One example method to perform object-based load balancing in a distributed storage system of a virtualization system supported by a cluster of host machines may include determining, by a first host machine in the cluster, whether any host machine in the cluster has affinity to a site. The method may also include determining, by the first host machine, whether to distribute affinity Internet small computer system interface (iSCSI) targets owned by the first host machine to at least the second machine based on a first balance objective associated with the site, and after having considered the first balance objective, determining, by the first host machine, whether to distribute iSCSI targets without affinity owned by the first host machine to other host machines in the cluster based on a second balance objective associated with the cluster.

Described are techniques including a computer-implemented method that comprises defining a respective priority classification for each of a plurality of sockets used for communicating between an initiator computational system and a target computational system. The method further comprises automatically assigning a respective priority classification to each of a plurality of Input/Output (IO) requests based on a type of data associated with each IO request. The method further comprises sending the plurality of IO requests to respective sockets of the plurality of sockets with a matching priority classification.

Techniques are provided for a high availability solution (e.g., a network attached storage (NAS) solution) with address preservation during switchover. A first virtual machine is deployed into a first domain and a second virtual machine is deployed into a second domain of a computing environment. The first and second virtual machines are configured as a node pair for providing clients with access to data stored within an aggregate comprising one or more storage structures within shared storage of the computing environment. A load balancer is utilized to manage logical interfaces used by clients to access the virtual machines. During switchover, the load balancer preserves an IP address used to mount and access a data share of the aggregate used by a client.

A method, computer program product, and computer system for copying, at a new node, reservation metadata volumes of an old node. While a software upgrade is in progress, volume reservation command processing may be enabled on both the new node and the old node when copying is complete. Separate logic may be run to process a volume reservation command of the volume reservation command processing. The old node may be switched to a primary mode, wherein the new node may be switched to a secondary mode to synchronize volume reservation metadata with a primary copy. When the software upgrade is complete, the new node may be switched to a single mode to use only a volume reservation database of the new node.

A method is provided for a hyper-converged storage-compute system to implement an active-active failover architecture for providing Internet Small Computer System Interface (iSCSI) target service. The method intelligently selects multiple hosts to become storage nodes that process iSCSI input/output (I/O) for a target. The method further enables iSCSI persistent reservation (PR) to handle iSCSI I/Os from multiple initiators.

A storage controller includes a processing device to send a Non-Volatile Memory Express over Fibre Channel (NVMe/FC) command to a submission queue without routing the NVMe/FC command through a kernel space, the submission queue being reserved for direct access by an initiator device to a user space of the storage controller.

Embodiments for transferring data directly from primary storage to secondary storage in a virtualized network including virtual machine (VM) based storage, by exposing a source volume in the primary storage to a hypervisor host of the virtualized network, preparing a destination volume of the secondary storage as an empty volume and exporting it to the hypervisor host so that the host can the destination volume along with the source volume, and moving, in the hypervisor host, data from the exposed source volume to the exported empty destination volume using a combination of Storage Direct, Storage VMotion, and XCOPY or enhanced XCOPY technologies, wherein the XCOPY technology provides a direct transfer of data from the primary storage to the secondary storage.

A memory system includes: a memory device; and a controller suitable for controlling the memory device and including a buffer memory, wherein the controller performs error history logging into the buffer memory in response to a logging start command from a host, stops the error history logging in response to a logging stop command from the host, and provides the host with the logged error history in response to an output command from the host.

A device connectable between a host computer and a computer peripheral over a standard bus interface is disclosed, used to improve security, and to detect and prevent malware operation. Messages passing between the host computer and the computer peripherals are intercepted and analyzed based on pre-configured criteria, and legitimate messages transparently pass through the device, while suspected messages are blocked. The device communicates with the host computer and the computer peripheral using proprietary or industry standard protocol or bus, which may be based on a point-to-point serial communication such as USB or SATA. The messages may be stored in the device for future analysis, and may be blocked based on current or past analysis of the messages. The device may serve as a VPN client and securely communicate with a VPN server using the host Internet connection.

Techniques are provided for asynchronous reservation of storage volumes in a storage system with persistent storage of reservation data. One method comprises obtaining, by a target storage device, a reservation command from a host device that requests to reserve a storage volume of the target storage device; creating a new execution thread to process the reservation command, wherein an execution of the reservation command is asynchronous; storing an intermediate result of the reservation command in a persistent storage, wherein the stored intermediate result allows the execution of the reservation command to restart from an execution point following the storage of the intermediate result; and initiating a notification to the host device of the reservation of the storage volume in response to a completion of the execution of the reservation command. The target storage device may recover from a failure during a processing of the reservation command by loading a stored intermediate result from the persistent storage.