CISE Research Resources: Instrumentation Support for Very Large Data Stores

EIA 02-24439Grunwald，Dirk C.University of Colorado标题：CISE RR：对超大型数据存储的仪器支持这个建议，设计了一个使用大规模空闲磁盘阵列（MAID）的系统，作为通常使用磁带存档的数据中心的替代品，将利用基础设施来设计和制造传统大容量存储系统的替代设计，以解决关键数据中心问题，作为数据密度（即，减少的占地面积）、可靠性、功率效率和可靠性。使用商品磁盘驱动器，电源管理，分布式控制和缓存层次结构的组合，研究人员声称，MAID存储组织提供的存储密度匹配或超过磁带库的性能类似于磁盘阵列。研究表明，通过将各个驱动器的有效电源管理和缓存相结合，可以使用非常小的功率包络来实现此性能。大型备份存储将由廉价的IDE磁盘组成，这些磁盘在不使用时可以闲置，而不是旋转。主要目标包括用替代技术取代传统的存档磁带存储，同时大幅降低电力成本。该实验测试平台由120个IDE驱动器组成，每个驱动器包含160 GB的数据，总共19.2 TB的在线存储空间，一旦解决冗余问题，其中约160 TB将可用。该基础架构还包括120个驱动器机箱，可将商用IDE驱动器连接到1394（火线）I/O网络。

EIA 02-24439Grunwald, Dirk C.University of ColoradoTitle:CISE RR: Instrumentation Support for Very Large Data Stores This proposal, designing a system using Massive Arrays of Idle Disks (MAID) as a replacement for data centers that would normally use tape archives, will utilize infrastructure in the design and fabrication of an alternative design to conventional mass storage systems that attempt to address critical data center issues such as data density (i.e., reduced floor space), reliability, power efficiency, and manageability. Using a combination of commodity disk drives, power management, distributed control, and caching hierarchy, the researcher claims that the MAID storage organization provides storage densities matching or exceeding those of tape libraries with performances similar to disk arrays. Studies have shown that through a combination of effective power management of individual drives and caching, this performance can be achieved using a very small power envelope. The large backing store will be composed of inexpensive IDE disks that, rather than spinning, are allowed to go idle when not in use. The main goal consists of replacing conventional tape archival storage with an alternative technology at significantly reduced power cost. The experimental testbed consists of 120 IDE drives, each of which holds 160GB of data for a total of 19.2TB of online storage, of which approximately 160TB would be available once redundancy is addressed. The infrastructure also includes 120 drive enclosures that connect commodity IDE drives to 1394 (firewire) I/O networks.