Hi,
My current configuration: 2 Exchange 2010 SP2 servers hosting MBX/CAS/HUB roles in two different sites (x.x.1.0 and x.x.3.0/24 subnets with VPN between them) configured in a DAG. They have a secondary connection through LogMeIn Hamachi which uses 25.0.0.0/8 IPv4 network and IPv6 network as well. Currently the Hamachi network (listed as 2 subnets - the IPv4 and IPv6 ones) is marked as Internal. The 1.0 and 3.0 networks are listed as Enabled.
When Hamachi isn't working (sometimes the network adapters of Hamachi just block and stop trasmitting and receiving data) I think nothing's working at all (although they have the VPN connectivity and should be able to communicate over the other network). The radio button do not allow cluster communication on this network is not enabled anywhere.
When I check the resources...
1) the cluster name is Offline (normally, considering the rest of the list)
2) the 3.x address is Offline. When I try to bring it online it says: "The operation failed because either the specified cluster node is not the owner of the resource, or the node is not a possible owner of the resource." In the properties of this address both servers are listed and checked as possible owners and I tried to bring it online on both nodes. Same thing.
3) the 25.x.x.x address of one of the servers is there and listed as Failed. When I try to bring it online it says that it can't be brought online on any node.
4) the 25.x.x.x address of the other server is not listed at all.
5) there's an IPv6 address listed there, which is not an address that I can recognize (it doesn't belong to any of the nodes), it's also listed as Failed. My guess is that this should be the Hamachi address of the other server, but why it is IPv6 and why it's not the same as what I see on the networks page under the Hamachi address of the server in question I don't know... When I try to bring it online it also says that it can't be brought online on any node.
6) the 1.x address is Failed. When I try to bring it online it says: "The cluster resource could not be brought online by the resource monitor."
So all of my resources are either Failed or Offline.
Despite all the mentioned issues, the DAG is working when Hamachi's working. The database is switched over successfully on restart of one of the nodes and continues to function on the second one.
I want to make it's working even when Hamachi is down and I want to stop seeing all kinds of errors.
The File Share Witness is shown there as Online, but from time to time it also gives errors that is not accessible (when it is...).
Any ideas on any of the issues would be highly appreciated.
Thanks.