade in place to larger models of the AMS 2000 family as well as migration to new RAID groups while the system is in operation. == Automated storage controller == Each AMS2000 model comes with dual controllers that automate many storage management tasks. The symmetric active/active architecture〔(【引用サイトリンク】title= HDS Adaptable Modular Storage – Intelligent, Enterprise Class, Modular Storage )〕 with dynamic load balancing provides integrated, automated, front-to-back-end I/O load balancing. In this design both controllers are active and able to dynamically access any volume from a host port on either controller with no penalty on performance. By eliminating the need for each volume to be assigned to an owning controller, servers can be connected to either controller on an AMS2000 without establishing a primary and failover path to their volumes. With this design SAN path management software is not required. Volumes can be accessed from either controller at the same speed. As a result, microcode updates can be done while the system is operating and without any interruption to host I/Os. In addition, the workload of each controller is continually monitored and can be automatically brought into balance whenever necessary. As a result of the monitoring and automated load balancing the utilization imbalances between controllers which traditionally have led to performance bottlenecks can be avoided. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hitachi Adaptable Modular Storage 2000」の詳細全文を読む スポンサード リンク
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