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ok, so in this case what's the best practice value for each of the scenario ?
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ok, so in this case what's the best practice value for each of the scenario ?

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Exactly what the validation report tells you it is.
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Exactly what the validation report tells you it is.

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People,<br />
<br />
I'm running Exchange Server 2013 SP1 on Hyper-V VMs, both are within the same AD Site and Geographical location (same data center, but different hosts).<br />
<br />
Here's the warning that I can see from Cluster Validation report:<br />
<a href="https://filedb.experts-exchange.com/incoming/2015/08_w33/929274/DAG-TTL.JPG" target="_blank" title="TTL (52 KB)"><img alt="TTL" class="file-block lazyload" style="max-width: 800px;" data-src="https://filedb.experts-exchange.com/incoming/2015/08_w33/800_929274/DAG-TTL.JPG" /></a><br />
WHy is tha running DAG across local clusters within the same Subnet/VLAN/AD Site geographical location requires higher threshold value compare to the stretched VLAN or different data center / geographical locations ?
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DAG-TTL.JPG

People,

I'm running Exchange Server 2013 SP1 on Hyper-V VMs, both are within the same AD Site and Geographical location (same data center, but different hosts).

Here's the warning that I can see from Cluster Validation report:


WHy is tha running DAG across local clusters within the same Subnet/VLAN/AD Site geographical location requires higher threshold value compare to the stretched VLAN or different data center / geographical locations ?

Exchange DAG TTL values ?

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

Active Directory

Hyper-V is a native hypervisor; it can create virtual machines on x86-64 systems and supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V Server supports remote access via Remote Desktop Connection. Administration and configuration of the host OS and the guest virtual machines is generally done over the network.