公开(公告)号：AT479940T

公开(公告)日：2010-09-15

申请号：AT08749789

申请日：2008-04-28

Applicant: IBM

Inventor： SHACKELFORD DAVID

IPC: G06F11/14 ,  G06F11/20

Abstract: Provided are a method, system, and article of manufacture wherein a point-in-time copy operation command for a point-in-time copy of a point-in-time source volume to a point-in-time target volume is received while performing continuous copy operations from continuous copy source volumes to continuous copy target volumes. A determination is made as to whether the point-in-time target volume is a first continuous copy source volume and whether the point-in-time source volume is a second continuous copy source volume. A determination is made of metadata corresponding to the point-in-time copy operation, in response to determining that the point-in-time target volume is the first continuous copy source volume and the point-in-time source volume is the second continuous copy source volume. Point-in-time copy operations are performed on the continuous copy target volumes based on the determined metadata to execute the point-in-time copy operation command while performing the continuous copy operations.

公开(公告)号：AT445185T

公开(公告)日：2009-10-15

申请号：AT06830072

申请日：2006-11-21

Applicant: IBM

Inventor： BOYD KENNETH ,  FLYNN JOHN ,  KERN ROBERT ,  MCBRIDE GREGORY ,  MICKA WILLIAM ,  SHACKELFORD DAVID

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：DE602005000819T2

公开(公告)日：2008-01-10

申请号：DE602005000819

申请日：2005-01-07

Applicant: IBM

Inventor： SHACKELFORD DAVID ,  MCBRIDE GREGORY

IPC: G06F11/20

Abstract: Provided are a system and article of manufacture for copying storage, wherein a first unit receives data updates from a second unit. The data updates are stored in a plurality of physical storage locations associated with the first unit. Links are generated to at least one of the plurality of physical storage locations to achieve consistent data between the first unit and the second unit.