首页>
外国专利>
METHOD AND SYSTEM FOR INCREASING PARALLELISM OF DISK ACCESSES WHEN RESTORING DATA IN A DISK ARRAY SYSTEM
METHOD AND SYSTEM FOR INCREASING PARALLELISM OF DISK ACCESSES WHEN RESTORING DATA IN A DISK ARRAY SYSTEM
展开▼
机译:在磁盘阵列系统中恢复数据时增加磁盘访问的并行性的方法和系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
In a disk array environment such as a RAID-6 environment, the overall performance overhead associated with exposed mode operations such as resynchronization, rebuild and exposed mode read operations is reduced through increased parallelism. By selecting only subsets of the possible disks required to solve a parity stripe equation for a particular parity stripe, accesses to one or more disks in a disk array may be omitted, thus freeing the omitted disks to perform other disk accesses. In addition, disk accesses associated with different parity stripes may be overlapped such that the retrieval of data necessary for restoring data for one parity stripe is performed concurrently with the storage of restored data for another parity stripe.
展开▼