Patents Examined by Mehdi Namazi
  • Patent number: 10365938
    Abstract: Systems and methods for managing data input/output operations are described that include virtual machines operating with a shared storage within a host. In such a system, a computer-implemented method is provided for dynamically provisioning cache storage while operating system applications continue to operate, including stalling the virtual machine's local cache storage operations, changing the provision of cache storage size; and resuming the operations of the virtual machine.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: July 30, 2019
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Vikram Joshi, Yang Luan, Manish R. Apte, Hrishikesh A. Vidwans, Michael F. Brown
  • Patent number: 10331378
    Abstract: A method of operating a memory module can include receiving, at the memory module, an active command and an associated row address that indicates that the active command is directed to a volatile memory device included in the memory module or to a non-volatile memory device included in the memory module. The volatile memory device or the non-volatile memory device can be activated based on the associated row address in response to the active command. Status information can be provided at the memory module indicating readiness of the memory module for receipt of an operation command associated with the active command and the associated row address.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: June 25, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youngjin Cho, Hee Hyun Nam, Hyo-Deok Shin, Junghwan Ryu
  • Patent number: 10303619
    Abstract: A method and an apparatus for determining a physical address are disclosed. According to the present disclosure, a page size is obtained according to the higher-order N bits of a linear address, where N is greater than 0 and less than a quantity of bits of the linear address; an index number of a translation lookaside buffer TLB is obtained according to the page size; a mask is obtained according to the page size and a supported minimum page size; a label of the TLB is obtained according to the mask; the higher-order MAC1 bits of a physical address corresponding to the linear address are obtained by searching the TLB according to the index number and the label; and the physical address is obtained according to the mask, the supported minimum page, and the higher-order MAC1 bits of the physical address.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: May 28, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Lixin Zhang, Ke Zhang, Yi Zhang, Lele Zhang
  • Patent number: 10289334
    Abstract: A valid data merging method, a memory controller and a memory storage apparatus are provided. The method includes: grouping physical erasing units in a data area to at least a first group and a second group; selecting a first physical erasing unit from the second group; and copying valid data of the first physical erasing unit to a second physical erasing unit. A trim table recording special type data of the physical erasing units of the first group is not stored in a non-volatile rewriteable memory module, and a trim table recording special type data of the physical erasing units of the second group is stored in the non-volatile rewriteable memory module. The valid data does not include the special type data of the first physical erasing unit.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: May 14, 2019
    Assignee: PHISON ELECTRONICS CORP.
    Inventor: Horng-Sheng Yan
  • Patent number: 10235093
    Abstract: A system and method for creating and managing snapshots. Mediums are recorded and maintained, all of which are read-only except for the most recent mediums in use by a volume. Multiple volumes may be maintained, including a first volume which points to a first medium. When a snapshot of the first volume is taken, a second medium is created that points to the first medium. The first volume is also updated to point to the second medium. The first medium becomes the underlying medium of the second medium, and lookups are performed initially on the second medium and then on the first medium if the data is not located in the second medium.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: March 19, 2019
    Assignee: Pure Storage, Inc.
    Inventors: John Colgrove, Ethan Miller, John Hayes, Cary Sandvig, Christopher Golden, Jianting Cao
  • Patent number: 10228875
    Abstract: Data writing and reading methods for a flash. The data writing method comprises: when remaining spaces of a data area and of an index area of a physical page are sufficient, sequentially storing present-instance write data into the data area of the physical page, and generating an index journal and sequentially writing same into the index area of the physical page; otherwise, organizing actual data in the physical page, storing the actual data into a data area of an idle page, and generating, on the basis of the actual data, an index journal and writing same into an index area of the idle page. The data reading method comprises: acquiring the actual memory address of to-be-read data on the basis of the index journal in the index area of the physical page, and reading the data from the actual memory address.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: March 12, 2019
    Assignee: FEITIAN TECHNOLOGIES CO., LTD.
    Inventors: Zhou Lu, Huazhang Yu
  • Patent number: 10223506
    Abstract: An object storage system providing a secure object destruction and deletion service is provided. The destruction and deletion of files can be handled through secure overwriting of files on a storage medium or through cryptographic scrambling of file contents followed by subsequent deletion from a file table. The triggering of secure deletion can be periodically scheduled or dependent upon some particular event, making files self-destructing. Methods and systems for periodic re-authorization of files are also provided, allowing self-destructing files to be persisted in an available state.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: March 5, 2019
    Assignee: Rackspace US, Inc.
    Inventor: Gregory Holt
  • Patent number: 10209910
    Abstract: A system, method, and computer program product for managing storage volumes in a point-in-time copy cascade. A processor swaps a host portion of a source volume with a host portion of a snapshot point-in-time copy volume. Responsive to an I/O request to overwrite a first data value in a grain of the source volume with a second data value, a processor writes the second data value in a corresponding grain of the snapshot point-in-time copy volume. Responsive to a corresponding grain of a clone point-in-time copy volume not comprising the first data value, a processor copies the first data value to the corresponding grain of the clone point-in-time copy volume.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: February 19, 2019
    Assignee: International Business Machines Corporation
    Inventors: Christopher B. E. Beeken, Joanna K. Brown, Carlos F. Fuente
  • Patent number: 10162536
    Abstract: A storage apparatus includes a semiconductor storage device, and a storage controller coupled to the semiconductor storage device, and which stores data to a logical storage area provided by the semiconductor storage device. The semiconductor storage device includes one or more non-volatile semiconductor storage media, and a medium controller coupled to the semiconductor storage media. The medium controller compresses data stored in the logical storage area, and stores the compressed data in the semiconductor storage medium. The size of a logical address space of the logical storage area is larger than a total of the sizes of physical address spaces of the semiconductor storage media.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 25, 2018
    Assignee: Hitachi, Ltd.
    Inventor: Takaki Matsushita
  • Patent number: 10162523
    Abstract: A storage controller coupled to a storage array comprising one or more storage devices initiates a transformation of data from a block-based storage system resident on the storage array to a file-based storage system resident on a storage array. The storage controller identifies a plurality of data blocks to be transformed from the block-based storage system and generates metadata for a file in the file-based storage system, the metadata to associate the plurality of data blocks with the file.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: December 25, 2018
    Assignee: Pure Storage, Inc.
    Inventors: Ethan Miller, Lydia Do, John Colgrove
  • Patent number: 10140051
    Abstract: Performing a file backup includes receiving a file to backup from a source machine and performing a write operation to write the file to a mount point in a file system on a backup server. The backup also includes intercepting a block-level data block to be written which is generated by the write operation; and writing the block-level data block to a corresponding, respective block of a disk image file having a plurality of blocks.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: November 27, 2018
    Assignee: CA, Inc.
    Inventors: Chuanqi Sun, Zhiye Wang
  • Patent number: 10133484
    Abstract: A hierarchal storage management method is provided. The method includes detecting a first portion of a first file being deleted from a hybrid storage device including a hard disk drive (HDD) memory device, a solid state drive (SSD) memory device, and an archival storage memory device. A first set of memory blocks associated with the first portion of the first file is identified. The first set of memory blocks are determined to reside on the SSD memory device. In response, the first set of memory blocks are transferred from the SSD memory device to a first portion of the hybrid storage device.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: November 20, 2018
    Assignee: International Business Machines Corporation
    Inventors: Blaine H. Dolph, Nataraj Nagaratnam, Sandeep R. Patil, Riyazahamad M. Shiraguppi
  • Patent number: 10133491
    Abstract: A method for updating a control device having a first processor core and having a first flash memory associated with the first processor core, in which the first processor core works with a first block of the first flash memory, in which while it is working, a second block, electronically separate from the first block, of the first flash memory is reprogrammed with a predefined memory image; and in which after reprogramming, the first processor core is switched over from the first block of the first flash memory to the second block of the first flash memory.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: November 20, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Axel Aue, Hans-Walter Schmitt, Matthias Schreiber
  • Patent number: 10120791
    Abstract: A data read apparatus includes a nonvolatile memory comprising a plurality of blocks, each of the blocks including an area storing block information, in which a position of a next block is written, or storing the block information and file management information, and an area storing actual data; a volatile memory; a power-on circuit configured to turn on supply of power to the nonvolatile memory and the volatile memory; and a processor. The processor is configured to: read out the block information stored in each of the blocks of the nonvolatile memory, or the block information and the file management information, when the supply of power was turned on by the power-on circuit, and register the read-out block information, or the block information and the file management information, in the volatile memory as file position information.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: November 6, 2018
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Shunsuke Yamada
  • Patent number: 10114568
    Abstract: A method for regulating a flow of data to backend storage devices includes generating, at a host system, writes intended for a backend storage volume. The method receives the writes into a first level cache of a storage virtualization appliance. The method further determines whether destaging the writes directly from the first level cache to the backend storage volume would cause a limit associated with the backend storage volume to be exceeded. If destaging the writes directly from the first level cache to the backend storage volume would cause the limit to be exceeded, the method destages the writes from the first level cache to a second level cache of the storage virtualization appliance. Otherwise, the method destages the writes directly from the first level cache to the backend storage volume. A corresponding system and computer program product are also disclosed.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: October 30, 2018
    Assignee: International Business Machines Corporation
    Inventors: John P. Agombar, Ian Boden, Gordon D. Hutchison, Lee J. Sanders
  • Patent number: 10108342
    Abstract: A SSD and a method for reducing use of DRAM in the SSD are disclosed. The method includes the steps of: A. providing a referring table in a DRAM module of a SSD; B. providing a logical-to-physical address table in the DRAM module; C. receiving a command for accessing a target data in a target logical address of the SSD; D. checking if one physical address is stored in the logical-to-physical address table; E. executing the command by using the mapping data in the subgroup or copying a corresponding subgroup including one mapping data for the target logical address from the mapping table to the DRAM module via the referring table; and; and F. adding a target physical address of the DRAM module where the mapping data for the target logical address is stored to the logical-to-physical address table so that the target logical address is able to correspond thereto.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: October 23, 2018
    Assignee: Storart Technology Co. Ltd.
    Inventor: Hou Yun Lee
  • Patent number: 10101934
    Abstract: Described herein are embodiments of a process that can be used to balance the allocation of primary memory between different types of information. In some embodiments, the memory allocation is balanced dynamically based on observed I/O patterns. Related system embodiments are also described.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: October 16, 2018
    Assignee: EMC Corporation
    Inventors: Tal Ben-Moshe, Eli Dorfman, Kirill Shoikhet, David Krakov, Roman Vainbrand, Noa Cohen
  • Patent number: 10102147
    Abstract: In a system in which a plurality of computing elements share a cache, each computing element owns a stripe of the cache. Each stripe contains cache objects that are accessible to all computing elements but managed only by the owning computing element. Each computing element maintains an LRU FIFO queue in local memory for the cache objects owned by that computing element. Each computing element also maintains a separate hash table in local memory for each other computing element. The hash tables indicate access to cache objects that are owned by those other computing elements. Each computing element updates its LRU FIFO queue when it accesses cache objects that it owns. The hash tables are periodically distributed by all computing elements via RDMA so that the LRU FIFO queues of all computing elements can be updated based on accesses to owned cache objects by other non-owner computing elements.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: October 16, 2018
    Assignee: EMC IP Holding Company LLC
    Inventors: Gabriel BenHanokh, Andrew Chanler, Felix Shvaiger, Hongliang Tang, Arieh Don
  • Patent number: 10095418
    Abstract: In a hierarchical storage system, blocks of data selected for auto-tiering migration, are selected based on dynamically adjusted group sizes. Contiguous blocks are organized into default groups. I/O activity of the blocks in a group is monitored. Based on the I/O activity, the default groups may be sub-divided into smaller sub-groups or combined into larger groups, to separate as much as practical, contiguous series of cooler blocks and contiguous series of hotter blocks into respective focused (concentrated) groups or sub-groups. The concentrated group or sub-group may then be migrated according to the average I/O activity of the included blocks. Group configurations are continually and dynamically adjusted according to changing I/O conditions.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: October 9, 2018
    Assignee: International Business Machines Corporation
    Inventors: Yongjie Gong, Shuang Shuang Li, Yang Liu, Mei Mei, Xue Qiang Zhou
  • Patent number: 10061798
    Abstract: A system and method for managing tables in a storage system is described.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: August 28, 2018
    Assignee: Pure Storage, Inc.
    Inventors: John Colgrove, Joseph S. Hasbani, John Hayes, Ethan Miller, Cary Sandvig