Abstract: System and method for managing different types of snapshots of storage objects stored in a storage system uses a storage structure that includes both a storage object and any snapshots of the storage object. When a request to delete a snapshot of the storage object is received, a determination is made whether the snapshot is a first snapshot type. After determining that the snapshot is not the first snapshot type, the snapshot is deleted from the storage structure. After determining that the snapshot is the first snapshot type, the snapshot is marked as delete designated, and a deletion of the snapshot from the storage structure is prevented when there is a second snapshot type snapshot remaining in the storage structure that was created after the snapshot had been created so that the snapshot is available when the second snapshot type snapshot is subsequently used.

Abstract: System and method for creating linked clones of storage objects stored in a storage uses a target storage structure that includes a linked clone being created from a selected snapshot of a storage object and surface snapshots. The linked clone is created in the target storage structure with references to the selected snapshot of the storage object in a source storage structure without completely copying the selected snapshot to the target storage structure. The surface snapshots, which correspond to other snapshots of the storage object in the source storage structure, are created in the target storage structure with references to the other snapshots without completely copying the other snapshots to the target storage structure to produce the linked clone with similar snapshots as the storage object at a point in time when the selected snapshot was captured.

Abstract: Systems and methods for migration between computing machines are disclosed. The source and target machines can be either physical or virtual; the source can also be a machine image. The target machine is connected to a snapshot or image of the source machine file system, and a redo-log file is created on the file system associated with the target machine. The target machine begins operation by reading data directly from the snapshot or image of the source machine file system. Thereafter, all writes are made to the redo-log file, and subsequent reads are made from the redo-log file if it contains data for the requested sector or from the snapshot or image if it does not. The source machine continues to be able to run separately and simultaneously after the target machine begins operation.

Abstract: Systems and methods for migration between computing machines are disclosed. The source and target machines can be either physical or virtual; the source can also be a machine image. The target machine is connected to a snapshot or image of the source machine file system, and a redo-log file is created on the file system associated with the target machine. The target machine begins operation by reading data directly from the snapshot or image of the source machine file system. Thereafter, all writes are made to the redo-log file, and subsequent reads are made from the redo-log file if it contains data for the requested sector or from the snapshot or image if it does not. The source machine continues to be able to run separately and simultaneously after the target machine begins operation.

Abstract: An extensible data analysis system for analyzing integrated circuit fabrication data produced during integrated circuit fabrication, including an application tier that selectively runs analysis nodes. The application tier has an architecture for optionally including and excluding a desired selection of the analysis nodes. The application tier architecture allows the selection of the analysis nodes to be dynamically added by a user. A data access tier selectively runs data reader nodes. The data access tier has an architecture for optionally including and excluding a desired selection of the data reader nodes. The data reader nodes interpret a desired variety of data source files containing the integrated circuit fabrication data having different formats for access by the application tier. The data access tier architecture allows the selection of the data reader nodes to be dynamically added by the user.