Abstract: The concepts and technologies disclosed herein are directed to alarm correlation and ticketing for reconfigurable optical add/drop multiplexer (“ROADM”) networks. According to one aspect disclosed herein, a ROADM controller can create, based upon data associated with a plurality of ROADM network elements operating in a ROADM network, a graph of the plurality ROADM network elements. The ROADM controller can retrieve a plurality of alarms from at least a portion the plurality of ROADM network elements, associate the plurality of alarms with at least the portion of the plurality of ROADM network elements, and associate a direction of each alarm with a corresponding service direction. The ROADM controller can eliminate any alarms with a time stamp outside of a same time window. The ROADM controller can then determine that any remaining alarms are associated with a root cause of a failure within the ROADM network.

Abstract: The present disclosure provides an inductive magnetic sensor, which includes a signal pre-amplifying measurement circuit, a feedback loop, a magnetic core and coil group, a low-noise autozero processing circuit, and an output protection module. The magnetic core and coil group is electrically connected between the signal pre-amplifying measurement circuit and the feedback loop, the signal pre-amplifying measurement circuit comprises the low-noise autozero processing circuit, and the feedback loop and the low-noise autozero processing circuit are electrically connected to the output protection module respectively. By introducing the resonant notch filter, it may extend the passband to the low frequency, and extend the low-frequency characteristic of the magnetic sensor, to obtain a better low-frequency magnetic sensor. The present disclosure further provides an electromagnetic prospecting equipment.

Abstract: The present invention provides a method, a system, and a device for a hash generation and network traffic detection. It uses a method of storing intermediate calculation results to perform hash calculation for streaming data, and uses a matrix multiplication operation as a strong hash algorithm to reduce memory occupation. The present invention can generate hash in real time in the case of streaming data comprising defects, unordered, and overlapping, which is suitable for detecting files from network traffic, and is applicable to virus detection, intrusion detection, data anti-leakage, network content review, digital forensics, digital rights protection, and other fields.

Abstract: The present disclosure discloses a modular large spherical tank internal detection device with a self-locking function, and belongs to the technical field of safety detection of large spherical tanks. The detection device includes a transmission group and a detection group. A movable pin is matched with the rotation of a second motor in an unconnected state, so that inner central shafts rotate to realize up-down movement of a detecting instrument in a vertical plane. The movable pin is matched with the rotation of a first motor in a connected state, so that the whole detection device rotates round a central axis of a large spherical tank to realize horizontal circumferential movement of the detecting instrument. All detection of a spherical surface inside the large spherical tank can be completed by combining two types of movement of the detecting instrument.

Abstract: A storage system includes stripes, extents included in one stripe among the stripes reside on storage devices in the storage system, respectively, and the storage system includes an address mapping between the stripe and storage devices where the extents reside. Regarding one extent, a storage device where the extent resides is determined among the storage devices based on the address mapping. The stripe is added to a rebuild list of the storage system in accordance with determining the storage device is a failed storage device, the rebuild list comprising a stripe that is to be rebuilt in the storage system. The storage system is rebuilt based on stripes in the rebuild list. Accordingly, the performance of a rebuild operation may be improved, and the time for the rebuild operation may be reduced. Further, there is provided a corresponding device and computer program product for managing a storage system.

Abstract: Embodiments of the present disclosure provide a method, apparatus and computer readable medium for managing a plurality of disks. The method includes in response to receiving a write request for a first stripe of a redundant array of independent disks (RAID), searching for extents mapped to the first stripe. The RAID is created on a plurality of extents obtained by dividing a plurality of disks. The method further includes, in response to the extents mapped to the first stripe being missed, selecting a first set of extents in a free state from the plurality of extents of the plurality of disks. The method further includes mapping the first stripe to the first set of extents.

Abstract: Techniques involve avoiding a potential failure event on a disk array. Along these lines, data collected for a disk array are obtained. It is determined, based on the collected data, whether a potential failure event is to occur on the disk array. In response to determining that the potential failure event is to occur on the disk array, an action to be taken for the disk array is determined, to avoid occurrence of the potential failure event.

Abstract: Techniques manage a redundant array of independent disks. In such a technique, an instruction to expand the RAID is received, the RAID being formed by a first group of storage devices and including a first group of RAID extents. A second group of RAID extents created on a second group of storage devices and logical units are created on the second group of RAID extents. In response to receiving an indication for a failure of the creation of the second group of RAID extents or the logical units, a notification is generated for indicating a failure of the expansion of the RAID without triggering a shuffling operation, the shuffling operation causing storage extents in the first and second groups of RAID extents to be distributed in the first and second groups of storage devices.

Abstract: Techniques involve: in accordance with a determination that a target disk in a set of disks is to be replaced, determining whether the target disk is a user disk for storing user data; in response to the target disk being the user disk, searching for a spare disk in the set of disks available for replacing the target disk; and in accordance with a determination whether the set of disks include a spare disk available for replacing the target disk, generating an indication of whether or not to provide a warning of replacing the target disk. Such techniques may more accurately provide warning of disk replacement.

Abstract: Techniques involve: in accordance with a determination that a target disk in a set of disks is to be replaced, determining whether the target disk is a user disk for storing user data; in response to the target disk being the user disk, searching for a spare disk in the set of disks available for replacing the target disk; and in accordance with a determination whether the set of disks include a spare disk available for replacing the target disk, generating an indication of whether or not to provide a warning of replacing the target disk. Such techniques may more accurately provide warning of disk replacement.

Abstract: A storage system includes stripes, extents included in one stripe among the stripes reside on storage devices in the storage system, respectively, and the storage system includes an address mapping between the stripe and storage devices where the extents reside. Regarding one extent, a storage device where the extent resides is determined among the storage devices based on the address mapping. The stripe is added to a rebuild list of the storage system in accordance with determining the storage device is a failed storage device, the rebuild list comprising a stripe that is to be rebuilt in the storage system. The storage system is rebuilt based on stripes in the rebuild list. Accordingly, the performance of a rebuild operation may be improved, and the time for the rebuild operation may be reduced. Further, there is provided a corresponding device and computer program product for managing a storage system.

Abstract: Various embodiments of the present disclosure generally relate to a method and a device for managing a hybrid storage disk array. Specifically, the method can include: in response to a first data portion of a first extent in a first set of extents of a first type of storage disk being unavailable, obtaining a metadata portion of a second extent in a second set of extents of the second type of storage disk. The method can also include: reading from the metadata portion reconstruction information for reconstructing the first data portion; and reconstructing, based on the reconstruction information, the first data portion on a third extent in the first set of extents. In addition, there is also provided accordingly a system, an apparatus and a computer program product.

Abstract: Techniques involve avoiding a potential failure event on a disk array. Along these lines, data collected for a disk array are obtained. It is determined, based on the collected data, whether a potential failure event is to occur on the disk array. In response to determining that the potential failure event is to occur on the disk array, an action to be taken for the disk array is determined, to avoid occurrence of the potential failure event.

Abstract: Isolated or recombinant anti-LGR4 monoclonal antibodies are provided. In some cases, antibodies of the embodiments can be used for the detection, diagnosis and/or therapeutic treatment of human diseases, such as cancer.

Abstract: Techniques manage a redundant array of independent disks. In such a technique, an instruction to expand the RAID is received, the RAID being formed by a first group of storage devices and including a first group of RAID extents. A second group of RAID extents created on a second group of storage devices and logical units are created on the second group of RAID extents. In response to receiving an indication for a failure of the creation of the second group of RAID extents or the logical units, a notification is generated for indicating a failure of the expansion of the RAID without triggering a shuffling operation, the shuffling operation causing storage extents in the first and second groups of RAID extents to be distributed in the first and second groups of storage devices.

Abstract: Graph-based detection systems and techniques are provided to identify potential malicious lateral movement paths. System and security events may be used to generate a network connection graph and detect remote file executions and/or other detections, for use in tracking malicious lateral movement across a computer network, such as a compromised computer network. Lateral movement determination across a computer network may be divided into two subproblems: forensic analysis and general detection. With forensic analysis, given a malicious node, possible lateral movement leading into or out of the node is identified. General detection identifies previously unknown malicious lateral movement on a network using a remote file execution detector, and/or other detectors, and a rare path anomaly detection algorithm.

Abstract: The present invention provides a method, a system, and a device for a hash generation and network traffic detection. It uses a method of storing intermediate calculation results to perform hash calculation for streaming data, and uses a matrix multiplication operation as a strong hash algorithm to reduce memory occupation. The present invention can generate hash in real time in the case of streaming data comprising defects, unordered, and overlapping, which is suitable for detecting files from network traffic, and is applicable to virus detection, intrusion detection, data anti-leakage, network content review, digital forensics, digital rights protection, and other fields.

Abstract: Various embodiments of the present disclosure generally relate to a method and a device for managing a hybrid storage disk array. Specifically, the method can include: in response to a first data portion of a first extent in a first set of extents of a first type of storage disk being unavailable, obtaining a metadata portion of a second extent in a second set of extents of the second type of storage disk. The method can also include: reading from the metadata portion reconstruction information for reconstructing the first data portion; and reconstructing, based on the reconstruction information, the first data portion on a third extent in the first set of extents. In addition, there is also provided accordingly a system, an apparatus and a computer program product.

Abstract: Technology for relocating data stored in an end of life source storage drive that identifies individual destination drive extents corresponding to drive extents located in the source storage drive by selecting individual storage drives within a set of healthy storage drives in a group of storage drives in a round robin manner and identifying an individual destination drive extent from each selected storage drive. The corresponding destination drive extents replace the drive extents located in the source storage drive, and are used to store data copied from the drive extents located in the source storage drive. Data is copied in parallel from a set of multiple drive extents located in the source storage drive that is selected based on the current total input/output load determined for each storage drive in the set of healthy storage drives, and on the storage drives on which the corresponding destination drive extents are located.