Event ID - 609

Event Id609
SourceESENT
Descriptionwins (3432) The database engine is initiating index cleanup of database " as a result of an NT version upgrade.
Event InformationAccording to Microsoft:
RESOLUTION:
Do not run mixed Windows 2000 and Windows Server 2003 nodes in the same cluster when you are using DHCP and WINS resources for an extended amount of time. Because the DHCP and WINS resources can only run on the Windows Server 2003 nodes, there may be a single point of failure, and because of this, you may not have high availability. If you are performing a rolling upgrade to Windows Server 2003:
1. Move the DHCP and WINS resources to node.
2. Upgrade node 1 from Windows 2000 to Windows Server 2003.
3. Move the DHCP and WINS resources to node 1.
4. Upgrade node 2 from Windows 2000 to Windows Server 2003. You will now be able to fail the resources back and forth without issue.
Reference LinksWINS and DHCP Resources Do Not Failover in Mixed Server Cluster

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