A method for resynchronizing data repositories in a high availability storage environment includes maintaining, in a first gateway server, a first journal that records operations that are performed for a first set of objects. The method further maintains, in a second gateway server, a second journal that records operations that are performed for a second set of objects. The method communicates, from the first gateway server to the second gateway server, any operations that are performed by the first gateway server for objects in the second set, so that these operations may be recorded in the second journal. The method further communicates, from the second gateway server to the first gateway server, any operations that are performed by the second gateway server for objects in the first set, so that these operations may be recorded in the first journal. A corresponding system and computer program product are also disclosed.

A method for accessing a memory module includes; encoding first data of a first partial burst length to generate first parities and first cyclic redundancy codes, encoding second data of a second partial burst length to generate second parities and second cyclic redundancy codes, writing the first data and the second data to first memory devices, and writing the first parities, the first cyclic redundancy codes, the second parities, and the second cyclic redundancy codes to a second memory device and a third memory device.

A basic logic element (1) includes: a calculation unit (11) configured to perform calculation processing; a self-diagnosis unit (12) configured to self-diagnose whether or not there is an abnormality in a result of the calculation output from the basic logic element; a management unit (13) configured to determine whether or not to retain authority to output the result of the calculation based on a result of the diagnosis performed by the self-diagnosis unit (12) and output a result of the determination as an authority signal; and an output control unit (14) configured to control whether or not to output the result of the calculation performed by the calculation unit (11) based on whether or not the authority to output data is retained by the management unit (13).

A storage system has priority queues for real time-class file system messaging and backup-class file system messaging. The storage system includes servers, coupled as a storage cluster, storage devices and a network coupling the servers and the storage devices. The servers have priority queues. The servers operate the priority queues for messaging from the servers to the storage devices via the network in accordance with a real time-class file system and a backup-class file system. A first subset of the priority queues has higher priority on the network for real time-class file system messaging of at least one type. A second subset of the priority queues has lower priority on the network for backup-class file system messaging of at least one type.

A memory device includes a memory die, a non-volatile memory circuit, and a logic die. The memory die includes a firs memory space and a second memory space. The non-volatile memory circuit stores a repair table file corresponding to the first memory space. The logic die is coupled to the memory die and the non-volatile memory. The logic die selectively accesses the first memory space or the second memory space of the memory die according a comparing result of an input address and the repair table file. The memory die and is different from the logic die.

A data storage device includes a memory device and a controller. The memory device includes a plurality of planes, wherein each of the planes includes two or more memory blocks. The controller is configured to control an operation of the memory device. The controller is further configured to generate a first super block as a super block including two or more way-interleavable memory blocks among the plurality of memory blocks of the plurality of planes, determine whether each of the memory blocks included in the first super block is a bad block, retrieve a spare block for replacing a first memory block determined as a bad block, in the plurality of planes; and generate a second replacing super block as a super block in which the first memory block is replaced with a second memory block positioned in a plane which does not have the first memory block, when all spare blocks of a plane including the first memory block are used.

A communication node (NODE) for connecting a fault-tolerant computer (FTC) to a real-time network (NET), wherein the node receives critical application data (HCAD1, HCAD2) from computation hosts (HOST) of the fault-tolerant computer, and the node is configured to forward the critical application data as node critical application data (NCAD) to the NET. The node includes at least a first end system (ES1), a second end system (ES2) and a switch (SW), and the switch includes at least a commander part (COM), a monitor part (MON) and a comperator part (COMP). The MON and the COMP may be integrated into an integrated part (MONC). The ES1 connects to the computation hosts or a subset thereof, and the ES2 connects to the computation hosts or a subset thereof. The ES1 connects to the COM, and the ES2 connects to the MON. The computation hosts or a subset thereof provide first host critical application data (HCAD1) to the ES1, and the computation hosts or a subset thereof provide second host critical application data (HCAD2) to the ES2. The ES1 is configured to forward the HCAD1 as first end system critical application data (ESCAD1) to the COM and the ES2 is configured to forward the HCAD2 as second end system critical application data (ESCAD2) to the MON. The COM is configured to forward the ESCAD1 as commander critical application data (CCAD) to the COMP at a pre-configured commander forwarding point in time (TCOM), and the MON is configured to forward the ESCAD2 as monitor critical application data (MCAD) to the COMP at a pre-configured monitor forwarding point in time (TMON). If the MON and the COMP are not integrated into an integrated part, then the COMP is configured to forward either the CCAD or the MCAD as node critical application data (NCAD), if and only if, the CCAD and the MCAD are identical and the COMP starts to receive the CCAD and the MCAD within an interval of configured length (SYNC-1). Alternatively, if the MON and the COMP are integrated into an integrated part (MONC), then the COM is configured to forward the ESCAD1 as NCAD to the NET. The switch includes an interception function (INTERCEPT) which is configured to (i) preempt an ongoing transmission of NCAD and/or (ii) prevent the transmission of NCAD, and the COMP is configured to activate the interception function if and only if the CCAD and the MCAD are not identical or the COMP does not start to receive the CCAD and the MCAD within SYNC-1.

Different embodiments of local redundancy decoder circuits that can be used in a memory device are disclosed. The different types of local redundancy decoder circuits are operably connected to the columns of memory cells in a memory array.

An apparatus comprises at least one processing device comprising a processor coupled to a memory; the at least one processing device being configured to: obtain a set of rebuild rate parameters for a given storage device from a storage array comprising a plurality of storage devices; and dynamically regulate a rebuild rate associated with a rebuild process for the given storage device based on the set of rebuild rate parameters obtained from the storage array for the given storage device. For example, the set of rebuild rate parameters include a rebuild capacity parameter and a rebuild time parameter.

A data center for data backup and replication, including a pool of multiple storage units for storing a journal of I/O write commands issued at respective times, wherein the journal spans a history window of a pre-specified time length, and a journal manager for dynamically allocating more storage units for storing the journal as the journal size increases, and for dynamically releasing storage units as the journal size decreases.