You can snapshot your data somewhere and restore in the disaster recovery cluster every 30 minutes for example.
Or if you want something more "real-time", without using the Cross Cluster Replication feature, you can send your documents to both clusters at the same time.
Or may be safer, use a message broker like Kafka and read the queue from both clusters...
Apache, Apache Lucene, Apache Hadoop, Hadoop, HDFS and the yellow elephant
logo are trademarks of the
Apache Software Foundation
in the United States and/or other countries.