公开(公告)号：DE602008005275D1

公开(公告)日：2011-04-14

申请号：DE602008005275

申请日：2008-01-30

Applicant: IBM

Inventor： ASH KEVIN JOHN ,  GUPTA LOKESH MOHAN ,  LOWE STEVEN ROBERT ,  SANCHEZ ALFRED EMILIO ,  TODD KENNETH WAYNE

IPC: G06F11/20 ,  G06F12/08

公开(公告)号：AT511140T

公开(公告)日：2011-06-15

申请号：AT07822534

申请日：2007-11-13

Applicant: IBM

Inventor： JARVIS THOMAS CHARLES ,  PETERSON BETH ANN ,  STANLEY WARREN KEITH ,  TODD KENNETH WAYNE

IPC: G06F11/14

Abstract: An apparatus, system, and method are disclosed for detecting mismatches in a mirror volume. A receive module receives a start indicator from a primary storage system. The start indicator includes a starting location of a first block to be modified on a track in a secondary storage system. The first block corresponds to an identically located first block of a modified record in the primary storage system. The tracks the first blocks on the primary and secondary storage systems each comprise irregular count key data ("CKD") tracks. A compare module compares the first block location indicated by the start indicator with block locations listed in track metadata. The track metadata describes user records on the irregular CKD tracks of the secondary storage system. An alert module generates an alert in response to the first block not aligning with a beginning block of a record on the secondary storage system.