Abstract: Systems and computer program products are provided for optimizing selection of files for eviction from a first storage pool to free up a predetermined amount of space in the first storage pool. A method includes analyzing an effective space occupied by each file of a plurality of files in the first storage pool, identifying, from the plurality of files, one or more data blocks making up a file to free up the predetermined amount of space based on the analysis of the effective space of each file of the plurality of files, selecting one or more of the plurality of files as one or more candidate files for eviction, based on the identified one or more data blocks, and evicting the one or more candidate files for eviction from the first storage pool to a second storage pool.

Abstract: Systems and computer program products are provided for optimizing selection of files for deletion from one or more data storage devices to free up a predetermined amount of space in the one or more data storage devices. A method includes analyzing an effective space occupied by each file of a plurality of files in the one or more data storage devices, identifying, from the plurality of files, one or more data blocks making up a file to free up the predetermined amount of space based on the analysis of the effective space of each file of the plurality of files, selecting one or more of the plurality of files as one or more candidate files for deletion, based on the identified one or more data blocks, and deleting the one or more candidate files for deletion from the one or more data storage devices.

Abstract: Exemplary embodiments for increased in-line deduplication efficiency in a computing environment are provided. In one embodiment, by way of example only, hash values are calculated in nth iterations on data samples from fixed size data chunks extracted from an object requested for in-line deduplication. For each of the nth iterations, the calculated hash values for the data samples from the fixed size data chunks are matched in an nth hash index table with a corresponding hash value of existing objects in storage. The nth hash index table is exited upon detecting a mismatch during the matching. The mismatch is determined to be a unique object and is stored. A hash value for the object is calculated. A master hash index table is updated with the calculated hash value for the object and the calculated hash values for the unique object.

Abstract: Exemplary method, system, and computer program product embodiments for increased in-line deduplication efficiency in a computing environment are provided. In one embodiment, by way of example only hash values are calculated in nth iterations for accumulative data chunks extracted from an object requested for in-line deduplication. For each of the nth iterations, the calculated hash values for the accumulative data chunks are matched in a nth hash index table with a corresponding hash value of existing objects in storage. The nth hash index table is exited upon detecting a mismatch during the matching. The mismatch is determined to be a unique object and is stored. A hash value for the object is calculated. A master hash index table is updated with the calculated hash value for the object and the calculated hash values for the unique object. Additional system and computer program product embodiments are disclosed and provide related advantages.

Abstract: Systems and computer program products are provided for optimizing selection of files for eviction from a first storage pool to free up a predetermined amount of space in the first storage pool. A method includes analyzing an effective space occupied by each file of a plurality of files in the first storage pool, identifying, from the plurality of files, one or more data blocks making up a file to free up the predetermined amount of space based on the analysis of the effective space of each file of the plurality of files, selecting one or more of the plurality of files as one or more candidate files for eviction, based on the identified one or more data blocks, and evicting the one or more candidate files for eviction from the first storage pool to a second storage pool.

Abstract: Systems and computer program products are provided for optimizing selection of files for deletion from one or more data storage devices to free up a predetermined amount of space in the one or more data storage devices. A method includes analyzing an effective space occupied by each file of a plurality of files in the one or more data storage devices, identifying, from the plurality of files, one or more data blocks making up a file to free up the predetermined amount of space based on the analysis of the effective space of each file of the plurality of files, selecting one or more of the plurality of files as one or more candidate files for deletion, based on the identified one or more data blocks, and deleting the one or more candidate files for deletion from the one or more data storage devices.

Abstract: Exemplary method, system, and computer program product embodiments for increased in-line deduplication efficiency in a computing environment are provided. In one embodiment, by way of example only hash values are calculated in nth iterations for accumulative data chunks extracted from an object requested for in-line deduplication. For each of the nth iterations, the calculated hash values for the accumulative data chunks are matched in a nth hash index table with a corresponding hash value of existing objects in storage. The nth hash index table is exited upon detecting a mismatch during the matching. The mismatch is determined to be a unique object and is stored. A hash value for the object is calculated. A master hash index table is updated with the calculated hash value for the object and the calculated hash values for the unique object. Additional system and computer program product embodiments are disclosed and provide related advantages.

Abstract: Exemplary embodiments for increased in-line deduplication efficiency in a computing environment are provided. In one embodiment, by way of example only, hash values are calculated in nth iterations on data samples from fixed size data chunks extracted from an object requested for in-line deduplication. For each of the nth iterations, the calculated hash values for the data samples from the fixed size data chunks are matched in an nth hash index table with a corresponding hash value of existing objects in storage. The nth hash index table is exited upon detecting a mismatch during the matching. The mismatch is determined to be a unique object and is stored. A hash value for the object is calculated. A master hash index table is updated with the calculated hash value for the object and the calculated hash values for the unique object.

Abstract: The invention provides improvements on a digital data processing system of the type having a first set of hosts, storage devices or other components coupled for communication with a first network manager. A second set of components is likewise coupled to a second network manager. Communications between the network managers and their respective sets of components utilize different protocols, the first network manager referring to components of the first set with identifiers that are unique to those respective components under the first protocol, and the second network manager referring to components of the second set with identifiers that are unique to those respective components under the second protocol.

Abstract: An apparatus, system, and method are disclosed for generating a name for a system of devices. An identifier identifies each component in the system. Once each component is identified, information such as the World Wide Name (WWN) of each component is stored in a database. Additional information such as the IP address of each component may also be stored within the database. A comparator then compares a name such as the WWN of each component and selects the name of a selected component based on specified parameters provided by a user. The selected name is modified and then assigned as an identifier of the entire system of devices. The system of devices is thus assigned a unique identifier that remains the same each time those components form a system of devices.

Abstract: A storage area network (SAN) has a plurality of components including digital data processors, e.g., hosts, coupled to a plurality of storage device. Common, platform-independent processes execute on the hosts, which can be of varied platform types, e.g., Unix™, Windows™, Solaris, and so forth. Those processes utilizes the command line interface of the host operating system to invoke platform-dependent processes on the respective hosts. The platform-dependent processes return data to the platform-independent processes, e.g., via Standard Output or Standard Error of the host operating system command line interface.

Abstract: A storage area network (“SAN”) includes one or more digital data processors that are coupled for communication with one or more storage devices (e.g., LUNs) over an interconnect. The improvement provides a mechanism for hierarchically displaying, e.g., on the administrator console or other output device, portions of the SAN topology. It includes a process that generates for application to the output device a plurality of graphical object that represent “segments” of the SAN and/or components of the SAN, along with the interconnections between them. The process selectively responds to operator/administrator selection of any of the graphical objects that represent a segment by regenerating the display to depict the interconnected segments and/or components that make up that segment.

Abstract: The invention provides improvements on a digital data processing system of the type having a first set of hosts, storage devices or other components coupled for communication with a first network manager. A second set of components is likewise coupled to a second network manager. Communications between the network managers and their respective sets of components utilize different protocols, the first network manager referring to components of the first set with identifiers that are unique to those respective components under the first protocol, and the second network manager referring to components of the second set with identifiers that are unique to those respective components under the second protocol.

Abstract: A storage area network (SAN) management and configuration method and apparatus are provided via enabling in-band communications. In the storage area network (SAN) management and configuration method, a SAN management application is utilized for communicating with a device driver. A pass through is provided by the device driver to a host bus adapter (HBA) for passing communications to a device in the storage area network from the SAN management application. The storage area network (SAN) management and configuration apparatus via enabling in-band communications includes a storage area network (SAN) management application for communicating with at least one SAN-connected host system. Each SAN connected host system includes a management application agent for communicating with a host bus adapter (HBA) device driver. The HBA device driver is provided for communicating with a device in the storage area network.

Abstract: The invention provides improvements on a digital data processing system of the type having a first set of hosts, storage devices or other components coupled for communication with a first network manager. A second set of components is likewise coupled to a second network manager. Communications between the network managers and their respective sets of components utilize different protocols, the first network manager referring to components of the first set with identifiers that are unique to those respective components under the first protocol, and the second network manager referring to components of the second set with identifiers that are unique to those respective components under the second protocol.

Abstract: A method, system, and computer program product for providing enhanced management features for a SAN with scalable hosts. Partitioned hosts (or ‘scalable’ hosts) are managed by extending SAN manager host-centric logical views to show (1) the host partition hierarchy and (2) the storage resource ownership for a SAN-attached scalable host. The extended host-centric view includes the host system, hosting OSes (if applicable), hosted OSes for each hosting OS (or the host system), OS volumes for each hosted OS, and logical mapping of each OS volume to the SAN storage resource (logical unit). The SAN manager is extended to also show how hosting (trusted) partitions, blades, and/or cluster members physically connect into a SAN. Users are able to toggle between a host centric view and a physical topology view by selection of items within the interface.

Abstract: The invention provides, in one aspect, a digital data processing system having an interconnect that provides for registration of components communicating thereon. One or more host devices, storage devices or other components are coupled to the interconnect for communication, at least one of them lacking an ability to self-register with the interconnect. Such a component is referred to herein as a non-compliant component. A registration module coupled with the interconnect performs the registration on behalf of the non-compliant component.

Abstract: An storage area network (SAN) has a manager digital data processor that includes a first element that maintains a first representation of the SAN and a second element that maintains a second representation of the SAN. The first element generates notifications of events in the SAN, e.g., addition or removal of components or relationships between components, and includes with them data pertaining to the event. The second element responds to such notifications and data by updating the second representation. That data is preferably sufficient for the second element to update the second representation without further reference to information contained in the representation.

Abstract: A digital data processor of the type used, e.g., in management of a storage area network (SAN), executes a process (a “manager” process) to maintain a representation of the SAN topology or at least an attribute thereof. A graphical output device displays the SAN representation. A further process (a “user interface” process) controls the output device for purposes of displaying that representation. An interface element effects retrieval of the SAN representation, for example, in response to a request from the user interface process. It transmits that representation to the user interface process for display on the graphical output device.

Abstract: The invention provides, in one aspect, a digital data processing system having an interconnect that provides for registration of components communicating thereon. One or more host devices, storage devices or other components are coupled to the interconnect for communication, at least one of them lacking an ability to self-register with the interconnect. Such a component is referred to herein as a non-compliant component. A registration module coupled with the interconnect performs the registration on behalf of the non-compliant component.