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Exchange Server DAG heartbeat modification safe and what's the best practice for it?
Hi Experts,
I just want to confirm, Is it safe to modify Exchange Server DAG heartbeat and what is the best practice for this? I did a research and found some stuff but I did not see a Microsoft Docs supporting the claims.
Thanks in advance!
- The DAG replication rate depends on the replication traffic.
By default, heartbeat frequency (subnet delay) is 1000ms for both local and remote subnets and when a node misses 5 heartbeats (subnet threshold) another nod within your DAG cluster will initiate a failover.
A related thread for your reference.
DAG Replication Bandwidth
http://social.technet.microsoft.com/Forums/en-US/f23ebc4a-f237-4d5d-922c-7549ae54d2e1/dag-replication-bandwidth
More information:
Planning for High Availability and Site Resilience
http://technet.microsoft.com/en-us/library/dd638104(v=exchg.150).aspx#NR
Configure Heartbeat and DNS Settings in a Multi-Site Failover Cluster
http://technet.microsoft.com/en-us/library/dd197562(WS.10).aspx
1 Reply
- The DAG replication rate depends on the replication traffic.
By default, heartbeat frequency (subnet delay) is 1000ms for both local and remote subnets and when a node misses 5 heartbeats (subnet threshold) another nod within your DAG cluster will initiate a failover.
A related thread for your reference.
DAG Replication Bandwidth
http://social.technet.microsoft.com/Forums/en-US/f23ebc4a-f237-4d5d-922c-7549ae54d2e1/dag-replication-bandwidth
More information:
Planning for High Availability and Site Resilience
http://technet.microsoft.com/en-us/library/dd638104(v=exchg.150).aspx#NR
Configure Heartbeat and DNS Settings in a Multi-Site Failover Cluster
http://technet.microsoft.com/en-us/library/dd197562(WS.10).aspx