公开(公告)号：DE602004007925D1

公开(公告)日：2007-09-13

申请号：DE602004007925

申请日：2004-06-08

Applicant: IBM

Inventor： FACTOR MICHAEL ,  FIENBLIT SHACHAR ,  HAYARDENY AMIRAN ,  JARVIS THOMAS CHARLES ,  MATOSEVICH RIVKA MAYRAZ ,  MICKA WILLIAM FRANK ,  NURIEL IFAT ,  RAHAV SHELI ,  SHUKEVICH SVETLANA ,  SPEAR GAIL ANDREA ,  TAL SIVAN ,  TZAFRIR DALIT

IPC: G06F3/06 ,  G06F11/20 ,  G06F12/00 ,  G06F12/08

Abstract: Provided are a method, system, and program for managing a relationship between one target volume and one source volume. For each of the source volume and target volume, the memory includes: (i) at least one element, wherein each element represents a range of sequential data units in the volume; (ii) at least one relationship entry, wherein each relationship entry represents one relationship; (iii) at least one element pointer associating one element with one relationship entry, wherein the data units represented by the element are part of the relationship represented by the relationship entry that the pointer associates with the element; and (iv) one relationship pointer for each relationship entry associating the relationship entry with volume metadata, wherein the volume metadata provides information on the relationship represented by the relationship entry.

公开(公告)号：DE69506155D1

公开(公告)日：1999-01-07

申请号：DE69506155

申请日：1995-03-02

Applicant: IBM

Inventor： MICKA WILLIAM FRANK ,  SHOMLER ROBERT WESLEY

IPC: G06F12/00 ,  G06F11/20 ,  G11C29/00 ,  G06F11/14

Abstract: Asynchronous remote data duplexing at a distant location is performed from copies based at a primary site storage subsystem using first and second pluralities of subsystems 12, 14 at primary and remote sites respectively. Each of the first plurality of subsystems is independently coupled to one or more of the second plurality of subsystems. The first plurality of subsystems are interconnected and the second plurality of subsystems are also interconnected. The method utilizes checkpoint messages to maintain sequence integrity between the first and second plurality of subsystems without the use of a centralized communications service.

公开(公告)号：DE69502125D1

公开(公告)日：1998-05-28

申请号：DE69502125

申请日：1995-02-07

Applicant: IBM

Inventor： KERN ROBERT FREDERIC ,  MICKA WILLIAM FRANK ,  MIKKELSEN CLAUS WILLIAM ,  PAULSEN MICHAEL ALOYSIUS ,  SHOMLER ROBERT WESLEY

IPC: G06F3/06 ,  G06F11/20 ,  G06F13/00 ,  G11C29/00 ,  G06F11/14

Abstract: A remote data shadowing system provides synchronous, storage based, real time disaster recovery wherein a secondary site is located remote from the primary site. An error recovery program at the primary site quiesces applications running thereat for performing error recovery procedures and signalling both primary and secondary locations that failed duplex has occurred. The error recovery program determines the cause of failed duplex, and if error recovery is successful, duplex mode is resumed. If the error recovery program is unable to perform error recovery successfully, then further write updates at the primary site are prohibited and an error message is communicated to operators at both the primary and secondary sites.

公开(公告)号：DE602006009708D1

公开(公告)日：2009-11-19

申请号：DE602006009708

申请日：2006-11-21

Applicant: IBM

Inventor： BOYD KENNETH WAYNE ,  FLYNN JOHN THOMAS ,  KERN ROBERT FREDERIC ,  MCBRIDE GREGORY EDWARD ,  MICKA WILLIAM FRANK ,  SHACKELFORD DAVID MICHAEL

IPC: G06F11/14

Abstract: An apparatus, system, and method are disclosed for continuously protecting data. A mirror module mirrors a primary record set to a base record set. A log module accumulates each record change to the primary record set in a log. A change selection module selects a record change from the log. A change application module applies the selected record change to the base record set to form a recovered record set.

公开(公告)号：SG135961A1

公开(公告)日：2007-10-29

申请号：SG2004032850

申请日：2004-06-01

Applicant: IBM

Inventor： FACTOR MICHAEL E ,  HAYARDENY AMIRAM ,  JARVIS THOMAS CHARLES ,  SPEAR GAIL ANDREA ,  MICKA WILLIAM FRANK ,  TAL SIVAN ,  TZAFRIR DALIT ,  MATOSEVICH RIVKA MAYRAZ ,  RAHAV SHELI ,  NURIEL IFAT ,  FIENBLIT SHACHAR ,  SHUKEVICH SVETLANA

IPC: G06F11/07 ,  G06F11/20 ,  G06F12/08 ,  G06F12/00

Abstract: Provided are a method, system, and program for managing a relationship between one target volume and one source volume. Information is maintained in memory on an existing relationship between at least one source volume and at least one target volume, comprising: (i) at least one element, wherein each element represents a range of sequential data units in the volume; (ii) at least one relationship entry, wherein each relationship entry represents one relationship; and (iii) at least one element pointer associating one element with one relationship entry, wherein the data units represented by the element are part of the relationship represented by the relationship entry that the pointer associates with the element. A new relationship between at least one target volume and at least one source volume is added. Further, added is a new relationship entry in the memory representing the new relationship and one new element pointer is added in the memory for each element including data units included in the new relationship to associate the element with the new relationship entry, wherein the data units represented by the element are part of the new relationship.

公开(公告)号：DE69312781T2

公开(公告)日：1998-02-12

申请号：DE69312781

申请日：1993-04-13

Applicant: IBM

Inventor： COHN ODED ,  HARTUNG MICHAEL HOWARD ,  MICKA WILLIAM FRANK ,  MCCAULEY JOHN NORBERT ,  MIKKELSEN CLAUS WILLIAM ,  NAGIN KENNETH MICHAEL ,  NOVICK YORAM ,  WINOKUR ALEXANDER

IPC: G06F3/06 ,  G06F11/00 ,  G06F11/14 ,  G06F12/00 ,  G06F12/16

Abstract: A method and system disclosed for enhanced efficiency of backup copying of designated datasets stored within storage devices (61) coupled to the data processing system via a storage control unit (65) having memory (66) therein. Application execution is temporarily suspended to form a dataset logical-to-physical address concordance to be utilized to administer backup copying. Application initiated updates to uncopied portions of the designated datasets are temporarily deferred until sidefiles of the affected portions are written to memory (66). Portions of the designated datasets are then accessed and copied utilizing selected data retrieval command sequences. A sidefile status query is appended to said command sequences and the presence of data within memory (66) is determined. The sidefiles are then accessed and copied to alternate storage locations in a backup copy order defined by the address concordance.

公开(公告)号：DE2725395A1

公开(公告)日：1978-01-05

申请号：DE2725395

申请日：1977-06-04

Applicant: IBM

Inventor： MICKA WILLIAM FRANK ,  ROBINSON THOMAS SCOTT

IPC: G06K9/20 ,  G06T3/40 ,  G06T3/60 ,  G06F5/00 ,  G11C9/00 ,  H04N1/00

Abstract: 1533833 Storage arrangements INTERNATIONAL BUSINESS MACHINES CORP 15 June 1977 [30 June 1976] 25032/77 Heading G4A In apparatus for rotating by 90 degrees video data having 2048 bits per scan line, the data is deserialized and stored, parallel by byte, in successive row locations of a memory (40, Fig. 2, not shown) holding 2048 bytes in 8 rows, by incrementing address counter (41). Read out into registers (50-57) is effected column by column by incrementing the top 3 bits of the address counter for each state of the bottom 8 bits from which the rotated data may be read to an 8 by 8 storage array (60-67) so that corresponding bits of the 8 read out bytes are stored in the same column. Preferably two memories 118, 122 (Fig. 3) are used, one being read out whilst the other is loaded under the control of two counters (204, 206, Fig. 4, not shown) the first incremented normally for loading and the second having its top 3 bits incremented for each state of the bottom 8 bits for unloading, the top 3 bits being decoded to select to which if registers 150-157 the read out data is fed.