How does DB2's HADR feature ensure data consistency between primary and standby servers?

  • By asynchronously transferring log files to the standby server
  • By mirroring the primary server's storage to the standby server
  • By periodically comparing data checksums between servers
  • By synchronously replicating data changes to the standby server
DB2's High Availability Disaster Recovery (HADR) feature ensures data consistency between primary and standby servers by synchronously replicating data changes from the primary server to the standby server. This ensures that both servers have identical data at all times, minimizing the risk of data inconsistency in the event of a failover. 
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