Method and system for restoring data redundancy in a storage system without a hot standby disk

摘要

A method and system for restoring data redundancy in a storage system without a hot standby disk is disclosed. Instead of having a hot standby disk, reserve storage space is maintained in a plurality of data storage devices in the storage system. The reserve storage space comprises unallocated storage space in the plurality of data storage devices. Once a data storage device failure is detected, data redundancy is restored on the reserve storage space.