Abstract: Described herein are techniques for better understanding problems arising in an illustrative information management system, such as a data storage management system, and for issuing appropriate alerts and reporting to data management professionals. The illustrative embodiments include a number of features that detect and raise awareness of anomalies in system operations, such as in deduplication pruning operations. Such anomalies can include delays in the processing of archive files to be deleted and/or delays in the generation of the list of archive files to delete. Anomalies are characterized by frequency anomalies and/or by occurrence counts. Utilization is also of interest for certain key system resources, such as deduplication databases, CPU and memory at the storage manager, etc., without limitation.

Abstract: Apparatuses and methods for assessing the recovery viability of backup databases are provided. Some embodiments may include identifying a selected backup database set from the plurality of backup databases. In some embodiments, each backup database in the selected backup database set is associated with a database in a corresponding database set. Some embodiments may include triggering a first backup configuration check operation for each database in the corresponding database set. Some embodiments may include triggering a restore verification operation for each database in the selected backup database set. Some embodiments may include generating a recovery point objective score for each database in the selected backup database set. Some embodiments may include causing updating of a recovery point objective score interface based on the recovery point objective score for each database in the selected backup database set.

Abstract: This application discloses an automatic switching system and method for a front end processor (FEP). The system includes: at least one external device and a FEP assembly. The FEP assembly is connected to the at least one external device. The FEP assembly provides services upward by using a primary memory, a primary TO manager, a secondary memory, and a secondary TO manager, and is connected downward to the at least one external device by using at least one primary driver and at least one secondary driver. The FEP assembly is configured to use the at least one secondary driver as a new primary driver when there is a fault in a communication link between the at least one primary driver and the at least one external device, to transmit a control instruction to the at least one external device and acquire data from the at least one external device.

Abstract: A clustered pair of storage systems configured for active-active bidirectional synchronous replication expose a stretched volume over paths to both storage systems. Writes to the stretched volume received at each system are replicated to the peer system. The cluster can use a time-to-live (TTL) mechanism by which a non-preferred system continuously requests a TTL grant from the preferred system to remain in the cluster. Algorithms that reduce or avoid data unavailability are described and can include assessing the health of the systems in the cluster. An unhealthy system can trigger a one-sided polarization algorithm to notify the peer system that it is polarization winner. An improved polarization technique using a witness to decide the polarization winner includes a system adding a time delay before contacting the witness if the system is unhealthy. A control component can detect an unhealthy system and disable the active-active bidirectional synchronous replication.

Abstract: Described is a system and method that includes executing, by a processing device, a data risk mitigation service (DRMS), to monitor, for each node of a plurality of nodes in a mesh network, at least one of metadata indicating a health state of a node or a call for help from the node. The method includes determining, by the DRMS, whether the node is in an unstable state in view of the metadata or the call for help from the node. The method includes in response to determining that the node is in the unstable state, rerouting incoming data of the node and evacuating data stored in the node.

Abstract: A workgroup-computing-entity-based fail-safe/evolvable hardware core structure is disclosed which includes a 3-hierarchical-level 6-workgroup-Basic-Building-Block (6-wBBB) created to supplant the node-computing-entity-based non-fail-safe/limited evolvable von-Neumann core structure of 3-hierarchical-level 3-node-BBB, (i.e., base-level IO-devices/mid-level main memory/top-level CPU) and all the first-time fail-safe workgroup systems can be subsequently generated in the second period along the workgroup-computing evolutionary timeline. Furthermore, based on the first 6-wBBB evolvable architecture, the workgroup evolutionary processes can go up to 7 generations in creating all the necessary workgroup-computing entity-based hardware core structures, so that all the real-time intelligent workgroup-computing systems can be generated in the third period along the workgroup-computing evolutionary timeline.

Abstract: According to one embodiment, an information processing apparatus includes a processing circuit. The processing circuit calculates a first input/output error related to normal data and a second input/output error related to pseudo abnormal data different from the normal data, for each of a plurality of autoencoders having different network structures. The processing circuit outputs relational data indicating a relation between the network structure and the first input/output error and the second input/output error.

Abstract: One or more aspects of the present disclosure relate to mitigating data loss resulting from storage device failures. In embodiments, an input/output (IO) workload can be received by a storage array. Further, the IO workload's corresponding IO requests stored in the storage array's cache can be relocated in response to a storage device failure.

Abstract: Apparatus and methods are disclosed, including determining whether firmware has been successfully loaded and whether the firmware version is valid and operable, and if the firmware has not been successfully loaded or the firmware is not valid and operable, tracking a number of unsuccessful attempts to load the firmware or an elapsed time for unsuccessful attempts to load the firmware, and entering a memory device into a reduced-power state if either the number of unsuccessful attempts or the elapsed time has reached a programmable threshold.

Abstract: A plurality of computing devices are communicatively coupled to each other via a network, and each of the plurality of computing devices is operably coupled to one or more of a plurality of storage devices. A plurality of failure resilient address spaces are distributed across the plurality of storage devices such that each of the plurality of failure resilient address spaces spans a plurality of the storage devices. The plurality of computing devices maintains metadata that maps each failure resilient address space to one of the plurality of computing devices. The metadata is grouped into buckets. Each bucket is stored in a group of computing devices. However, only the leader of the group is able to directly access a particular bucket at any given time.

Abstract: Systems and methods that make use of cluster-level redundancy within a distributed storage management system to address various node-level error scenarios are provided. According to one embodiment, a KV store of a node of a cluster of a distributed storage management system manages storage of data blocks as values and corresponding block IDs as keys. Data integrity errors are reported to the first node in the form of a list of missing block IDs that are in use but missing from the KV store. A metadata resynchronization process may then be caused to be performed, including for each block ID in the list of missing block IDs: (i) reading a data block corresponding to the block ID from another node of the cluster that maintains redundant information relating to the block ID; and (ii) restoring the block ID within the KV store by writing the data block to the node.

Abstract: Method and apparatus creating test environments for blockchain systems involving recreating system configurations and state database without block data to set up staging environments for blockchain systems. The example implementations involve a function getting the latest config block and database files of state database from a production environment. Further, there is a function extracting system configurations from the received latest config block, replacing root certifying authority certificate(s) in the system configurations with the certificate(s) for the staging environment, creating a system configuration transaction and sending the system configuration transaction to the staging environment to reflect the system configurations. Further, there is a function extracting a list of states from database files, creating a transaction request message having the list of states and sending a transaction to the staging environment to load the states into the state database.

Abstract: PCIe devices may be connected to a test system for development, quality assurance, manufacturing, design validation, qualification, certification, and other testing. PCIe bus or other unexpected errors can avoid direct capture by the test system. Inserting a PCIe analyzer can capture a trace of PCIe bus data around any specific trigger. Due to the high volume and speed of data crossing the data bus when testing multiple devices, finding a correct trigger for an analyzer trace capture is akin to finding a needle in a haystack. By configuring a specific trigger pattern that the test system can send across the PCIe bus without impacting any of the devices under test, the test system can trigger the analyzer at the precise time needed to capture a PCIe bus data trace around the error.

Abstract: According to an aspects of the present disclosure, an information processing apparatus includes a storage unit configured to store at least one program and at least one processor that reads the at least one program from the storage unit and verifies validity of the read at least one program, wherein the processor executes the at least one program based on a determination that the at least one program is valid, the processor verifies validity of a backup corresponding to the at least one program based on a determination that the at least one program is invalid, and the processor overwrites the at least one program that is stored in the storage unit with the backup corresponding to the at least one program based on a determination that the at least one program is invalid and the backup corresponding to the at least one program is valid.

Abstract: An embodiment may involve persistent storage containing a machine learning trainer application configured to apply one or more learning algorithms. One or more processors may be configured to: obtain alert data from one or more computing systems; generate training vectors from the alert data, wherein elements within each of the training vectors include: results of a set of statistics applied to the alert data for a particular computing system of the one or more computing systems, and an indication of whether the particular computing system is expected to fail given its alert data; train, using the machine learning trainer application and the training vectors, a machine learning model, wherein the machine learning model is configured to predict failure of a further computing system based on operational alert data obtained from the further computing system; and deploy the machine learning model for production use.

Abstract: A memory tier is established in a cluster system having a deduplicated file system. The memory tier includes memory pages configured as huge pages, where writes to the huge pages are exported in a device file that is outside of a user process namespace within which processes of the deduplicated file system run. At least a portion of metadata generated by the deduplicated file system is written to the memory tier. The portion of metadata includes an index of fingerprints corresponding to data segments stored by the deduplicated file system to a storage pool. A determination is made that an instance of the deduplicated file system has failed. A new instance of the deduplicated file system is started to recover file system services by loading the index of fingerprints from the device file.

Abstract: A technique for data reconstruction includes determining a plurality of types of data stored in a storage disk; determining an order in which data reconstruction is to be performed on the plurality of types of data based on corresponding likelihoods that the plurality of types of data are expected to be accessed; and performing the data reconstruction on the plurality of types of data in the determined order. Such a technique can improve system performance during data reconstruction and reduce the access delay.

Abstract: A storage device RAID data write intermediate parity system includes a storage device coupled to a host system and including a storage subsystem and a volatile memory system. The storage device RAID data write intermediate parity system receives first primary data from the host system, and stores the first primary data in the volatile memory system. The storage device RAID data write intermediate parity system then stores a first subset of the first primary data in the storage system, generates first intermediate parity data using the first subset of the first primary data, stores the first intermediate parity data in the volatile memory system and, in response, erases the first subset of the first primary data from the volatile memory system.

Abstract: An error information processing method includes, in response to a memory error triggering an interrupt, collecting error information of the memory error that includes a first memory area where the memory error occurs, obtaining a second memory area for writing log information, determining whether the second memory area contains the first memory area, and, in response to determining that the second memory area contains the first memory area, skipping a process of writing the log information into the second memory area.

Abstract: A display device includes: a first memory storing compensation data and a display driver integrated chip including a compensator converting the input image data into output image data based on the compensation data. The display driver integrated chip includes: a second memory receiving the compensation data from the first memory when the display device is power-on; a third memory included in the compensator, the third memory storing the compensation data received from the second memory; and an error detector detecting an error in the compensation data stored in the third memory by comparing the compensation data stored in the first memory with the compensation data stored in the third memory.