Hi , can someone please help me understand Managed failover mechanism . the explanation in document is confusing .
Is it correct to say that incase of a node failure , I will be able to have details of user session and metrics . However , transactional data will be lost for the time when node was down?
What is the replication factor of 3 means?
Thanks in advance.
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Quick summary - If you have 3node servers if say 1node is down. Still Dynatrace is capable to monitor with 2node servers.
Latency required is 10ms across 3node servers to sync between them. When a transaction is monitored its evenly distributed across 3nodes. So that no data are missed even if you have large volume of data coming to node servers.
Note- If their is high latency between Node servers. Then case can be upside down.
Ideally for critical environments you should have at least 3 servers to work properly. We have managed and 3 servers, very recently one of the disks of 1 server was corrupted and we had to repair it together with the system administrators. If we did not have 3 nodes and only 1, we would lose all the data. 100% recommended to have 3 nodes. NOTE, latency is important as well as time synchronization or time zone, you must use NTP.