Abstract:
A storage management method for use in a storage area network is provided. The storage area network comprises a plurality of host data processors coupled to a storage virtualisation engine, which is coupled to a plurality of physical storage media. Each physical storage media is assigned a tier level. The method comprises providing a storage management policy identifying threshold storage access rates associated with each tier level, mapping blocks of physical storage to corresponding blocks of a virtual disk, and storing metadata associated with a block identifying the tier level of the physical storage to which the block corresponds, mappings between the block and blocks of a virtual disk, and an access rate indicating the rate of access to the data. The access value is periodically compared to at least one threshold rate associated with its tier level. Depending on the result of the comparison, a storage block may then be marked for migration to a physical storage medium of another tier level.
Abstract:
A storage control apparatus, in communication with a cluster of storage devices in a storage network having plural administrator systems, comprises a cluster lock requester component, a cluster lock receiver component and a configuration component, wherein, responsive to receipt of a cluster lock by said cluster lock receiver component, the configuration component is operable to configure a logical resource object within said cluster. The apparatus may also include a cluster lock granter component operable to grant a cluster lock to the cluster lock receiver component responsive to said cluster lock requester component. A method of operating a storage control apparatus includes method steps corresponding to functional components of an apparatus and may be embodied in computer program codes.
Abstract:
A storage control apparatus, in communication with a cluster of storage devices in a storage network having plural administrator systems, comprises a cluster lock requester component, a cluster lock receiver component and a configuration component, wherein, responsive to receipt of a cluster lock by said cluster lock receiver component, the configuration component is operable to configure a logical resource object within said cluster. The apparatus may also include a cluster lock granter component operable to grant a cluster lock to the cluster lock receiver component responsive to said cluster lock requester component. A method of operating a storage control apparatus includes method steps corresponding to functional components of an apparatus and may be embodied in computer program codes.
Abstract:
A storage control apparatus, in communication with a cluster of storage devices in a storage network having plural administrator systems, comprises a cluster lock requester component, a cluster lock receiver component and a configuration component, wherein, responsive to receipt of a cluster lock by said cluster lock receiver component, the configuration component is operabl e to configure a logical resource object within said cluster. The apparatus ma y also include a cluster lock granter component operable to grant a cluster lo ck to the cluster lock receiver component responsive to said cluster lock requester component. A method of operating a storage control apparatus includes method steps corresponding to functional components of an apparatus and may be embodied in computer program codes.