Hits Multiple Targets With The Same HA Arrow
Summary
Downtime is never a good thing for any business, except maybe for those who sell high availability clustering and disaster recovery software for a living. Specifically, this MNRS feature is available with the Maxava HA Enterprise+ edition of the software, which is aimed at very large IBM i shops that need more capabilities than the base Maxava SMB product delivers, such as MQ Series replication, QDLS replication, and simulated role swapping between source and target machines to actually see if the role swaps work. The MNRS feature keeps everything in the group absolutely synchronized, while daisy chaining would add some latencies as replications cascade outward from the production systems. In addition to the MNRS feature, Maxava has also boosted the performance of the replication of the IFS file system so it takes advantage of the multithreaded nature of modern Power processors like the Power8 and Power9 chips. We are not sure how much of a performance boost this parallel IFS replication gives, but we assume it is pretty substantial provided that the links between the two servers are not starved for bandwidth.
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