-
公开(公告)号：DE69636330T2
公开(公告)日：2007-06-06
申请号：DE69636330
申请日：1996-08-29
Applicant: EMC CORP
Inventor： OFEK YUVAL , YANAI MOSHE
-
公开(公告)号：EP0695443A4
公开(公告)日：1997-08-27
申请号：EP94914223
申请日：1994-04-20
Applicant: EMC CORP
Inventor： YANAI MOSHE , VISHLITZKY NATAN , ALTERESCU BRUNO , SHKLARSKY GADI , CASTEL DANIEL
CPC classification number: G06F11/2071 , G06F3/0601 , G06F3/0608 , G06F3/061 , G06F3/0619 , G06F3/064 , G06F3/065 , G06F3/0661 , G06F3/0689 , G06F11/2066 , G06F11/2074 , G06F11/2079 , G06F11/2082 , G06F2003/0697 , G11B20/1217 , H04L29/06 , H04L67/1095 , H04L69/26 , H04L69/40 , Y10S707/99942
Abstract: A data storage system which automatically provides and maintains identical secondary data on a preferably geographically remote secondary data storage device. The system includes a primary host computer located in the first geographic location which is coupled to a primary data storage system also located in the first geographic location. The primary data storage system includes at least one primary data storage device on which primary data is to be stored, and a primary data storage system controller which receives data from the primary host computer and controls the storing of the primary data on the primary data storage device. The primary data storage controller is coupled by high speed communication link to a secondary data storage system controller of a secondary data storage system, and coordinates the copying of the primary data to the secondary data storing system, and is responsive to an acknowledgement from the secondary data storage system controller of at least successful receipt of the primary data for updating the maintained list of the primary data to indicate that the copied primary data has been received by the secondary data storage system to be copied to the secondary data storage device.
Abstract translation: 一种数据存储系统，其自动在优选地理上远程的辅助数据存储设备上提供和保持相同的辅助数据。 该系统包括位于第一地理位置的主要主计算机，该第一地理位置耦合到同样位于第一地理位置的主要数据存储系统。 主数据存储系统包括至少一个主数据存储设备，主数据将被存储在该主数据存储设备上，以及主数据存储系统控制器，其从主主机计算机接收数据并且控制主数据存储器在主数据存储器上的存储 设备。 主数据存储控制器通过高速通信链路耦合到次级数据存储系统的次级数据存储系统控制器，并且协调主数据到次级数据存储系统的复制，并且响应于来自次级数据存储系统的次级数据 数据存储系统控制器至少成功接收主要数据，用于更新维护的主要数据列表，以指示已复制的主要数据已经被次要数据存储系统接收以复制到次要数据存储设备。
-
公开(公告)号：DE69636330D1
公开(公告)日：2006-08-17
申请号：DE69636330
申请日：1996-08-29
Applicant: EMC CORP
Inventor： OFEK YUVAL , YANAI MOSHE
-
-
5.发明公开SYSTEM AND METHOD FOR ON-LINE, REAL-TIME, DATA MIGRATION 失效SYSTEM UND VERFAHRENFÜRON-LINE- UND ECHZEIT-DATENMIGRATION
公开(公告)号：EP0789877A4
公开(公告)日：1998-11-11
申请号：EP96930609
申请日：1996-08-29
Applicant: EMC CORP
Inventor： OFEK YUVAL , YANAI MOSHE
CPC classification number: G06F3/0607 , G06F3/0647 , G06F3/067 , G06F3/0689 , G06F12/0638 , G06F12/08 , G06F12/0866 , G11B5/86 , G11B19/02
Abstract: A system and method (25, 27) for providing on-line, real-time, transparent data migration from a first data storage system (14) to a second data storage system (16). The second data storage system is interposed between a host (12) and the first data storage system. A data map (24) identifies data elements stored on the second data storage system and corresponding data elements copied from the first to the second data storage system. In response to a host data request, the second data storage retrieves the data if stored therein. Otherwise, the second data storage system retrieves the data from the first data storage system, writes the data to itself and updates the data map. When not busy servicing requests, the second data storage system copies data from the first to the second data storage device independently of any coupled host.
Abstract translation: 一种用于提供从第一数据存储系统（14）到第二数据存储系统（16）的在线，实时，透明数据迁移的系统和方法（25,27）。 第二数据存储系统插入在主机（12）和第一数据存储系统之间。 数据图（24）标识存储在第二数据存储系统上的数据元素和从第一数据存储系统复制到第二数据存储系统的相应数据元素。 响应主机数据请求，第二数据存储器检索存储在其中的数据。 否则，第二个数据存储系统从第一个数据存储系统中检索数据，将数据写入自己并更新数据映射。 当不忙服务请求时，第二数据存储系统独立于任何耦合的主机将数据从第一数据存储设备复制到第二数据存储设备。
-
Patent Agency Ranking
公开(公告)号：EP0650616A4
公开(公告)日：1997-01-29
申请号：EP93915190
申请日：1993-06-03
Applicant: EMC CORP
Inventor： YANAI MOSHE , VISHLITZKY NATAN , ALTERESCU BRUNO , CASTEL DANIEL
CPC classification number: G06F12/121 , G06F12/0862 , G06F12/0866 , G06F12/123 , G06F2212/502 , G06F2212/6026 , Y10S427/104
Abstract: A cache management system and method monitors and controls the contents of cache memory (12) coupled to at least one host (22a) and at least one data storage device (18a). A cache indexer (16) maintains a current index (25) of data elements which are stored in cache memory (12). A sequential data access indicator (30), responsive to the cache index (16) and to a user selectable sequential data access threshold, determines that a sequential data access is in progress for a given process and provides an indication of the same. The system and method allocate a micro-cache memory (12) to any process performing a sequential data access. In response to the indication of a sequential data access in progress and to a user selectable maximum number of data elements to be prefetched, a data retrieval requestor requests retrieval of up to the selected maximum number of data elements from a data storage device (18b). A user selectable number of sequential data elements determines when previously used micro-cache memory locations will be overwritten. A method of dynamically monitoring and adjusting cache management parameters is also disclosed.
-
公开(公告)号：DE69332022T2
公开(公告)日：2002-10-02
申请号：DE69332022
申请日：1993-06-03
Applicant: EMC CORP
Inventor： YANAI MOSHE , VISHLITZKY NATAN , ALTERESCU BRUNO , CASTEL DANIEL
Abstract: A cache management system and method monitors and controls the contents of cache memory (12) coupled to at least one host (22a) and at least one data storage device (18a). A cache indexer (16) maintains a current index (25) of data elements which are stored in cache memory (12). A sequential data access indicator (30), responsive to the cache index (16)and to a user selectable sequential data access threshold, determines that a sequential data access is in progress for a given process and provides an indication of the same. The system and method allocate a micro-cache memory (12) to any process performing a sequential data access. In response to the indication of a sequential data access in progress and to a user selectable maximum number of data elements to be prefetched, a data retrieval requestor requests retrieval of up to the selected maximum number of data elements from a data storage device (18a). A user selectable number of sequential data elements determines when previously used micro-cache memory locations will be overwritten. A method of dynamically monitoring and adjusting cache management parameters is also disclosed.
-
公开(公告)号：DE69426264D1
公开(公告)日：2000-12-14
申请号：DE69426264
申请日：1994-04-20
Applicant: EMC CORP
Inventor： YANAI MOSHE , VISHLITZKY NATAN , ALTERESCU BRUNO , SHKLARSKY GADI , CASTEL DANIEL
Abstract: Two data storage systems are interconnected by a data link for remote mirroring of data. Each volume of data is configured as local, primary in a remotely mirrored volume pair, or secondary in a remotely mirrored volume pair. Normally, a host computer directly accesses either a local or a primary volume, and data written to a primary volume is automatically sent over the link to a corresponding secondary volume. Each remotely mirrored volume pair can operate in a selected synchronization mode including synchronous, semi-synchronous, adaptive copy-remote write pending, and adaptive copy-disk. Direct write access to a secondary volume is denied if a "sync required" attribute is set for the volume and the volume is not synchronized.
-
公开(公告)号：AU684773B2
公开(公告)日：1998-01-08
申请号：AU6638094
申请日：1994-04-20
Applicant: EMC CORP
Inventor： YANAI MOSHE , VISHLITZKY NATAN , ALTERESCU BRUNO , SHKLARSKY GADI , CASTEL DANIEL
IPC: G06F12/16 , G06F3/06 , G06F11/14 , G06F11/20 , G06F12/00 , G06F13/00 , G11B20/12 , H04L29/06 , G06F11/16
Abstract: Two data storage systems are interconnected by a data link for remote mirroring of data. Each volume of data is configured as local, primary in a remotely mirrored volume pair, or secondary in a remotely mirrored volume pair. Normally, a host computer directly accesses either a local or a primary volume, and data written to a primary volume is automatically sent over the link to a corresponding secondary volume. Each remotely mirrored volume pair can operate in a selected synchronization mode including synchronous, semi-synchronous, adaptive copy-remote write pending, and adaptive copy-disk. Direct write access to a secondary volume is denied if a "sync required" attribute is set for the volume and the volume is not synchronized.
-
-
-
-
-
-
-
-
-
Search Results
13
records
(took 0.022 seconds)
