公开(公告)号：US20210294742A1

公开(公告)日：2021-09-23

申请号：US17017934

申请日：2020-09-11

Applicant: Hitachi, Ltd.

Inventor： Akira YAMAMOTO ,  Ryosuke TATSUMI ,  Yoshinori OHIRA ,  Junji OGAWA

IPC: G06F12/0804 ,  G06F3/06

Abstract: In a complex system including; one or more storage systems including a cache and a storage controller; and one or more storage boxes including a storage medium, the storage box generates redundant data from write data received from a server, and writes the write data and the redundant data to the storage medium. The storage box transmits the write data to the storage system when it is difficult to generate the redundant data or it is difficult to write the write data and the redundant data to the storage medium. The storage system stores the received write data in the cache.

公开(公告)号：US20170351602A1

公开(公告)日：2017-12-07

申请号：US15545094

申请日：2015-02-27

Applicant: HITACHI, LTD.

Inventor： Masatsugu OSHIMI ,  Yoshihiro OIKAWA ,  Hiroshi HIRAYAMA ,  Junji OGAWA

IPC: G06F12/02 ,  G11C16/04 ,  G06F12/04 ,  G06F3/06 ,  G11C7/10 ,  G11C16/34 ,  G11C11/56

CPC classification number: G06F12/0238 ,  G06F3/0608 ,  G06F3/061 ,  G06F3/0649 ,  G06F3/0655 ,  G06F3/0688 ,  G06F12/00 ,  G06F12/04 ,  G11C7/1045 ,  G11C11/5628 ,  G11C11/5642 ,  G11C16/0475 ,  G11C16/3418 ,  G11C2207/102

Abstract: To determine whether or not to data is compressed at a timing when a non-volatile memory device receives the data from a host apparatus. A storage controller transmits a specified logical address range, an update frequency level of the specified logical address range, and specified data to a device controller. On the basis of the update frequency level of the specified logical address range, the device controller determines whether the specified data is compressed or not. When determination is made that the specified data is compressed, the device controller compresses the specified data to generate compressed data, and writes the compressed data into a non-volatile memory. When determination is made that the specified data is not compressed, the device controller writes the specified data into the non-volatile memory.

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：US20160328154A1

公开(公告)日：2016-11-10

申请号：US15110310

申请日：2014-02-26

Applicant: HITACHI, LTD.

Inventor： Nagamasa MIZUSHIMA ,  Junji OGAWA ,  Atsushi KAWAMURA

IPC: G06F3/06

Abstract: A storage device provides a logical space based on a storage medium that is configured by a plurality of logical areas to the higher-level apparatus, and a base data range exists in the storage medium for each logical area. The storage device reads the base data from the base data range that is corresponded to a write destination logical area to which the write destination logical address belongs, and creates difference data that is an exclusive OR of first data that is the base data and second data that is any one of data based on write data and the write data. The storage device creates compressed difference data by compressing the difference data, writes the compressed difference data to the storage medium, and associates a difference data range that is a range in which the compressed difference data has been written with the write destination logical area.

Abstract translation: 存储装置基于由多个逻辑区域配置到上位装置的存储介质提供逻辑空间，并且在每个逻辑区域的存储介质中存在基本数据范围。 存储装置从与写入目的地逻辑地址所属的写入目的地逻辑区域对应的基础数据范围读取基础数据，并生成作为基础数据的第一数据和第二数据的异或的差异数据 这是基于写入数据和写入数据的任何一个数据。 存储装置通过压缩差异数据来创建压缩差分数据，将压缩差分数据写入存储介质，并将作为压缩差分数据的范围的差异数据范围与写入目的地逻辑区域相关联。

公开(公告)号：US20160306557A1

公开(公告)日：2016-10-20

申请号：US15192066

申请日：2016-06-24

Applicant: Hitachi, Ltd.

Inventor： Hideyuki KOSEKI ,  Junji OGAWA

IPC: G06F3/06

CPC classification number: G06F3/0605 ,  G06F3/0608 ,  G06F3/0616 ,  G06F3/0647 ,  G06F3/0659 ,  G06F3/0665 ,  G06F3/067 ,  G06F3/0688

Abstract: A storage apparatus is provided with a plurality of nonvolatile semiconductor storage media and a storage controller that is a controller that is coupled to the plurality of semiconductor storage media. The storage controller identifies a first semiconductor storage unit that is at least one semiconductor storage media and a second semiconductor storage unit that is at least one semiconductor storage media and that is provided with a remaining length of life shorter than that of the first semiconductor storage unit based on the remaining life length information that has been acquired. The storage controller moreover identifies a first logical storage region for the first semiconductor storage unit and a second logical storage region that is provided with a write load higher than that of the first logical storage region for the second semiconductor storage unit based on the statistics information that indicates the statistics that is related to a write for every logical storage region. The storage controller reads data from the first logical storage region and the second logical storage region, and writes data that has been read from the first logical storage region to the second logical storage region and/or writes data that has been read from the second logical storage region to the first logical storage region.

公开(公告)号：US20160259687A1

公开(公告)日：2016-09-08

申请号：US14426716

申请日：2014-03-28

Applicant: HITACHI, LTD.

Inventor： Tomohiro YOSHIHARA ,  Akira YAMAMOTO ,  Shigeo HOMMA ,  Junji OGAWA

IPC: G06F11/10 ,  G06F3/06

CPC classification number: G06F11/1076 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0688 ,  G06F3/0689

Abstract: The storage system according to the present invention comprises a controller, and multiple storage device constituting a RAID group. When storing write data to multiple discontinuous areas within stripes of a storage device, the storage system transmits a new data transmission command containing information for specifying the multiple discontinuous areas and a write data to the storage device, and thereafter, receives an intermediate parity generated from multiple write data and data before update of the multiple write data from the storage device, and then transmits the received intermediate parity and an intermediate parity transmission command to the storage device storing the parity. Thereafter, a data commitment command containing information for specifying multiple discontinuous areas is transmitted to multiple storage devices, and the storage device storing the parity generates a parity after update from the received intermediate parity and a parity before update corresponding to the intermediate parity, and stores the parity after update in a storage media.

Abstract translation: 根据本发明的存储系统包括控制器和构成RAID组的多个存储设备。 当将写数据存储到存储装置的条带内的多个不连续区域时，存储系统将包含用于指定多个不连续区域的信息和写入数据的新数据传输命令发送到存储装置，然后接收从 从存储装置更新多次写入数据之前的多个写入数据和数据，然后将接收到的中间奇偶校验和中间奇偶校验发送命令发送到存储奇偶校验的存储装置。 此后，将包含用于指定多个不连续区域的信息的数据承诺命令发送到多个存储装置，并且存储该奇偶校验的存储装置从接收的中间奇偶校验生成更新后的奇偶校验以及对应于中间奇偶校验的更新前的奇偶校验，并存储 在存储介质中更新后的奇偶校验。

公开(公告)号：US20160011938A1

公开(公告)日：2016-01-14

申请号：US14762841

申请日：2013-08-30

Applicant: HITACHI, LTD.

Inventor： Hideyuki KOSEKI ,  Takashi TSUNEHIRO ,  Junji OGAWA ,  Nagamasa MIZUSHIMA ,  Atsushi KAWAMURA

IPC: G06F11/10 ,  G11C29/52 ,  G06F3/06

CPC classification number: G06F11/1068 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0679 ,  G06F11/1076 ,  G06F12/0246 ,  G06F12/04 ,  G06F12/16 ,  G06F2211/1014 ,  G06F2212/214 ,  G06F2212/403 ,  G06F2212/7202 ,  G06F2212/7208 ,  G11C29/52

Abstract: In a storage apparatus including a storage medium including a plurality of pages as a unit of reading and writing data, a first data block including a data block received from a higher-level device is generated, a second data block of a predetermined size including one or more undivided first data blocks is generated, a third data block in which a correction code is added to the second data block is generated, the third data block is stored in a page buffer, and one or more of the third data blocks stored in the page buffer is written in a page, which is a write destination, out of the pages of the storage medium.

Abstract translation: 在包括作为读取和写入数据的单元的多个页面的存储介质的存储装置中，生成包括从上级装置接收的数据块的第一数据块，包括一个预定尺寸的第二数据块，包括一个 或更多未分割的第一数据块，则生成校正码被添加到第二数据块的第三数据块，第三数据块被存储在页缓冲器中，并且存储在第三数据块中的一个或多个 页面缓冲器被写入存储介质的页面中的作为写入目的地的页面中。