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：AT508410T

公开(公告)日：2011-05-15

申请号：AT08775126

申请日：2008-07-16

Applicant: IBM

Inventor： EDEL STEPHEN ,  BOYD KENNETH ,  DAY III KENNETH ,  MCBRIDE GREGORY

IPC: G06F11/20

Abstract: Provided are a method, system, and article of manufacture for managing the copying of writes from primary storages to secondary storages across different networks. Information is maintained on a first group of at least one primary storage, at least one primary device managing Input/Output (I/O) access to the at least one primary storage, and at least one corresponding secondary storage to which writes to the at least one primary storage are copied and a second group of at least one primary storage, at least one primary device managing Input/Output (I/O) access to the at least one primary storage, and at least one corresponding secondary storage to which writes to the at least one primary storage are copied. A failure notification is received from one of the primary devices in the first or second group of a failure to copy a write from the primary device to the secondary device. A freeze command is issued over a first network, using a first network protocol, to the at least one primary device in the first group to stop copying writes to the corresponding at least one secondary device. A freeze command is issued over a second network, using a second network protocol, to the at least one primary device in the second group to stop copying writes to the corresponding at least one secondary device.