Abstract: According to examples, an apparatus may include a memory on which is stored machine-readable instructions that may cause a processor to determine, for each of a plurality of members in a group, a respective least privilege level for a resource and determine, based on the determined respective least privilege levels, a privilege level to be assigned to the group for the resource. The instructions may also cause the processor to assign the determined privilege level to the group for the resource and apply the assigned privilege level to the members of the group for the resource.

Abstract: An example method of managing memory in a computer system implementing non-uniform memory access (NUMA) by a plurality of sockets each having a processor component and a memory component is described. The method includes replicating page tables for an application executing on a first socket of the plurality of sockets across each of the plurality of sockets; associating metadata for pages of the memory storing the replicated page tables in each of the plurality of sockets; and updating the replicated page tables using the metadata to locate the pages of the memory that store the replicated page tables.

Abstract: A method of identifying errors or manipulations of data or software, includes receiving a first hash value stored in a first block of the memory, receiving a second hash value from a reference memory, and comparing the hash values. If different, error correction information and the content of the first block is received. The content of the first block is reconstructed by in accordance with the error correction information, generating a hash value and comparing the hash value of the modified content with the received first hash value, until the modified content and the received hash values are identical. The content of the first block received from the reference memory and the content of the reconstructed first block stored in the memory of the device are compared for identifying the differences in the content.

Abstract: In one embodiment, a processor comprises: at least one core formed on a die to execute instructions; a first memory controller to interface with an in-package memory; a second memory controller to interface with a platform memory to couple to the processor; and the in-package memory located within a package of the processor, where the in-package memory is to be identified as a more distant memory with respect to the at least one core than the platform memory. Other embodiments are described and claimed.

Abstract: Disclosed are devices and methods for protecting the register file of a power management integrated circuit (PMIC). In one embodiment, a device is disclosed comprising: a register file comprising a plurality of a registers, at least one register in the register file containing a write register bit (WRB); and an interface configured to receive messages from a host application, the messages including a WRB enablement signal, wherein the device is configured to enable writing to the register file in response to receiving the WRB enablement signal over the interface, write data in response to write messages while writing to the register file is enabled, and disable writing to the register file in response to receiving a stop bit over the interface.

Abstract: A method of managing a storage appliance is provided. The method includes (a) partitioning a cache of the storage appliance at least into multiple regions dedicated to respective storage drives of a plurality of storage drives of the storage appliance; (b) in response to the storage appliance receiving a first storage command directed to a first storage drive, allocating space for fulfillment of the first storage command within the region of cache dedicated to the first storage drive; (c) in response to the storage appliance receiving a second storage command directed to a second storage drive, allocating space for fulfillment of the second storage command within the region of cache dedicated to the second storage drive; and (d) fulfilling, by the storage appliance, the first and second storage commands by moving data to and from their respective allocated space in the cache. An apparatus, system, and computer program product for performing a similar method are also provided.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for backup, restoration, and migration of computer systems. In some implementations, data from a first server environment is obtained. A data package is generated that includes configuration data, data objects, and/or metadata from the first server environment organized in a predetermined arrangement. Data indicating (i) a destination on which to deploy the archived data from the first server environment and (ii) one or more characteristics of the destination is received. Mapping data that specifies a mapping of elements in the predetermined arrangement to elements of server environments having the one or more characteristics is accessed. Server environment data derived from the data package is deployed, the server environment data being deployed to the destination and arranged at the destination in a manner specified by the mapping data.

Abstract: Techniques manage a Redundant Array of Independent Disks (RAID). In such a technique, in response to receiving information indicative of an end-of-life (EOF) of a first storage device of the RAID, a storage extent associated with the first storage device is determined, the storage extent being distributed over a plurality of storage devices of the RAID and including a first group of slices in the first storage device, the storage extent including a plurality of data blocks stored thereon. A portion of a data block of the plurality of data blocks is read from a first slice of the first group of slices, the first slice comprising the portion of the data block. The portion of the data block is written into a spare slice.

Abstract: Embodiments include methods, systems, devices, instructions, and media for limiting hot-cold swap wear leveling in memory devices. In one embodiment, wear metric values are stored and monitored using multiple wear leveling criteria. The multiple wear leveling criteria include a hot-cold swap wear leveling criteria, which may make use of a write count offset value. Based on a first wear metric value of a first management group and a second wear metric value of a second management group, the first management group and the second management group are selected for a wear leveling swap operation. The wear leveling swap operation is performed with a whole management group read operation of the first management group to read a set of data, and a whole management group write operation to write the set of data to the second management group.

Abstract: Example embodiments are described for data property-based data placement inside a nonvolatile memory device performed by a storage controller of the nonvolatile memory device.

Abstract: Methods, non-transitory machine readable media, and computing devices that accelerate storage operations are disclosed. With this technology, computational storage devices are assigned by a NIC processor of a computational network interface controller (NIC) to storage locations corresponding to respective partitions of an n-dimensional space. One of the storage locations to which a data location in the n-dimensional space maps is then identified by the NIC processor. The data location is determined based on a hash for data associated with a received storage operation. The NIC processor subsequently communicates via a system bus with a storage processor of one of the computational storage device to service the storage operation. The storage processor is coupled directly to flash media of the one of the computational storage device that is assigned to the one of the storage locations and maintains a key/value store comprising the data.

Abstract: Devices and techniques are disclosed herein for providing an improved Replay Protected Memory Block (RPMB) data frame and command queue for communication between a host device and a memory device.

Abstract: A data mover selection system includes a fabric manager system coupled to computing devices that are coupled to a memory system. The fabric manager system receives respective local data mover selection information from the computing devices that identifies data mover device(s) accessible to those computing device, and generates global data mover selection information that includes each data mover device accessible to the computing devices. When the fabric manager system receives a first data transfer request to transfer data between first and second memory locations in the memory system, it uses the global data mover selection information to identify a data mover device having the highest priority for performing data transfers between the first and second memory locations in the memory system, and transmits a first data transfer instruction to that data mover device to cause that data mover device to perform the first data transfer operation.

Abstract: A method for caching and deduplicating a plurality of received segments of data is disclosed. The method comprises identifying a value of a first data field in each segment acting as a unique source identifier; and identifying a value of a second data field in each segment, the second data field being densely populated by values in the plurality of segments. The value of the second data field is partitioned into a first partition comprising more significant bits and a second partition comprising less significant bits. A key is generated based on values of the first data field and the first partition. A database entry associates the first key with a bitmap, the bitmap having a length based on the number of possible values a bitmap of equal length to the second partition could validly take. Single bits of the bitmap are set corresponding to received segments, to enable deduplication.

Abstract: A system, method, and machine-readable storage medium for restoring a data object for a specified active time period are provided. In some embodiments, the method includes receiving, by a storage device from a client, a request specifying an active time period for a data object to remain stored on an accessible tier. The method also includes determining, by the storage device, that the active time period has elapsed. The method further includes responsive to a determination that the active time period has elapsed, sending, by the storage device, a request to a server storing the data object to move the data object from the accessible tier to an archive tier. Data objects that are stored on the accessible tier are accessible by the client, and data objects that are stored on the archive tier are inaccessible by the client.

Abstract: A technique for restoring content is described. The technique includes receiving a specification of content to be restored to a target storage from a data source. The technique also includes determining task units to be performed to restore the specified content. Each task unit is associated with a corresponding assigned weight value. Based on the corresponding assigned weight values, the task units are distributed to different task groups. The task groups are processed in parallel with each other to concurrently perform at least a portion of the distributed task units.

Abstract: A thin device (TDev) is tagged to identify the TDev as being used to access snapshot data on the storage system. If a snapshot is to be shipped to a cloud repository, the tagged TDev is linked to the snapshot, and mounted to a cloud tethering subsystem. When the tagged TDev is linked to the cloud tethering subsystem, the snapshot subsystem reads the thin device tag and, if the thin device is tagged, selectively does not execute a define process on the tagged thin device. By not executing the define process, the tracks of the thin device do not contain metadata identifying the location of the snapshot data on the storage system. Writes to source do not require a private copy of the old data for the snapshot, even if the snapshot is created in a different storage resource pool than the source data volume.

Abstract: According to one embodiment, a memory system includes a nonvolatile memory and a controller. The controller selects, as a write mode, at least one of a first mode in which N-bit data is written per memory cell in the nonvolatile memory and a second mode in which M-bit data is written per memory cell in the nonvolatile memory as a write mode. N is equal to or larger than one. M is larger than N. The controller selects the second mode when a reception speed of data, which is received in accordance with acceptance of one or more write commands from the host, is equal to or slower than a threshold, and selects the first mode when the reception speed is faster than the threshold.

Abstract: A single application may rely on data storage provided by a plurality of virtual data storage volumes mounted on one or more compute nodes. A crash-consistent snapshot of the state of the application may be generated. Each of the virtual data storage volumes may be quiesced prior to the capture of a plurality of volume-level snapshots, after which each volume is unquiesced. The crash-consistent snapshot may be used to restore the application to the state at the time the snapshot was captured.

Abstract: An approach is disclosed for placing data on volumes. Accesses to data entries at a source location are analyzed to determine locations of the data entries in one or more files. Types of data are identified at the one or more data entries. Types of accesses are identified for the data entries. Durations of the types of accesses to the data entries are identified. An access value is calculated by mapping the one or more types of data combined with the one or more types of accesses combined with the one or more durations of the types of accesses. Confidential sensitive data is moved according to the calculated access value, where a highly accessed confidential data is separated from lighted accessed confidential data by moving a selected portion of data from the source location to the destination location.