公开(公告)号：EP1674983A1

公开(公告)日：2006-06-28

申请号：EP05254525.8

申请日：2005-07-20

Applicant: Hitachi, Ltd.

Inventor： Yagi, Shuichi, c/o Hitachi, Ltd., I.P. Group ,  Taninaka, Dai, c/o Hitachi, Ltd., I.P. Group ,  Mashima, Takao, c/o Hitachi, Ltd., I.P. Group

IPC: G06F3/06 ,  G06F11/20

CPC classification number: G06F3/0635 ,  G06F3/0614 ,  G06F3/067 ,  G06F11/2005 ,  G06F11/201

Abstract: The present invention uses memory resources effectively and connects each storage device by a plurality of paths in a switchable manner, thus improving reliability and ease of use, by virtualizing external memory resources as internal memory resources. External storage 2 is connected to the main storage 1, and the actual volume 2A is mapped onto the virtual volume 1A. A plurality of paths is connected between the storage 1 and 2. When a failure occurs in a path in use (S3), the path having the next highest priority is selected (S4), and processing is continued using this path (S5).

Abstract translation: 本发明通过虚拟化作为内部存储器资源的外部存储器资源，有效地使用存储器资源并且以可切换的方式通过多个路径连接每个存储设备，从而提高可靠性和易用性。 外部存储器2连接到主存储器1，并且实际卷2A被映射到虚拟卷1A上。 多个路径连接在存储器1和2之间。当在使用中的路径中发生故障（S3）时，选择具有下一个最高优先级的路径（S4），并且使用该路径继续处理（S5）。

公开(公告)号：EP1655666A3

公开(公告)日：2006-06-28

申请号：EP05256812.8

申请日：2005-11-03

Applicant: Hitachi, Ltd.

Inventor： Aoki, Makoto, c/o Hitachi, Ltd ,  Hayashi, Takahiro, c/o Hitachi, Ltd

IPC: G06F11/20 ,  G06F11/34 ,  G06F12/00

CPC classification number: G06F11/34 ,  G06F11/008 ,  G06F11/2005 ,  G06F11/2007 ,  G06F11/201 ,  G06F11/2069 ,  G06F11/2089

Abstract: A plurality of logical units (121) are set in an information processing device (100) and a storage device (120) and connected by logical paths. The information processing device monitors the path state. When a state change of a path has occurred, the information processing device searches for a normal path connected to the logical unit and decides a logical unit to be an object of the read request. The information processing device issues a data read request to the logical unit decided. Moreover, when a failure has occurred in the path, the information processing device performs an access to the logical unit by utilizing a path other than the path where the failure has occurred and another path sharing a part of the path where the failure has occurred.

Abstract translation: 在信息处理装置（100）和存储装置（120）中设置多个逻辑单元（121），并通过逻辑路径连接。 信息处理设备监视路径状态。 当路径的状态改变已经发生时，信息处理设备搜索连接到逻辑单元的正常路径并且确定逻辑单元作为读取请求的对象。 信息处理设备向决定的逻辑单元发出数据读取请求。 此外，当在路径中发生故障时，信息处理设备通过利用发生故障的路径以外的路径和共享发生故障的路径的一部分的另一路径来执行对逻辑单元的访问。

公开(公告)号：EP1671444A1

公开(公告)日：2006-06-21

申请号：EP04730313.6

申请日：2004-04-29

Applicant: Nortel Networks Limited

Inventor： CORDINA, Kevin ,  COURTNEY, John ,  CARSON, Mark

IPC: H04L1/18 ,  G06F11/20 ,  G06F11/14

CPC classification number: G06F11/2071 ,  G06F11/201 ,  H04L1/18 ,  H04L49/90

Abstract: Hitless Switching provides a method of delivering data to a remote point in a reliable fashion. However, no guarantee or acknowledgement is provided that data has been written to a remote storage device. This is problematic for remote data mirroring. Apparatus and methods are provided to guarantee that data arriving at a remote terminal is correctly stored. Interaction with hitless switching and remote optical mirroring systems are described.

公开(公告)号：EP1668512A1

公开(公告)日：2006-06-14

申请号：EP04756088.3

申请日：2004-06-23

Applicant: Sierra Logic

Inventor： STEINMETZ, Joseph, H. ,  KOMPELLA, Murthy ,  WAKELEY, Matthew, P.

IPC: G06F12/00

CPC classification number: G06F3/0661 ,  G06F3/0607 ,  G06F3/0608 ,  G06F3/0611 ,  G06F3/0617 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0658 ,  G06F3/0689 ,  G06F11/201 ,  G06F11/2089 ,  H04L67/1097

Abstract: An integrated circuit implementing a storage-shelf router (1018) used along, or in combination with other storage-shelf routers (1014), and in combination with path controller cards, to interconnect the disks (1022-1025) within a storage shelf or disk array to a high-bandwidth communications medium through which data is exchanged between the individual disk drives or the storage shelf (1100) and a disk-array controller (1006). In various embodiments, the present invention provides virtual disk formatting by a storage shelf router (1018) and the storage shelf (1100) in which the storage-shelf is included, to external computing entities, such as disk-array controllers (1006) and host computers (1002). By providing virtual disk formatting, a storage-shelf router (1018) can provide to a disk-array controller (1006), and other external computing entities, the disk-formatting convention (4410) expected by the disk-array controller (1006), even though disk drives (1022-1025) and other storage systems that do not conform to the expected formatting conventions may be included in the storage shelf (1100) and interconnected to a disk-array controller (1018) and other external processing entities via an interface provided by a storage-shelf router (1018). Virtual disk formatting, in addition, allows a storage-shelf router to format a disk drive differently from the disk formatting expected by external computing entities, so that the storage-shelf router (1018) can transparently include additional information into disk sectors (4402), such as additional error-correction information.

公开(公告)号：EP1662369A2

公开(公告)日：2006-05-31

申请号：EP05253250.4

申请日：2005-05-26

Applicant: FUJITSU LIMITED

Inventor： Ohara, Shigeyoshi c/o Fujitsu Limited ,  Masuyama, Kazunori c/o Pfu Limited

IPC: G06F3/06 ,  G06F12/08

CPC classification number: G06F3/0689 ,  G06F3/0605 ,  G06F3/0619 ,  G06F3/0629 ,  G06F3/0665 ,  G06F3/0683 ,  G06F11/201 ,  G06F11/2089 ,  G06F12/0866

Abstract: A storage system has a plurality of control modules (4-0, 4-1, ..., 4-7) for controlling a plurality of storage devices (2-0, 2-1, ... , 2-25), which make mounting easier whilst maintaining a low latency response even if the number of control modules increases. A plurality of storage devices are connected to each control module using back end routers (5-0, 5-1, ..., 5-7), so that redundancy for all the control modules to access all the storage devices is maintained. The control modules and the back end routers are connected by a serial bus, which has a small number of signal lines, the interface being constituted by a back panel (7). This configuration can easily be scaled without mounting problems.

公开(公告)号：EP1655666A2

公开(公告)日：2006-05-10

申请号：EP05256812.8

申请日：2005-11-03

Applicant: Hitachi, Ltd.

Inventor： Aoki, Makoto, c/o Hitachi, Ltd ,  Hayashi, Takahiro, c/o Hitachi, Ltd

IPC: G06F11/20 ,  G06F11/34 ,  G06F12/00

CPC classification number: G06F11/34 ,  G06F11/008 ,  G06F11/2005 ,  G06F11/2007 ,  G06F11/201 ,  G06F11/2069 ,  G06F11/2089

Abstract: A plurality of logical units (121) are set in an information processing device (100) and a storage device (120) and connected by logical paths. The information processing device monitors the path state. When a state change of a path has occurred, the information processing device searches for a normal path connected to the logical unit and decides a logical unit to be an object of the read request. The information processing device issues a data read request to the logical unit decided. Moreover, when a failure has occurred in the path, the information processing device performs an access to the logical unit by utilizing a path other than the path where the failure has occurred and another path sharing a part of the path where the failure has occurred.

Abstract translation: 多个逻辑单元（121）被设置在信息处理设备（100）和存储设备（120）中，并通过逻辑路径连接。 信息处理装置监视路径状态。 当发生路径的状态改变时，信息处理设备搜索连接到逻辑单元的正常路径，并且将逻辑单元确定为读请求的对象。 信息处理装置向所决定的逻辑单元发出数据读取请求。 此外，当在路径中发生故障时，信息处理设备通过利用除了发生故障的路径之外的路径和共享发生故障的路径的一部分的路径来执行对逻辑单元的访问。

公开(公告)号：EP1347366A3

公开(公告)日：2006-02-15

申请号：EP02018811.6

申请日：2002-08-22

Applicant: Hitachi, Ltd.

Inventor： Fujimoto, Kazuhisa, c/o Hitachi, Ltd.

IPC: G06F3/06

CPC classification number: G06F11/2007 ,  G06F3/0607 ,  G06F3/0658 ,  G06F3/067 ,  G06F11/2005 ,  G06F11/201 ,  G06F11/2089

Abstract: The storage system includes disk control clusters (1-1 to 1-n). Each cluster has channel IF units (11), disk IF units (16) and local shared memory units. The channel IF units, disk IF units and local shared memory units in the plurality of disk control clusters are connected to each other across the disk control clusters by interconnection (31), global information control unit (21) for storing management information about the disk control clusters is connected to the interconnection. Host computers (2) and the channel IF units of the disk control clusters are connected via front-end switch (7) for storing copy of the management information. Since the front-end switch reflects the contents of the copy of the management information on routing table, an access request from the host computer can be sent to a suitable disk control cluster.

公开(公告)号：EP1552392A2

公开(公告)日：2005-07-13

申请号：EP03766835.7

申请日：2003-07-03

Applicant: Grass Valley (U.S.) Inc.

Inventor： MCDONNELL, Niall, Seamus ,  CROWTHER, David, Aaron ,  BAME, Daniel, Edwin ,  WOOD, Robert, Raymond

IPC: G06F11/00

CPC classification number: G06F11/201 ,  G06F11/2007 ,  G06F11/2053

Abstract: A media area network (10) includes a storage system (16) having at least one storage device (18) for storing digitized information. A host bus (14) adapter provides a link between the storage system and a host system (12) that provides overall control of the media area network. Within the host bus adapter, a lower-level port driver (24) monitors communications between the storage system and the host bus adapter. In the event of a communications failure, the lower-level port driver initiates switching from a failed port to an alternative port, thereby achieving fail-over recovery. Allocating the responsibility for fail-over recovery to the lower-level port driver assures timely handling of port failures, thereby reducing potential latency delays.

公开(公告)号：EP1370947A1

公开(公告)日：2003-12-17

申请号：EP02707860.9

申请日：2002-02-13

Applicant: Candera, Inc.

Inventor： SHAH, Nilesh ,  IBRAHIM, Rahim ,  TRAN, Nghiep ,  NGUYEN, Tuan

IPC: G06F12/08 ,  G06F15/173

CPC classification number: G06F12/1458 ,  G06F3/0605 ,  G06F3/0607 ,  G06F3/0614 ,  G06F3/0629 ,  G06F3/0632 ,  G06F3/0635 ,  G06F3/0665 ,  G06F3/067 ,  G06F11/0724 ,  G06F11/0727 ,  G06F11/0766 ,  G06F11/0793 ,  G06F11/1482 ,  G06F11/201 ,  G06F11/2025 ,  G06F11/2089 ,  G06F11/2092 ,  G06F11/2094 ,  G06F11/2097 ,  G06F2201/815 ,  H04L49/357 ,  H04L67/1097

Abstract: In a storage server on a storage area network, a media unit manager manages disk space in a manner transparent to the host computers. The media unit manager uses media units corresponding to the physical storage devices on the storage area network to build higher-level media units. The higher level media units can have the attributes of being sliced, concatenated, mirrored, striped, etc. Thus, the host computers need not be aware of the specific physical storage devices themselves, reducing the management and reconfiguration burden on the host computers when storage devices are added to or removed from the storage area network.

公开(公告)号：EP1194852A1

公开(公告)日：2002-04-10

申请号：EP00944952.1

申请日：2000-06-28

Applicant: EMC CORPORATION

Inventor： LINNELL, Thomas, Earl ,  TUCCIO, William, R. ,  MULVEY, Christopher, J.

IPC: G06F11/20 ,  H04L12/437

CPC classification number: G06F11/2094 ,  G06F11/2005 ,  G06F11/201 ,  H04L12/437

Abstract: A data storage system having a plurality of disk drives. Each one has a pair of ports. A pair of directors controls the flow of data to and from the disk drives. A first and second fibre channel port by-pass selector section are provided. The first fibre channel selector section includes: an input/output port coupled to a first one of the directors; and, a plurality of output/input ports connected between a first one of the ports of the plurality of desk drives through a first plurality of fibre channel links. The first fibre channel port by-pass selector section is adapted to couple the first one of the directors serially to one, or ones, of the first ports of the plurality of disk drives through a first fibre channel selectively in accordance with a control signal fed to the first fibre channel by-pass selector section. The first fibre channel includes one, or more, of the first plurality of fibre channel links. The second fibre channel port by-pass selector section is similarly configured.