Logical drive migration for a raid adapter

摘要

A method for migrating data from one level of RAID system to the same or another level of RAID system having the same or a different number of removable and identifiable storage devices and having the same or a different stripe unit size is disclosed. The storage devices can be attached to the system at a number of different attachment points which facilitates replacement or removal of a failed device. The system is represented as a logical media drive. After determining the number of migrations and the direction of migration, a start logical block address and an end logical block address is defined. The migration is performed by moving data from the source physical blocks to the destination physical blocks starting with the physical block corresponding to the start logical block address and continuing to the physical block corresponding to the end logical block address.