Abstract: A migration engine is provided for use in a logical namespace of a storage system environment. A remote agent of an integrated management framework is installed on a host machine of the storage system environment and includes a pre-installed migration plug-in module that configures the agent as a migration engine adapted to provide a data migration capability. That is, the migration plug-in has the intelligence to configure the remote agent as a migration engine adapted to perform data migration from a source location to a destination location in the storage system environment.

Abstract: A system and method for management of jobs in the clustered environment is provided. Each node in the cluster executes a job manager that interfaces with a replicated database to enable cluster wide management of jobs within the cluster. Jobs are queued in the replicated database and retrieved by a job manager for execution. Each job manager ensures that jobs are processed through completion or, failing that, are re-queued on another storage system for execution.

Abstract: A system and method for transparently compressing file system data using compression group descriptors is provided. When data contained within a compression group be compressed beyond a predefined threshold value, a compression group descriptor is included in the compression group that signifies that the data for the group of level 0 blocks is compressed into a lesser number of physical data blocks. When performing a read operation, the file system first determines the appropriate compression group that contains the desired data and determines whether the compression group has been compressed. If so, the file system decompresses the data in the compression group before returning the decompressed data. If the magic value is not the first pointer position, then the data within the compression group was previously stored in an uncompressed format, and the data may be returned without performing a decompression operation.

Abstract: A permeable-wall sample holder provides ventilation of vapor-phase entities between the sample and the exterior of the holder through its wall. The vapor-phase transport across the holder wall supports equilibrium of the sample with the analysis environment.

Abstract: A method for distributing a shared secret key among a plurality of nodes is described. Each node establishes a secret key, the number of nodes being more than two nodes. A node distributes by a ring protocol executing over computer network connections an encrypted version of the secret key of each node to other nodes of the plurality of nodes. Each node decrypts the secret keys of other nodes so that each node has the secret key of other nodes. Each node combines the secret keys of other nodes to form a shared secret key available to other nodes.

Abstract: In one embodiment, a primary head-end node (PHE) and one or more backup head-end nodes (BHEs) receive traffic from a common multicast network. The PHE establishes a primary point-to-multipoint (P2MP) tunnel and forwards the multicast traffic onto the primary P2MP tunnel. The PHE then notifies a selected BHE of one or more characteristics of the primary P2MP tunnel, and the selected BHE establishes a backup P2MP tunnel with the characteristics of the primary P2MP tunnel. In response to detecting a failure of the PHE, the BHE initiates forwarding of the multicast traffic onto the backup P2MP tunnel.

Abstract: A method of using of a level meter employing the radar principle, serving to measure the fill level of a medium in a container and incorporating an electric conductor system for conducting an electromagnetic signal into the container and returning reflected components of the electromagnetic signal from the container, the electric conductor system terminating at a predefined level in the container. In practicing the method a variation of the component of the electromagnetic signal reflected at the container-oriented end of the conductor system is utilized as an indicator of the attainment of the predefined fill level by the medium. This permits the detection of very small amounts of a medium for instance in the monitoring of drain pipes, spillway basins or leak-detection systems.

Abstract: The present invention provides a system and method for eliminating duplicate data (de-duplication) in substantially real time using an electronic storage medium.

Abstract: In one embodiment, layer-2 (L2) ports of a network device may each be assigned to a particular virtual service domain (VSD). One or more virtual service engines (VSEs) may also be assigned in a particular order to each VSD, where each VSE is configured to apply a particular service to traffic traversing the VSE between ingress and egress service ports. Interconnecting the L2 ports and the ingress and egress service ports is an illustrative virtual Ethernet module (VEM), which directs traffic it receives according to rules as follows: a) into a destination VSD via the one or more correspondingly assigned VSEs in the particular order; b) out of a current VSD via the one or more correspondingly assigned VSEs in a reverse order from the particular order; or c) within a current VSD without redirection through a VSE.

Abstract: In one embodiment, a surgical instrument includes a first and second lever arms coupled by a first pivot. A ratchet bar is coupled to the first lever arm by a second pivot. The ratchet bar has a toothed portion extending from an interior face of the first lever arm and a paddle portion extending from an exterior face of the first lever arm. A catch is disposed at a proximate end of the second lever arm and arranged to engage teeth of the toothed portion of the ratchet bar. Engagement with the teeth couples the proximate ends of the first and second lever arms. The ratchet bar is further arranged to rotate about the second pivot in response to downward pressure upon the paddle. Depression of the paddle causes the teeth of disengage the catch, decoupling the first and second lever arms.

Abstract: A spreader insert for use with a surgical retractor is provided. The spreader insert includes a circular head with two or more downwardly extending blades. One end of each blade of the insert is rotatably fastened to the head of the insert, such that each blade can be tilted inwardly or extended outwardly from a central axis of the device. Suitable fasteners are provided to rotate the blades from a closed position in which the distal ends of the blades are almost touching each other in order to improve ease of introduction into the surgical field. In an open position, the blades rotate outwardly to hold body tissue in place. Alternatively, the entire spreader insert is machined from a hardenable steel tube, the blades of which are formed so that, when released, they spring outwardly to an open position.

Abstract: A multi-channel time interleaved ADC (TIADC) provides for offset estimation and correction. The correction is accomplished through analog adjustment of offset rather than by digital correction of their outputs. In certain aspects, polarity reversal circuits may be used to further improve performance.

Abstract: A technique is provided for implementing deep-packet inspection (DPI) services in a MPLS/VPN configured computer network. The technique employs a novel self-learning algorithm that analyzes data packets belonging to different unidirectional tunnels in the MPLS/VPN network and determines whether the analyzed data packets transport data in the same VPN. If so, the unidirectional tunnels containing the analyzed data packets are associated with a common layer-2 identification (L2ID) value. Unlike conventional flow-classification procedures, the inventive technique classifies a data packet by first associating the data packet with a L2ID value and then classifying the packet as belonging to a particular data flow based on a novel 6-tuple consisting of a conventional 5-tuple plus the packet's L2ID value.

Abstract: An instrument for establishing orientation of a pelvic prosthesis comprises a tri-pod having an angularly adjustable guide rod on it. The tips of the legs define a plane, and the guide rod is set by the surgeon to a defined orientation with respect to this plane on the basis of preoperative studies. In use, two of the legs of the instrument are positioned by the surgeon at defined anatomical locations on the pelvis (e.g., a point in the region of the posterior/inferior acetabulum and a point on the anterior superior iliac spine). The third leg then lands on the pelvis at a point determined by the position of the first two points, as well as by the separations between the third leg and the other two legs. The separations are adjustable, but are preferably fixed percentages of the separation between the first and second legs. The position of the guide rod then defines with respect to the actual pelvis the direction for insertion of a prosthesis.

Abstract: In one embodiment, a node receives packets from one or more input interfaces, and may place the packets in an appropriate output queue for a corresponding output interface. The node may also place received unmarked packets from each of the input interfaces in a corresponding virtual queue of a virtual scheduler for the corresponding output interface. The virtual scheduler may be served at a configured rate, and any unmarked packets in the virtual queue that exceed a configured threshold may be marked.

Abstract: Embodiments of the present invention provide a novel technique for maintaining directory-based quota, for performing directory notification to a client system, and performing other such operations by efficiently finding ancestral directory associations on a server system without performing multiple accesses to data structures associated with the directory associations. Since data structures do not need to be accessed multiple times, performance of the server system can be improved.

Abstract: The present invention provides a system and method for flexible space reservations in a file system. An administrator of a storage system selects a fractional reserve percentage, which defines the size of the overwrite reserve that is to be maintained to ensure file writeability.

Abstract: A technique dynamically resizes Traffic Engineering (TE) Label Switched Paths (LSPs) at a head-end node of the TE-LSPs in preparation to receive redirected traffic in response to an event in a computer network. The novel dynamic TE-LSP resizing technique is based on the detection of an event in the network that could cause traffic destined for one or more other (“remote”) head-end nodes of one or more TE-LSPs to be redirected to an event-detecting (“local”) head-end node of one or more TE-LSPs. An example of such a traffic redirection event is failure of a remote head-end node or failure of any of its TE-LSPs. Specifically, the local head-end node maintains TE-LSP steady state sampling and resizing frequencies to adapt the bandwidth of its TE-LSP(s) to gradual changes in the network over time.

Abstract: A method for testing a system under test includes defining a test having a number of test elements where at least one of the test elements corresponds to a simulation model with a metric setting. A test vector is defined for the test, and it is used to determine a number of test iterations. The metric setting of the simulation model is mapped to a test variable, and when the test is run metric data is generated from the simulation model during each test iteration. The metric data generated for each test iteration is accumulated and displayed.

Abstract: In one embodiment, a technique is disclosed for calculating a relative pump speed factor for attaining a prescribed hydraulic head or for pumping a prescribed amount of flow. A hydraulic model of a water distribution or collection system is defined to include link elements and node elements. At least one of the node elements represents a fixed-flow variable speed pump (VSP) that delivers a desired amount of flow, a variable speed pump battery (VSPB) that represents multiple VSPs operating in parallel with each other, a VSP with a tank located on the VSP's discharge side, or a VSP with a tank located on the VSP's suction side.