Abstract: Examples of systems described herein include a virtualized file servers. Examples of virtualized file servers described herein may support disaster recovery of the virtualized file server. Accordingly, examples of virtualized file servers may support metadata fixing procedures to update metadata in a recovery setting. Examples of virtualized file servers may support hypervisor-agnostic disaster recovery.

Abstract: In some aspects, a non-transitory computer-readable storage medium having computer-executable instructions stored thereon that, upon execution by a processor, causes the processor to receive an indicator of a functionality; map the indicator to a first service and a second service dependent on the first service; identify a policy based on the first service and the second service; and determine, based on the policy, locations of deployment for the first service and the second service.

Abstract: Various embodiments disclosed herein are related to an apparatus. In some embodiments, the apparatus includes a processor and a memory. In some embodiments, the memory includes programmed instructions that, when executed by the processor, cause the apparatus to receive an indication that an entity state of an entity has been updated, and, in response to receiving the indication that the entity has been updated, determine that the number of updates of the entity within a time period exceeds a threshold. In some embodiments, the memory includes the programmed instructions that, when executed by the processor, cause the apparatus to determine that the time period has expired, and, in response to determining that the time period has expired, collect the entity state of the entity.

Abstract: Methods, systems and computer program products for implementing high-availability file services in a clustered computing environment. Two or more clusters are interconnected to carry out operations for replication of file content between file servers. The file servers and their respective network links are registered with a file server witness. The file servers operate in synchrony, where each file I/O is replicated from one file server to another file server over a first set of network paths. A file server witness communicates with each file server using a second set of two or more network paths interfaced with respective file servers. The file server witness monitors the file servers to determine operational health of the file servers. Upon receipt of a file I/O request, the file I/O request is directed to one of the two file servers based at least in part on the determined operational health.

Abstract: Methods, systems and computer program products for computer system data management. A leader node that is in a leader-follower relationship with a follower node is deployed to manage metadata across a plurality of interconnected computing nodes of the computer system. Upon a failure of any sort that results in a loss of operation or a disconnection of the leader node, the followers undertake steps to bring up a new leader. Such steps to bring up a new leader include electing a new leader to replace the lost or disconnected leader and initializing the data state of the new leader node by causing the leader to request incremental snapshots from followers. Additional metadata that might have changed since closing the incremental snapshots can also be retrieved from the followers. The metadata that might have changed since the time of closing the incremental snapshot is subjected to verification using a consensus algorithm.

Abstract: A system and method include migrating, by a migration controller, a first entity of a first subset of entities from a source site to a target site in a virtual computing system based on an asynchronous mode of replication. The system and method also include replicating, by the migration controller, data of a second entity of a second subset of entities from the source site to the target site based on a synchronous mode of replication in parallel with the migration of the first entity for dynamically adjusting a recovery time objective parameter.

Abstract: Various embodiments disclosed herein are related to an apparatus. In some embodiments, the apparatus includes a processor and a memory. In some embodiments, the memory includes programmed instructions that, when executed by the processor, cause the apparatus to receive an indication that an entity state of an entity has been updated, and, in response to receiving the indication that the entity has been updated, determine that the number of updates of the entity within a time period exceeds a threshold. In some embodiments, the memory includes the programmed instructions that, when executed by the processor, cause the apparatus to determine that the time period has expired, and, in response to determining that the time period has expired, collect the entity state of the entity.

Abstract: In one embodiment, a system for managing a virtualization environment includes host machines implementing a virtualization environment, a plurality of clusters of the host machines, a virtualized file server (VFS) comprising a plurality of file server virtual machines (FSVMs), and a VFS cluster manager (CM) configured to distribute storage items among the clusters and receive cluster storage statistics for one or more shares of the VFS. The CM is further configured to, in response to a request from a first FSVM to identify a storage location for a storage item, identify a cluster at which the storage item is to be located based on the cluster storage statistics, identify a second FSVM at which the storage item is to be located based on compute usage statistics of one or more FSVMs in the identified cluster, and send an address of the second FSVM to the first FSVM.

Abstract: A scalable Internet of Things (IoT) system may include multiple instances of an IoT manager, each instance respectively configured to connect to a respective edge system of multiple edge systems. The IoT system may further include a containerized system configured to allow any instance of the IoT manager to deploy data pipelines to any edge system of the multiple edge systems in delta communications. Any instance of the IoT manager may send a change message to any edge system via a publish/subscribe notification method. In some examples, a centralized IoT manager may form a secure communication with an edge system, synchronize an object model with an edge object model for the edge system, and maintain the edge system using delta change communications. The IoT system may facilitate any instance of the IoT manager to subscribe a communication channel with an associated edge system for receiving update notification.

Abstract: The disclosed systems emulate high-frequency application-consistent snapshots by forming restore point data sets based on remote site replay of I/O commands. A method embodiment commences upon identifying a primary computing site and a secondary computing site, then identifying an application to be restored from the secondary computing site after a disaster. Prior to the disaster, a group of computing entities of the application to be restored from the secondary computing site are identified. Input/output operations that are performed over any of the computing entities at the primary site are streamed to the secondary site where they are stored. An I/O map that associates a time with an indication of a last received I/O command that had been performed over a changing set of computing entities is sent to the secondary site. An agent at the secondary site accesses the I/O map and the streamed-over I/Os to construct recovery data.

Abstract: In one embodiment, a system for managing a virtualization environment comprises a plurality of host machines, one or more virtual disks comprising a plurality of storage devices, a virtualized file server (VFS) comprising a plurality of file server virtual machines (FSVMs), wherein each of the FSVMs is running on one of the host machines and conducts I/O transactions with the one or more virtual disks, and a virtualized file server self-healing system configured to identify one or more corrupt units of stored data at one or more levels of a storage hierarchy associated with the storage devices, wherein the levels comprise one or more of file level, filesystem level, and storage level, and when data corruption is detected, cause each FSVM on which at least a portion of the unit of stored data is located to recover the unit of stored data.

Abstract: Various embodiments set forth techniques for managing and/or accessing metadata associated with a vblock, systems implementing said techniques, and computer-readable media storing instructions for performing said techniques. In some embodiments, one or more computer-readable media store instructions that, when executed by one or more processors, cause the one or more processors to perform steps including receiving a request for metadata associated with a vblock; accessing a merged metadata record associated with the vblock, where the merged metadata record comprises metadata corresponding to metadata in metadata records for all but a last snapshot or a live vblock having a metadata record, and a first identifier of the last snapshot or the live vblock having a metadata record; and returning the requested metadata based on the metadata in the merged metadata record and metadata in the metadata record identified by the first identifier.

Abstract: Methods, systems, and computer program products for moving a container-based application from a source HCI cluster to a target HCI cluster. An HCI storage cluster data replication mechanism operates to copy data and metadata from a plurality of storage devices that constitute a storage pool of the source HCI cluster. A container-based application replication mechanism operates to copy data and metadata from an executable container that is running on a node of the source HCI cluster. Periodically (1) the state of the container-based application is saved using the container-based application replication mechanism, and (2) the state of the storage cluster data of the HCI storage cluster is saved using the HCI storage cluster data replication mechanism. The saved state of the container-based application including its application data and metadata are combined with the saved state of the storage cluster data to bring-up the container-based application at the target HCI cluster.

Abstract: Techniques for performing compression operations on persistently-stored data blocks during read/write commands. A method embodiment performs in-line data compression operations over data blocks referenced by a caller. The in-line data compression operations are performed during execution of a storage input-output (I/O) command, between the event of receipt of the storage I/O command and the event of returning status of the storage I/O command. The storage I/O operation is associated with at least one data group comprising one or more data blocks that are identified by the caller. Upon receipt of the storage I/O command, one or more compression rules are applied to the data blocks to determine one or more compression parameters, which compression parameters are used to form specific compression operations that are performed over at least a portion of the data group. The status pertaining to the execution of the storage I/O operation is returned to the caller.

Abstract: A plurality of different virtualization system images are configured for deployment to a plurality of nodes in heterogeneous environments. Individual ones of the virtualization system images are configured such that once deployed, the nodes form a computer cluster having a storage pool that is shared across the nodes. When configuring the virtualization system images, information that describes the heterogeneous computing environments is accessed, and constraints pertaining the heterogeneous computing environments are reconciled in advance of configuring the different virtualization system images. A common subnet across the heterogeneous environments is established. The plurality of different virtualization system images are configured to access the common subnet once deployed. The common subnet serves as a storage I/O communication path over which a cluster-wide storage pool is implemented.

Abstract: Systems for high-performance distributed computing. The systems include techniques for managing data and metadata across multiple nodes. A method embodiment commences by storing data at a node using a first storage mechanism that is local to the node. A first set of metadata is configured to identify a storage location for the stored data. The first set of metadata is stored using the same first storage mechanism that is local to the node. For accessing the first set of metadata, a second set of metadata is configured to identify a storage location for the first set of metadata. The second set of metadata is stored using a second storage mechanism that comprises a distributed metadata storage facility that stores metadata across multiple storage locations having at least one of the multiple storage locations that is not local to the node that stores data and metadata using the first storage mechanism.

Abstract: Various embodiments disclosed herein are related to a non-transitory computer readable storage medium. In some embodiments, the medium includes instructions stored thereon that, when executed by a processor, cause the processor to receive, at a node of a cluster on an edge network, an indication that the cluster received a configuration update, compare a first parameter of a configuration state of the node to a second parameter of the configuration update, determine if the first parameter matches the second parameter, in response to determining that the first parameter matches the second parameter, apply the configuration update, and collect data in accordance with the configuration update.

Abstract: One or more non-transitory computer-readable media can store program instructions that, when executed by one or more processors, cause the one or more processors to perform steps of organizing storage as a set of storage regions, each storage region having a fixed size; and for each storage region, storing a storage allocation structure of the storage region formatted in a first format selected from a format set including at least two formats, determining a change of an allocation feature of the storage region, based on the allocation feature of the storage region, selecting, from the format set, a second format of the storage allocation structure, and reformatting the storage allocation structure in the second format.

Abstract: Applications or Agents or Administrators can communicate with services and/or applications at hosted and/or remote locations via proxy service or application endpoints. Proxy Services described here may, in examples, manage the life cycle of communication channels, or tunnels to ensure guaranteed access to hosted services and applications regardless of their location. Examples of proxy services may create one or more tunnels, each in accordance with a particular tunneling protocol. The tunneling protocol used may be selected in accordance with a request, including information parameters—in this manner, proxy services described herein may be quite flexible in supporting tunneling connections to multiple and variable types of services and tunneling protocols.

Abstract: Various embodiments disclosed herein are related to a non-transitory computer readable storage medium. In some embodiments, the medium includes instructions stored thereon that, when executed by a processor, cause the processor to determine, in a cluster of host machines, a priority level of telemetry data collected in the cluster, at least based on a data type of the telemetry data and a tag and store the telemetry data in a storage in the cluster. In some embodiments, a quality-of-service (QoS) is associated with the priority level. In some embodiments, the storage is associated with the priority level. In some embodiments, the medium includes the instructions stored thereon that, when executed by the processor, cause the processor to send the telemetry data from the storage to a server in accordance with the QoS, wherein the server is separate from the cluster.