公开(公告)号：US20240078347A1

公开(公告)日：2024-03-07

申请号：US18112079

申请日：2023-02-21

Applicant: Hitachi, Ltd.

Inventor： Nagamasa MIZUSHIMA ,  Yoshihiro YOSHII ,  Naoya OKADA

IPC: G06F21/78 ,  G06F21/60 ,  G06F21/64

CPC classification number: G06F21/78 ,  G06F21/602 ,  G06F21/64

Abstract: A computer includes a processor including a plurality of registers, a memory, and a storage medium. A processor of a computer is configured to execute an encryption process of generating encrypted user data including a plurality of encrypted data blocks using the plurality of registers, and add a DIF including CRC to the encrypted data blocks and store the result in a storage medium. The encryption process includes repeatedly executing a first process of reading partial data from a predetermined number of the data blocks and storing the partial data in a first register, a second process of storing encrypted partial data obtained by encrypting the partial data stored in the first register in a second register, and a third process of executing an operation for calculating CRC using the encrypted partial data stored in the second register and storing a result of the operation in a third register.

公开(公告)号：US20190278484A1

公开(公告)日：2019-09-12

申请号：US16119589

申请日：2018-08-31

Applicant: HITACHI, LTD.

Inventor： Ryosuke TATSUMI ,  Yoshihiro YOSHII

IPC: G06F3/06 ,  G06F12/02

Abstract: A computer system connected to an external computer issuing a data input/output request and a storage device, includes a logical storage area of a first layer of the storage device and a logical storage area of a second layer of the external computer. The logical storage area of the first layer includes a common area and an individual area. A storage area of the common area is associated with one or more of the second layer's logical storage areas. A storage area of the individual area is associated with one storage area of the second layer's logical storage area. The computer system performs duplication determination on a plurality of data sets and associates a plurality of data sets determined as being duplicated with the common area to associate the storage area of the common area with a plurality of storage areas of the logical storage area of the second layer.

公开(公告)号：US20230400982A1

公开(公告)日：2023-12-14

申请号：US18176707

申请日：2023-03-01

Applicant: Hitachi, Ltd.

Inventor： Hiroka IHARA ,  Nobuhiro YOKOI ,  Takashi NAGAO ,  Yoshihiro YOSHII

IPC: G06F3/06

CPC classification number: G06F3/061 ,  G06F3/0641 ,  G06F3/0679

Abstract: A storage system includes: a central processing unit; a main memory; first management information that associates a hash value of received data with an address in a volume; and an I/O processing package. The I/O processing package includes an I/O processor and an I/O memory. The I/O processor executes protocol processing. The I/O processor executes at least a part of search processing of an address associated with a hash value of first received data in the first management information. The central processing unit controls execution of deduplication processing of the first received data based on data of an address associated with the hash value of the first received data.

公开(公告)号：US20220012337A1

公开(公告)日：2022-01-13

申请号：US16923489

申请日：2020-07-08

Applicant: Hitachi, Ltd.

Inventor： Yoshihiro YOSHII ,  Masanori TAKADA

IPC: G06F21/56 ,  G06F12/0891

Abstract: Example implementations described herein are directed to systems and methods to accelerating the time to identify the latest snapshot that is not infected by malware and swap the snapshot for an underlying volume for a host computer without needing to communicate with the storage administrator of the storage system. In example implementations described herein, an iterative process is utilized to traverse snapshots through a storage plug-in application until such a snapshot is identified. Through the example implementations described herein, such snapshots can be identified quickly in comparison to manual selection.

公开(公告)号：US20180095873A1

公开(公告)日：2018-04-05

申请号：US15549283

申请日：2015-05-12

Applicant: HITACHI, LTD.

Inventor： Hiroshi NAKAGOE ,  Akira YAMAMOTO ,  Yoshihiro YOSHII

IPC: G06F12/02 ,  G06F3/06 ,  G06F17/30

Abstract: A storage system selects from a plurality of physical areas constituting a physical address space as copy source physical areas, one or more non-additionally recordable physical areas each including a fragmented free area, and also selects a recordable physical area as a copy destination physical area. The storage system then writes one or more pieces of live data from the selected one or more copy source physical areas to the free area of the selected copy destination physical area on a per-strip or per-stripe basis, sequentially from the beginning of the free area. If the size of the write target data is such that it is not possible to write the write target data to the free area on a per-strip or per-stripe basis, then the storage system pads the write target data, and writes the padded write target data to the free area on a per-strip or per-stripe basis.

公开(公告)号：US20170123679A1

公开(公告)日：2017-05-04

申请号：US15128089

申请日：2014-04-22

Applicant: HITACHI, LTD.

Inventor： Yoshihiro YOSHII ,  Kazuei HIRONAKA ,  Akira YAMAMOTO ,  Norio SHIMOZONO

IPC: G06F3/06 ,  G06F12/0802

CPC classification number: G06F3/0608 ,  G06F3/06 ,  G06F3/0619 ,  G06F3/0661 ,  G06F3/0685 ,  G06F12/04 ,  G06F12/0802 ,  G06F12/0804 ,  G06F12/0868 ,  G06F12/1009 ,  G06F2212/1016 ,  G06F2212/1024 ,  G06F2212/262 ,  G06F2212/312 ,  G06F2212/401 ,  G06F2212/60

Abstract: A storage system is adapted for efficiency by defining beforehand a first size, which is the maximum data that can be read at one time, a second size, which is equal to or less than the first size, and a third size, which is a factor of the first size. A controller provides a virtual volume comprising a plurality of virtual pages. Upon receiving a write request, the controller allocates a pool area comprising a plurality of stripes of the first size, stores the write request data in a cache, and when writing the data stored in the cache to the storage device, compresses the data in accordance with the third size unit, selects a storage area in accordance with the second size unit, and writes the compressed data to the selected second size storage area sequentially from the start address of a free area without leaving spaces therebetween.

公开(公告)号：US20190243582A1

公开(公告)日：2019-08-08

申请号：US16330944

申请日：2017-06-20

Applicant: HITACHI, LTD.

Inventor： Ai SATOYAMA ,  Tomohiro KAWAGUCHI ,  Yoshihiro YOSHII

IPC: G06F3/06 ,  G06F12/02 ,  G06F12/10

CPC classification number: G06F3/0661 ,  G06F3/06 ,  G06F3/0604 ,  G06F3/0673 ,  G06F12/02 ,  G06F12/0253 ,  G06F12/04 ,  G06F12/10 ,  G06F2212/1044 ,  G06F2212/657

Abstract: When a real area is allocated to a write destination virtual area in a virtual volume, a storage device determines whether or not a size of compressed new data is larger than a size of the allocated real area. In a case where the determination result is true, the storage device determines whether or not there is one or more real areas having a size equal to or larger than the size of the compressed new data and including a garbage area that is a real area serving as garbage. In a case where the determination result is true, the storage device selects one or more real areas including the garbage area, allocates, instead of the allocated real area, the selected one or more real areas to the write destination virtual area, and manages the allocated real area as a garbage area.

公开(公告)号：US20180039423A1

公开(公告)日：2018-02-08

申请号：US15552988

申请日：2015-05-12

Applicant: HITACHI, LTD.

Inventor： Yoshihiro YOSHII ,  Yasuo WATANABE ,  Yoshinori OHIRA

IPC: G06F3/06

CPC classification number: G06F3/0608 ,  G06F3/0641 ,  G06F3/065 ,  G06F3/068 ,  G06F3/0689 ,  G06F12/00

Abstract: This storage system is designed to: divide data into a plurality of chunk data (pieces of data) in a deduplication process; select one or more chunk data from among the plurality of chunk data in accordance with a sampling period which indicates that, on average, one chunk data be selected from among each N chunk data; and calculate a fingerprint, such as a hash value, for each of one or more characteristic chunk data, which are the selected one or more chunk data, and determine whether data including the one or more characteristic chunk data is a duplication. The storage system changes the sampling period on the basis of the results of past deduplication processes.

公开(公告)号：US20170075620A1

公开(公告)日：2017-03-16

申请号：US15122533

申请日：2014-04-24

Applicant: HITACHI, LTD.

Inventor： Akira YAMAMOTO ,  Junji OGAWA ,  Norio SHIMOZONO ,  Yoshihiro YOSHII ,  Kazuei HIRONAKA ,  Atsushi KAWAMURA

IPC: G06F3/06

CPC classification number: G06F3/0641 ,  G06F3/0608 ,  G06F3/0659 ,  G06F3/0688 ,  G06F11/1004 ,  G06F12/0246 ,  G06F12/084 ,  G06F12/0866 ,  G06F12/0871 ,  G06F12/0873 ,  G06F12/1009 ,  G06F12/109 ,  G06F17/30097 ,  G06F17/3015 ,  G06F2212/1044 ,  G06F2212/1048 ,  G06F2212/2022 ,  G06F2212/263 ,  G06F2212/466 ,  G06F2212/657

Abstract: A storage system according to the present invention has a plurality of flash packages equipped with a deduplication function. When a storage controller transmits a write data and a feature value of write data to a flash package, the flash package compares contents of the write data with data having a same feature value as the feature value of the write data. As a result of the comparison, if there is no corresponding data, the write data is stored in the flash memory, but if there is a corresponding data, the new data will not be stored. Thus, a greater number of data can be stored in the flash memory while preventing deterioration of performance.

Abstract translation: 根据本发明的存储系统具有配备有重复数据删除功能的多个闪存包。 当存储控制器将写入数据和写入数据的特征值发送到闪存包时，闪存包将写入数据的内容与具有与写入数据的特征值相同的特征值的数据进行比较。 作为比较的结果，如果没有对应的数据，写入数据被存储在闪存中，但是如果存在相应的数据，则不会存储新的数据。 因此，可以在闪速存储器中存储更多数量的数据，同时防止性能的恶化。

公开(公告)号：US20150350301A1

公开(公告)日：2015-12-03

申请号：US14813232

申请日：2015-07-30

Applicant: HITACHI, LTD.

Inventor： Nobuhiro YOKOI ,  Mutsumi HOSOYA ,  Nagamasa MIZUSHIMA ,  Yoshihiro YOSHII ,  Masabumi SHIBATA

IPC: H04L29/08 ,  H04L29/06

CPC classification number: H04L67/06 ,  G06F3/06 ,  G06F12/1081 ,  G06F15/17331 ,  H04L67/1097 ,  H04L67/42

Abstract: The transfer data amount between a server and storage is effectively reduced, and the broadband of an effective band between the server and the storage is realized. An interface device is located in a server module, and, when receiving a read request issued by a server processor, transmits a read command based on the read request to a storage processor. In a case where a reverse-conversion instruction to cause the interface device to perform reverse conversion of post-conversion object data acquired by converting object data of the read request is received from the storage processor, DMA to transfer post-conversion object data stored in the transfer source address on a storage memory to the transfer destination address on the server memory while reverse-converting the post-conversion object data is performed.

Abstract translation: 有效降低了服务器与存储器之间的传输数据量，实现了服务器与存储之间的有效带宽。 接口设备位于服务器模块中，并且当接收到由服务器处理器发出的读取请求时，将读取的请求发送到存储处理器。 在从存储处理器接收到通过转换被读取请求的对象数据而获取的转换后对象数据进行反向转换的反向转换指令的DMA来传送存储在存储器中的转换后对象数据 执行在存储存储器上的转移源地址到服务器存储器上的传送目的地地址，同时反转转换后转换对象数据。