公开(公告)号：US20040128442A1

公开(公告)日：2004-07-01

申请号：US10667127

申请日：2003-09-18

Applicant: Netezza Corporation

Inventor： Foster D. Hinshaw ,  Vincent F. Femia ,  Craig S. Harris ,  John K. Metzger ,  David L. Meyers ,  Barry M. Zane

IPC: G06F012/00

CPC classification number: G06F11/2069 ,  G06F11/2071 ,  G06F11/2082

Abstract: A disk is segmented into a first data segment and a secondary data segment. The secondary data segment stores a logical mirror of the first data segment of another disk. Fast access to data stored on the disk is provided by partitioning the disk such that the first data segment includes the fast tracks of the disk and the secondary data segment includes the slow tracks of the disk and forwarding all data requests to the first data segment. Upon detecting a failure, the logical mirror of data stored in the first data segment of the failed disk is accessible from the secondary data segment of a non-failed disk. The first data segment can be rebuilt quickly on another disk from the logical mirror stored in the secondary data segment.

Abstract translation: 磁盘被分割成第一数据段和辅助数据段。 辅助数据段存储另一个磁盘的第一个数据段的逻辑镜像。 通过对磁盘进行分区来提供对磁盘上存储的数据的快速访问，使得第一数据段包括磁盘的快速轨道，次要数据段包括磁盘的慢磁道并将所有数据请求转发到第一数据段。 在检测到故障时，存储在故障磁盘的第一数据段中的数据的逻辑镜像可从非故障磁盘的辅助数据段访问。 可以从存储在辅助数据段中的逻辑镜像在另一个磁盘上快速重建第一个数据段。