Abstract: Metadata of a target data record set population is used to generate a test data record set population for use in data storage system testing. The metadata includes values for metadata parameters for individual target data record sets. The target data record set population as a whole has metadata parameter values distributed among sets of value ranges. A group of proportions is calculated for each set of value ranges. A test data record set population is generated based on the groups of proportions. As generated, the test data record set population meets a set of predetermined criteria.

Abstract: Methods, systems, computer-readable media, and apparatuses for providing testing environments using virtualization are presented. In one or more embodiments, a computer system may receive, from a client computing device, a software application. Subsequently, the computer system may receive, from the client computing device, a set of one or more testing parameters for testing the software application. Then, the computer system may create, based on the set of one or more testing parameters for testing the software application, a testing environment for the software application using a native hardware layer that represents hardware on which the software application is configured to be executed. Thereafter, the computer system may initiate a testing session in which software application is executed in the testing environment. Subsequently, the computer system may provide, to the client computing device, a control interface for controlling the testing session.

Abstract: A host-side network processing device coupled between a storage system and a host machine may encode a data object according to a sharding technique. Encoding the data object may include receiving, from the host machine, a data object and a request to store the data object. The network processing device may send a request for a plurality of storage locations to the storage system. The network processing device may receive a location list including a plurality of location identifiers from the storage system, where each location identifier corresponds to a respective storage location. The network processing device may determine an encoding matrix and encode the data object into a plurality of shards based on the encoding matrix according to a sharding technique. The network processing device may generate a plurality of storage requests that each specify a different location identifier and that each includes a respective shard.

Abstract: For efficient high availability for a multi-node cluster using a processor device in a computing environment, using duplicate, standby host-bus adaptors (HBAs) for alternate nodes with respect to a node with the duplicate, standby HBAs using duplicate credentials of active HBAs of the node for shutting down the node, taking an active HBA of the node offline, and/or activating one of the alternate nodes.

Abstract: An information handling system and method provides basic input/output system (BIOS) recovery. At a baseboard management controller (BMC), a basic input/output system (BIOS) boot failure is detected. A non-volatile memory device a recovery image is obtained. The recovery image comprises instructions to perform a system software management (SSM) task. The instructions to perform the SSM task are executed. The execution comprises loading a BIOS image from a BMC persistent storage memory device, verifying the BIOS image, and writing the BIOS image to a BIOS non-volatile memory device. The system and method may utilize a recovery flash memory device attached to the BMC, a recovery flash memory device attached to a southbridge portion of a chipset, or a combination thereof to perform the BIOS recovery.

Abstract: A distributed system for creating a checkpoint for a plurality of processes running on the distributed system. The distributed system includes a plurality of compute nodes with an operating system executing on each compute node. A checkpoint library resides at the user level on each of the compute nodes, and the checkpoint library is transparent to the operating system residing on the same compute node and to the other compute nodes. Each checkpoint library uses a windowed messaging logging protocol for checkpointing of the distributed system. Processes participating in a distributed computation on the distributed system may be migrated from one compute node to another compute node in the distributed system by re-mapping of hardware addresses using the checkpoint library.

Abstract: The method begins with a processing module determining whether to reconstruct data corresponding to a plurality of data slices when the plurality of data slices is to be transferred from a first type of memory device to a second type of memory device. The method continues with the processing module retrieving the plurality of data slices from a first set of memory devices that are of the first type of memory, reconstructing at least a portion of the data from the plurality of data slice in accordance with a first error coding dispersal function to produce reconstructed data, encoding the reconstructed data in accordance with a second error coding dispersal function to produce a second plurality of data slices, and storing the second plurality of data slices in a second set of memory devices that are of the second type of memory when the data is to be reconstructed.

Abstract: Hardware component repair in a computing system while workload continues to execute on the computing system includes receiving an indication that an operational parameter of a first hardware resource of said computing system does not meet operational acceptability criteria; migrating workload of the computing system from said first hardware resource to a second hardware resource within the computing system; and halting operation of said first hardware resource for repair.

Abstract: The present invention provides a microcontroller which can continue operation even at the time of a failure without making a memory redundant to suppress increase in chip area. The microcontroller includes three or more processors executing the same process in parallel and a storage device. The storage device includes a memory mat having a storage region which is not redundant, an address selection part, a data output part, and a failure recovery part. The address selection part selects a storage region in the memory mat on the basis of three or more addresses issued at the time of an access by the processors. The data output part reads data from the storage region in the memory mat selected by the address selection part. The failure recovery part corrects or masks a failure of predetermined number or less which occurs in the memory mat, the address selection part, and the data output part.

Abstract: A system is applied to control indicator lights for non-volatile memory express solid state disk (NVMe SSD). The system includes a NVMe SSD, a complex programmable logic device (CPLD), a controller and a slave processor. The NVMe SSD has a control module for transmitting a disk position signal. The CPLD is electrically connected to the control module so as to receive the disk position signal. The controller is electrically connected to the CPLD to light up a location indicator light. The slave processor is electrically connected to the control module and a fail indicator light. When the slave processor detect the NVMe SSD is operated under an abnormal condition, a fail signal is transmitted to light up a fail indicator light.

Abstract: A failover manager may be configured to determine a plurality of tenants executable on a server of a plurality of servers, each tenant being a virtual machine executable on the server in communication with at least one corresponding user. The failover manager may include a replicated tenant placement selector configured to dispatch a first replicated tenant for a first tenant of the plurality of tenants to a first standby server of the plurality of servers, and configured to dispatch a second replicated tenant for a second tenant of the plurality of tenants to a second standby server of the plurality of servers. The failover manager also may include a replicated tenant loader configured to activate, based on a failure of the server, the first replicated tenant on the first standby server to replace the first tenant, and the second replicated tenant on the second standby server to replace the second tenant.

Abstract: Techniques are disclosed relating to writing data across multiple storage blocks in a storage device. In one embodiment, physical erase blocks in a bank of a storage device are erasable. Ones of the physical erase blocks may be associated with different respective communication channels. In such an embodiment, a data stripe may be written across a set of physical erase blocks such that the set of physical erase blocks includes physical erase blocks of different banks and includes physical erase blocks associated with different communication channels. In some embodiments, a request to read a portion of the data stripe may be received. In response to the request, a determination may be made that one of the set of physical erase blocks is unavailable to service the request. The request may then be serviced by reassembling data of the unavailable physical erase block.

Abstract: An arrangement for disabling a configuration of a first programmable hardware component, having the first programmable hardware component, a second programmable hardware component, and a switching element. The first programmable hardware component has a configuration interface for configuring a logic of the first programmable hardware component, a data interface for communication of the logic with the second programmable hardware component, a debugging interface for debugging and configuring the logic, and a configuration monitoring interface for signaling a configuration process of the logic. The switching element is designed and connected to the debugging interface such that access to the debugging interface during a configuration process of the logic can be disabled.

Abstract: Systems and methods for facilitating test failover on a remote virtual machine without creating a full copy of the remote virtual machine. A snapshot is created of a remote virtual machine disk, the remote virtual machine disk protecting a source virtual machine disk. An instant, thin provisioned virtual machine is created from the snapshot, and the instant, thin provisioned virtual machine is powered on based on a received instruction to power on the instant, thin provisioned virtual machine thereby creating a running instance of a virtual machine, thereby facilitating test failover on the remote virtual machine without creating a full copy of the remote virtual machine.

Abstract: Embodiments enable recovery of push notification channels via session information associated with user identifiers. A proxy service creates session information describing push notification channels (e.g., subscriptions) for a user and associates the session information with a user identifier. The session information is stored in a cloud service or other storage area separate from the proxy service. After failure of a user computing device or the proxy service, the session information is obtained via the user identifiers and the push notification channels are re-created with the session information. In some embodiments, the proxy service enables delivery of the same notification to multiple computing devices associated with the user identifier.

Abstract: A mirroring device that can improve, even when two storage devices to which an upper limit is set for the number of rewrites of data are used, the fault tolerance of the mirroring device while preventing one of the storage devices from reaching the lifetime thereof early. A mirroring device comprises two storage devices to which an upper limit is set for the number of rewrites of data. Remaining writable amounts of the data in the storage devices are acquired respectively from total amounts of the data written in the respective storage devices. When it is determined that a difference between the respective acquired remaining writable amounts is less than a predetermined value, the respective storage devices are controlled such that the difference becomes equal to or more than the predetermined value.

Abstract: A recycling tool includes a memory, a monitoring engine, a script execution engine, and a status check engine. The memory stores a stop script and a restart script. The monitoring engine receives a request to begin maintenance. The script execution engine executes the stop script to stop processes on middleware servers and databases. The status check engine determines that maintenance has completed. The script execution engine executes the restart script to restart processes on middleware servers and databases.

Abstract: Systems and methods receive manually created event logs that include manually entered data of executed processes, and such systems and methods automatically identify errors in the event logs (based on whether the data violates expected log content). The systems and methods classify the errors, prioritize the event logs into a priority order (based on a previously established error priority ranking), and output the event logs classified into different classifications (and in priority order). The systems and methods receive feedback in order to alter the priority order and the different classifications of the event logs. Further, these systems and methods automatically generate recommendations to correct the errors, using different recommendation processes based on the classifications of the errors. The event logs are output in the different classifications and in the priority order, and the locations of the errors within the event logs are identified by the systems and methods herein.

Abstract: A method begins by a processing module of a dispersed storage network (DSN) determining that a set of storage units of the DSN will be substantially used for read operations of dispersed storage error encoded data. For the set of storage units, the method continues with the processing module determining an actual level of reliability in retrieving a decode threshold number of encoded data slices per read request of a plurality of read requests. The method continues with the processing module comparing the actual reliability to a desired level of reliability in retrieving the decode threshold number of encoded data slices per read request of the plurality of read requests. When the actual reliability exceeds the desired reliability by a reconfiguration threshold, the method continues with the processing module removing one or more storage units from the set of storage units.

Abstract: Concepts and technologies are disclosed herein for end-to-end validation of virtual machines. A control system including a processor can detect a validation request that can include a request to create an end-to-end validation function to perform end-to-end validation of a service. The processor can analyze a policy to determine components of the end-to-end validation function and a virtual machine that will host the end-to-end validation function. The components can include a generator function and a receiver function that can encompass the service. The processor can load, or trigger loading of, an image to the virtual machine and instantiation of the virtual machine. The image can include the end-to-end validation function. The processor also can validate the service using the end-to-end validation function based upon a test scenario stored in a test library of the end-to-end validation function.