Emc IP Holding Company LLC

Oracle International Corporation

Colin Yong Zou

Man Lv

Rahul Ugale

Chris Zirui Liu

Ried Ruifang Liu

Kun Wang

Zhengli Yi

Sean Cheng Ye

Youbing Li

Alan Zhongjie Wu

Wei Lin

Wei Jun Zheng

Fei Wang

Xinghai Yu

Oliver Yang

Bing Hu

Qichao Xia

Phoebe Ningning Cheng

Mengwei Jiao

Lyne Yuwei Li

Aaron Wei Wei

Cory Gu

Assaf Natanzon

Tao Chen

Junping Zhao

Bing Liu

Long Wang

Wenbo Wang

Tao Xu

Wesley M Shao

Joel Vance Miller

Martin Chaojun Mei

Xiangqing Yang

Yujuan Li

James Fei Wu

Victor Li

Kenny Honglin Qiao

Jason Zeng

A method and system for backing up and restoring data includes: determining, at a server storage area network (SAN) node, an LUN required for protection within a server SAN node based on communication between a backup agent and a logic unit number (LUN) agent in the server SAN node; determining a target backup device based on communication between the backup agent and respective target agent of a plurality of backup devices, the plurality of backup devices being connected with the server SAN node; and transmitting a virtual disk control command to the target backup device in response to the backup or restoration being triggered, such that data in the LUN required for protection is backed up to the target backup device or restored from the target backup device via an activated virtual disk interface of the target backup device.

Method and system for backing up and restoring data

One embodiment provides a computer implemented method for recovering an operating system (OS) after a runtime hang using a dual-flash device. The method includes detecting a first runtime hang of a server; initiating a first reboot from a hard disk; detecting a second runtime hang of the server; and initiating a second reboot from the dual-flash device.

System and method for recovering an operating system after a runtime hang using a dual-flash device

Embodiments are described for prioritizing input/output (I/O) operations dispatched from a storage media to a host bus adapter in a network, by tagging, in an I/O tagging module, the I/O operations in a file system supporting applications generating the I/O operations, wherein all child I/O operations initiated from a parent I/O operation are tagged with a same unique tag ID; tracking a time of arrival of each I/O operation of the I/O operations; and dispatching, in a transactional I/O scheduler, all sibling I/O's of the parent I/O operation based on a unique tag ID for the sibling I/Os, a respective time of arrival of each of the sibling I/Os, and defined quality of service (QoS) requirements.

Achieving storage system performance guarantees by applying transactional I/O scheduling

One embodiment provides a computer implemented method of data compression including segmenting user data into data segments; deduplicating the data segments to form deduped data segments; compressing the deduped data segments into compression units using a hardware accelerator; packing the compression units into compression regions; and packing the compression regions into one or more containers.

System and method for increasing logical space for native backup appliance

There is provided a method and device for data replication. The method comprises: obtaining, in a network interface card, data segments by segmenting input first data; determining, in the network interface card, fingerprints corresponding to the data segments; and comparing, in a central processing unit, the fingerprints of the data segments with existing fingerprints corresponding to processed data segments, and determining, based on a result of the comparing, whether to de-duplicate the data segments corresponding to the fingerprints, to perform the data replication.

Method and device for data replication

One embodiment provides a computer implemented method of balancing mixed workload performance including monitoring the compression and decompression workload at a hardware accelerator using the hardware accelerator quality of service (QoS) scheduler; monitoring the compression and decompression workload at a CPU using the CPU QoS scheduler; comparing the workload at the hardware accelerator and the workload at the CPU; and allocating tasks between the hardware accelerator and the CPU to obtain an optimal bandwidth at the hardware accelerator and the CPU.

System and method of balancing mixed workload performance

Embodiments are described for prioritizing input/output (I/O) operations dispatched to a solid-state device (SSD) cache in a network, by defining a maximum write I/O operation size for writing data to the SSD cache, splitting large write I/O operations into smaller write I/O operations, each with a size less than the maximum write I/O operation size, interleaving cache read I/O operations in between the smaller write I/O operations, and performing the cache read I/O operations and the smaller write I/O operations in an order created by the interleaving. The network may comprise a deduplication backup system storing data to storage media including the SSD cache.

Achieving guaranteed application performance using transactional I/O scheduling for SSD storage by interleaving and splitting read/write I/Os with required latency configurations

One embodiment provides a computer implemented method for installing an operating system (OS) using a dual-flash device. The method includes burning an OS version to the dual-flash device located on a server. The method also includes setting BIOS to boot the server from the dual-flash device; triggering installation of the OS version on the server from the dual-flash device; and setting BIOS to boot from a hard disk of the server after installation of the OS version.

System and method for operating system installation using a dual-flash device

Embodiments are described for prioritizing input/output (I/O) operations dispatched to a solid-state device (SSD) storage in a network, determining properties of the SSD storage based on SSD device type, where the SSD storage maintains a plurality of caches, receiving a plurality of SSD I/Os from an application I/O request comprising at least one of a cache read or a cache write operation, creating a respective queue for each SSD I/O of the SSD I/Os based on a type of SSD I/O, prioritizing the each SSD I/O based on the type of the SSD I/O and the properties of the SSD storage that is the target for a respective SSD I/O, and dispatching, in a transactional I/O SSD scheduler, all queued SSD I/Os to the SSD storage based on the prioritizing.

Achieving guaranteed application performance using transactional I/O scheduling for SSD storage using known read/write latencies

Embodiments of the present disclosure relate to a method and an apparatus for backup communication. The method comprises: detecting a failure of a management interface between a processor and a baseboard management controller; in response to detecting the failure of the management interface, performing backup communication between the processor and the baseboard management controller using a control interface, wherein the baseboard management controller can obtain a physical parameter of the processor via the control interface; and transmitting a packet between the processor and the baseboard management controller via the control interface.

Method and apparatus for backup communication

One embodiment provides a computer implemented method of dynamically allocating compression jobs including monitoring compression performance at a plurality of compression levels within a hardware accelerator; comparing compression performance between the plurality of compression levels; and dynamically allocating compression jobs between the plurality of compression levels to achieve a guaranteed average performance.

System and method of dynamically allocating compression jobs

Technology for simulating a slow storage disk. The technology intercepts an input/output I/O command to be dispatched to a storage disk and simulates a slow storage disk with the storage disk by injecting a delay to the dispatch of the intercepted I/O command based on a predetermined delay injection policy.

Method and apparatus for simulating slow storage disk

Configuring virtual machines for garbage collection in a deduplication backup system executed on a server computer in a cloud computing network, by configuring at least one virtual machine (VM) of a plurality of virtual machines in a VM cluster to be data protection virtual machines (DP VMs), by enabling only read and write operations to/from the DP VMs, interconnecting a garbage collection VM (GC VM) of the VM cluster to the DP VMs, configuring the GC VM to perform only garbage collection tasks for the DP VMs, and providing data access credentials from each DP VM to the GC VM to facilitate the garbage collection tasks.

Method and system for garbage collection of data protection virtual machines in cloud computing networks

One embodiment provides a computer implemented method of data compression using a hardware accelerator. A first thread pool for compression jobs, and a first polling thread is allocated for polling the status of a hardware accelerator. A compression thread is retrieved from the first thread pool in response to a compression request from a file system. Multiple source data buffers from the file system are aggregated into a compression unit, and a scatter gather list and destination buffer are submitted to the hardware accelerator. A checksum of result data is calculated from the destination buffer. A zlib header is added to the result data, and the checksum is added as a zlib footer to the result data.

Performance optimization and support compatibility of data compression with hardware accelerator

Embodiment of the present disclosure provides a system, a computer program product and a method for managing a peripheral component interface express device hotplug by receiving an operation command from a user through a user command interface module; sending, in response to reception of the operation command, the operation command to a hotplug management module via an interface provided by a hotplug interface library; and performing, by the hotplug management module, the operation command by means of at least one of an interface provided by an operating system, a kernel of the operating system, and at least one of a corresponding plurality of hotplug group service modules, in response to receiving the operation command.

Growing community of inventors

Beijing, China

Colin Yong Zou