Patent ID: 8037260

Claim:
A storage system comprising: one or more storage control processors, each said storage control processor connected for communication with one or more storage devices, said one or more storage devices storing data related to input/output (I/O) operations processed by said one or more storage control processors; a plurality of storage control modules; a management processor in communication with said storage control processors; a first type of storage control software executed on a first storage control processor of said storage control processors for processing a first type of said I/O operations; and a plurality of volumes for storing the data, said volumes logically representing storage capacity on said storage devices, wherein a management computer in communication with said management processor is configured to be used to invoke a program executed by said storage management module for uninstalling said first type of storage control software from a first storage control module of said storage control modules, said first storage control module containing said first storage control processor, wherein said program preserves configuration information of first volumes of said plurality of volumes controlled by said first type of storage control software, and LUN security information, before releasing said first volumes.