Habanero Holdings, Inc.

Symantec Corporation

Sanmina Corporation

Hitachi Data Systems Engineering UK Limited

Hitachi, Ltd.

Oracle International Corporation

Saratoga Speed, Inc.

Christopher Youngworth

Nakul Pratap Saraiya

Harinder Singh Bhasin

Jia-Jen Yeh

Sriram Chidambaram

Akram A Abou-Emara

Oleg Kiselev

Gaurab Paul

Abbas Morshed

Chuan-Wen George Tsang

Shreyas P Gandhi

A method of storing a file in a storage system that includes a plurality of memory-storage hosts includes: specifying a unique chunk identifier for a memory chunk included in the file; specifying a hash mapping to identify one or more storage locations for the chunk identifier, each storage location corresponding to a portion of a memory-storage host; providing metadata corresponding to the hash mapping to the memory-storage hosts; and storing the memory chuck at the one or more storage locations identified by the hash mapping by providing the chunk identifier to one or more memory-storage hosts corresponding to the identified one or more storage locations, the one or more memory-storage hosts implementing the hash mapping to store the memory chunk at the identified one or more locations.

Network system to distribute chunks across multiple physical nodes with disk support for object storage

A system comprises a first host device, a second host device, and first and second cache controllers. A cache controller includes a cache memory interface, a first peripheral interface that communicates with the first host device, a second peripheral interface that communicates with the second host device, logic circuitry that loads a cache command from a cache command memory of the first host device, loads a cache command from a cache command memory of the second cache controller, and performs the cache commands, and error checking circuitry that detects an uncorrectable error in a first cache controller/memory pair and indicates the uncorrectable error condition to at least one of the first and second host devices. At least one of the first host device or the second host device writes contents of the cache memory of the second cache controller/memory pair to a main memory in response to the indication.

System and method for cache data recovery

A cluster system includes a plurality of computing nodes connected to a network, each node including one or more storage devices. The cluster system stores data and at least one of data replicas or erasure-coded segments across the plurality of nodes based on a redundancy policy. Further, configuration information, which may be indicative of a data placement of the data and the data replicas or erasure-coded segments on the plurality of nodes, is provided to each of the plurality of nodes. Additionally, each of the nodes may act as a first node which is configured to determine, upon a change of the redundancy policy, updated configuration information based on the change of the redundancy policy and to send a message including information indicating the change of the redundancy policy to the other nodes of the plurality of nodes.

Data redundancy in a cluster system

A system comprises a host device and a cache controller. The host device includes a command buffer and a host application that posts a cache command that includes a cache key and a key aging alias in the command buffer. The cache controller includes logic circuitry configured to load the cache command from the command buffer of the first host device into the buffer memory, identify a match, if any, for the cache key in the command queue, perform the cache command, and return cache completion status information to the first host application, wherein the cache completion status information includes a value of the key aging alias in cache metadata when a match for the cache key is found and includes a value of the key aging alias provided by the first host application when a match for the cache key is not found.

System and method for cache entry aging

A cluster system includes a plurality of computing nodes connected to a network. Each node is configured to access its own storage device, and to send and receive input/output (I/O) operations associated with its own storage device. Further, each node of the plurality of nodes may be configured to have a function of acting as a first node, which sends a first message to other nodes of the plurality of nodes. The first message may include configuration information indicative of a data placement of data on the plurality of nodes in the cluster system according to an event. Following receipt of the first message from the first node, each of the other nodes may be configured to determine, based at least in part on the configuration information, whether data stored on its own storage device is affected by the event.

Data configuration and migration in a cluster system

A storage system includes a plurality of nodes connected to a network. Each node is capable of performing its own recovery of partially written data and maintaining consistency of the data stored on the storage system. The nodes may independently calculate the location of the data across the nodes and independently balance the data, maintain consistency based on a redundancy policy of the storage system, and migrate data according to a location change. If a node determines that the stored data thereon is incomplete or damaged, the node may reconstruct its respective data from replica data on other nodes. During migration of data between the nodes, I/O processing from a host is not interrupted in some examples.

Independent data integrity and redundancy recovery in a storage system

Embodiments of the present invention are directed to a method and system for virtual device communication filtering. The method includes receiving, within an electronic system, an instantiation request for a first virtual device and determining whether the first virtual device and a second virtual device are allowed to communicate based on an authorization record datastore. The method further includes modifying an authorization record of the authorization record datastore. The modifying comprises setting an indicator of a data filtering module to filter communication between the first virtual device and the second virtual device. A response can then be sent to the instantiation request.

System and method for virtual device communication filtering

A plurality of SMP modules and an IOP module communicate storage traffic via respective corresponding I/O controllers coupled to respective physical ports of a switch fabric by addressing cells to physical port addresses corresponding to the physical ports. One of the SMPs executes initiator software to partially manage the storage traffic and the IOP executes target software to partially manage the storage traffic. Storage controllers are coupled to the IOP, enabling communication with storage devices, such as disk drives, tape drives, and/or networks of same. Respective network identification registers are included in each of the I/O controller corresponding to the SMP executing the initiator software and the I/O controller corresponding to the IOP. Transport of the storage traffic in accordance with a particular VLAN is enabled by writing a same particular value into each of the network identification registers.

Storage traffic communication via a switch fabric in accordance with a VLAN

Embodiments of the present invention are directed to a method and system for authorization management and resource attachment. The method includes receiving, within an electronic system, a notification of an emulated device operable to be provisioned and updating an authorization record of an authorization record datastore. The updating of the authorization record comprises updating routing information related to communication of the emulated device and a virtual device. The method further includes receiving a request for initial instantiation or reconnection of the emulated device with the virtual device and determining whether the emulated device and the virtual device are allowed to communicate based on the authorization record datastore. A response to the request for instantiation or reconnection can then be sent.

System and method for authorization and management of connections and attachment of resources

A volume manager I/O method and system. The method includes determining a storage extent mapping of storage functionality of a plurality of storage devices and generating a logical disk extent based on the storage extent mapping. The logical disk extent is exported to a volume device component that is communicatively coupled to implement I/O for an application. An I/O request from the application is received via the volume device component. The I/O request is executed in accordance with the logical disk extent.

Distributed storage through a volume device architecture

In one aspect, initial storage system control information is received, and in response a configuration of a storage interface is determined in accordance with the initial storage system control information. Then final storage system control information is accessed via the storage interface and the storage interface is reconfigured in accordance with the final storage system control information. In another aspect, one of a plurality of physical partitions of a physically partitionable symmetric multiprocessor executes a storage control process to control storage traffic, and another one of the physical partitions executes a program to process the storage traffic. The physical partitions are enabled to communicate the storage traffic at least in part via respective input/output controllers coupled to a switch fabric. The partitionable symmetric multiprocessor has programmatically configurable links for selectively isolating shared memory coherency and cache memory coherency transactions between at least some included processors.

Storage gateway configuring and traffic processing

Storage gateway provisioning, configuration, and management functions provide mechanisms to specify and manage parameters and operations associated with storage gateways. The parameters may include any combination of VLAN topology, zoning behavior, LUN masking, bandwidth, and priority. The parameters may also include path information describing initiator to target associations, enabling load-balancing aggregations and multipathing redundancy. Parameters may be specified at relatively low-levels, describing specific HW elements, or may be specified at relatively high-levels, describing desired bandwidth and redundancy requirements, with SW determining low-level HW assignments. Configuration and management functions enable dynamic modification of storage gateway parameters (such as bandwidth between selected initiator and target pairs). Management functions also enable dynamic switchover from a primary path to a secondary path with respect to a storage device.

Storage gateway provisioning and configuring

Storage gateway remote and local access to storage devices is provided in part via an initiator implementing bandwidth-controlled access to the devices. The initiator may be iSCSI-compatible, and may also optionally implement protection, security, and performance features. The protection and security features include any combination of VLANs, zoning, Logical Unit Number (LUN) masking, and encryption. The performance features include any combination of HW-accelerated Remote Direct Memory Access (RDMA), prioritized I/O operations, and service priority (such as strict priority and straight or weighted round-robin priorities). An initiator may be implemented in a Processor Memory Module (PMM) coupled to a switch fabric that is in turn coupled to a target implemented in a Fibre Channel Module (FCM). Storage traffic may be communicated as Small Computer System Interface (SCSI)- and SCSI over Transmission Control Protocol/Internet Protocol (iSCSI)-compatible information (data and commands) on the switch fabric via cellifying input/output interface devices.

Storage gateway initiator for fabric-backplane enterprise servers

Storage gateway remote and local access to storage devices is provided in part via a target implementing bandwidth-controlled access to the devices. The target may be iSCSI-compatible, and may also optionally implement protection, security, and performance features. The protection and security features include any combination of VLANs, zoning, Logical Unit Number (LUN) masking, and encryption. The performance features include any combination of HW-accelerated Remote Direct Memory Access (RDMA), prioritized I/O operations, and service priority (such as strict priority and straight or weighted round-robin priorities). An initiator may be implemented in a Processor Memory Module (PMM) coupled to a switch fabric that is in turn coupled to a target implemented in a Fibre Channel Module (FCM). Storage traffic may be communicated as Small Computer System Interface (SCSI)- and SCSI over Transmission Control Protocol/Internet Protocol (iSCSI)-compatible information (data and commands) on the switch fabric via cellifying input/output interface devices.

Growing community of inventors

San Jose, CA, United States of America

Christopher Youngworth