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BACKUP STORAGE SYSTEM, BACKUP SYSTEM, DATA BACKUP METHOD AND RECOVERY METHOD
BACKUP STORAGE SYSTEM, BACKUP SYSTEM, DATA BACKUP METHOD AND RECOVERY METHOD
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机译:备份存储系统,备份系统,数据备份方法和恢复方法
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摘要
A backup storage system, a backup system, a data backup method and a recovery method are provided. The backup storage system comprises N storage subsystems, wherein an i(th) storage subsystem is connected with an i+1(th) storage subsystem, the performance of the i(th) storage subsystem is superior to that of the i+1(th) storage subsystem, the capacity of the i(th) storage subsystem is less than that of the i+1(th) storage subsystem, the cost of the unit capacity of the i(th) storage subsystem is higher than that of the i+1(th) storage subsystem, wherein the N is not less than 2, and the i is not less than 1 and not more than N-1. The technical solution can effectively improve the performance of the system without increasing the total cost of the system significantly, thereby improving the cost performance of the system.
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