Abstract: A system and methods for application recovery across storage systems is provided. In some examples, the method includes replicating, from a source storage system to a target storage system, a volume including an application configuration for an application utilizing the volume, wherein the application is executing within a source application host. The method also includes detecting that the application executed in the source application host is unavailable. The method also includes retrieving, from the volume on the target storage system, the application configuration for the application. The method also includes instantiating the application on a target application host using the application configuration retrieved from the volume on the target storage system, wherein the application on the target application host is configured to direct data requests to the volume on the target storage system.

Abstract: A method for use in a distributed storage network including a distributed storage network (DSN) memory, which in turn includes multiple storage units, includes determining storage parameters associated with error-encoded data slices generated from data to be stored in the DSN memory. The storage parameters include information indicating a read-threshold number of error-encoded data slices required to recover the data. The method further includes distributedly storing the error-encoded data slices among the plurality of storage units so that the number of the error-encoded data slices stored in any particular storage unit is chosen so that in the event of a failure of any individual storage unit, at least a read-threshold number of error-encoded data slices are still accessible from the remaining storage units.

Abstract: Dynamically managing control information in a storage device, including: querying, by an array management module executing on a storage array controller, the storage device for a location of control information for the storage device, the control information describing the state of one or more memory blocks in the storage device; and issuing, by the array management module in dependence upon the location of the control information for the storage device, a request to retrieve the control information for the storage device.

Abstract: Methods and apparatus for rebuilding and storing data in a storage network that includes a plurality of storage units. In an embodiment, a processing module(s) of storage network identifies a storage error associated with a data object stored in a first storage unit of a set of storage units. In response, the processing module obtains storage network configuration information associated with the data object, and rebuilds the data object to produce a rebuilt data object. The processing module further identifies, based on the storage network configuration information, a candidate storage unit(s) for storage of the rebuilt data object and determines an available storage capacity level of the candidate storage unit. In response to determining that the available storage capacity level of the candidate storage unit is sufficient to store the rebuilt data object, the processing module facilitates storage of the rebuilt data object in the candidate storage unit.

Abstract: A method of cache management, the method comprising: identifying, among a plurality of storage items, storage items having an access count above a first threshold to generate a set of storage items; identifying, among the set of storage items, storage items having an updated access count above a second threshold to generate a subset of storage items, wherein, for each storage item, the updated access count is dependent upon a number of accesses subsequent to generating the set of storage items; and adding the storage items of the subset of storage items to a cache.

Abstract: Processing data through a storage system in a data pipeline including receiving, by the storage system, a dataset from a collector on a data producer, wherein the dataset is disaggregated from metadata for the dataset by the collector; storing the dataset on the storage system; receiving, by the storage system from a data indexer, a request for data from the dataset, wherein the request for the data comprises the metadata gathered by the collector on the data producer; servicing, by the storage system, the request for the data by locating the data using the metadata gathered by the collector on the data producer and received in the request for the data; and receiving, from the data indexer, indexed data indexed using the metadata gathered by the collector on the data producer.

Abstract: Providing scalable and reliable container-based storage services, including: deploying a containerized storage controller on a first node among of plurality of nodes operable to support execution of the containerized storage controller; associating a dataset stored in backing storage accessible by the first node with one or more virtualized volumes presented by the containerized storage controller; and providing, by the containerized storage controller to one or more client hosts, a set of storage services for the one or more virtualized volumes.

Abstract: Maximizing data throughput in a cloud-based storage system, including: receiving a plurality of write operations directed to a cloud-based storage system; coalescing the plurality of write operations into one or more coalesced write operations, wherein each of the coalesced write operations are configured to effect two or more of the first plurality of write operations; and performing, based on a service tier associated with the cloud-based storage system, the plurality of coalesced write operations on the storage volume.

Abstract: A storage system, blades, removable modules, and method of configuring a storage system are described. The storage system has blades with computing resources and storage resources. At least one of the blades has, or has added, one or more removable modules.

Abstract: Protecting sensitive data in snapshots, including: creating a transformed snapshot portion by applying a transformation specified in an access policy to one or more data objects contained within the portion of the stored snapshot, wherein the stored snapshot is a copy of data in a storage system at a particular point in time prior to a request to access the snapshot; and providing access to the transformed snapshot portion.

Abstract: Accelerating artificial intelligence workflows, including: receiving, from a computing process of an artificial intelligence workflow, a request for information stored on a data repository; issuing, from a user space of an operating system environment, parallel requests to the data repository using a network protocol that operates serially at the kernel level of the operating system environment; receiving, from the data repository, one or more responses to the parallel requests; and providing, to the computing process of the artificial intelligence workflow and based on the one or more responses to the parallel requests, a response to the request for information.

Abstract: Sizing resources for a replication target, including: determining an initial resource requirement for a replication source; determining a retention resource requirement for the replication source; and reporting, in dependence on the initial resource requirement and the retention resource requirement, a total resource requirement for replicating the replication source.

Abstract: A processing system of a storage network operates by: receiving a write request to store a data object; selecting a selected memory type of a plurality of memory types to store the data object, based on object parameters associated with the data object; selecting a selected memory to store the data object, the selected memory having the selected memory type of the plurality of memory types; and facilitating storage of the data object in the selected memory having the selected memory type of the plurality of memory types, wherein the data object is dispersed error encoded and stored as a plurality of encoded data slices.

Abstract: An illustrative method may include creating a volume object based on a request that includes a user token that indicates an identifier of a user associated with the request, the volume object corresponding to a physical or virtual volume of storage; creating an ownership object corresponding to the volume object, the creating comprising obtaining the identifier of the user from the user token and including the identifier in the ownership object; and including in the ownership object an access control list that is associated with an operation type, the access control list comprising identifiers of users and/or user groups who have permission to perform operations on the volume object.

Abstract: A system for cloud-based file services, comprising: a plurality of single-tenant file system nodes configured to provide file system access to an object store via a plurality of multitenant storage nodes; the plurality of multitenant storage nodes sharing access to the object store; and one or more management nodes configured to provision resources for the plurality of single-tenant file system nodes and the plurality of multitenant storage nodes, including modifying resources within the system.

Abstract: A method begins by a computing device of a storage network receiving a data access request of a transaction regarding a data segment, where at least one data segment is dispersed storage error encoded into a set of encoded data slices that are stored in a set of storage units of the storage network. The method continues by executing the data access request. The method continues by generating a set of audit record data files regarding the execution of the data access request, where an audit record data file includes a source identifier, a target identifier, a unique identifier associated with the data segment, a timestamp, and a type code that indicates a type of storage network activity associated with the transaction. The method continues by storing the set of audit record data files in the storage network.

Abstract: A method including, responsive to receiving a request identifying a volume and indicating a command to take a snapshot of the volume, mapping a second logical grouping of data to reference the first logical grouping of data, and remapping the first volume to map to the second logical grouping of data instead of the first logical grouping of data such that the first volume remains addressable with similar access permissions before and after creating the snapshot. The method also includes, in response to receiving a write request targeting the second logical grouping, splitting the second logical grouping into a plurality of ranges including a first range and a second range; wherein the first range of the second logical grouping maps to the first logical grouping, and the write request is performed on the second range of the second logical grouping.

Abstract: Systems, methods, and computer readable storage mediums for blockchain logging of volume-level events in a storage system. Blockchain logging of volume-level event includes receiving, by a storage controller, a storage operation directed to a storage volume; detecting, by the storage controller, that the storage operation is a volume-level event associated that affects the volume as a whole; and updating a blockchain ledger to include information describing the volume-level event, wherein the information comprises data describing a host associated with the event.

Abstract: Continuous value data redundancy, including: receiving, by a storage system, a dataset; determining, based on a data resiliency metric, an integer redundancy value for the dataset from among a plurality of redundancy values; and generating, based on the integer redundancy value for the dataset, data recovery information for the dataset, wherein the integer redundancy value for the dataset is different from at least one other integer redundancy value for another dataset stored within the storage system.

Abstract: A command to relocate data is transmitted by a storage controller. The command includes first address information associated with a first set of blocks storing the data at one or more storage devices using a first programming mode and second address information associated with a second set of blocks at the one or more storage devices to store the relocated data using a second programming mode. The command causes the relocation of the data from the first set of blocks to the second set of blocks while bypassing sending the data to the storage controller. An acknowledgement is received that the relocated data has been stored at the second number of blocks.