US Patent No. 10,599,531

USING DATA SET COPIES FOR RECOVERY OF A DATA SET IN EVENT OF A FAILURE


Patent No. 10,599,531
Issue Date March 24, 2020
Title Using Data Set Copies For Recovery Of A Data Set In Event Of A Failure
Inventorship Thomas C. Reed, Tucson, AZ (US)
David C. Reed, Tucson, AZ (US)
Assignee INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)

Claim of US Patent No. 10,599,531

1. A computer program product for maintaining backup copies of a data set, the computer program product comprising a computer readable storage medium having computer readable program code embodied therein that is executable to perform operations, the operations comprising:storing a plurality of copies of a data set receiving updates from at least one processing system;
in response to an update to the data set, determining an update group to include at least one copy of the data set that was not in a last determined update group to which a previous update was applied and to exclude at least one copy of the data set that was in the last determined update group;
applying the update to the data set to the copies of the data set in the update group, wherein updates are not applied to the copies of the data set not in the update group; and
in response to a failure event, determining whether to recover the data set from one of the copies of the data set in the update group or one of the copies of the data set not in the update group.