Windows Server 2019 Cluster vs Windows Server 2016 Cluster #ws2019 #winserv #Cluster   Leave a comment

This post is already a long pending post, now that there is an updated ISO with 1903 thought it is time to dust off this draft post.

Originally it was more an overview on what is change and a first impression, but then the server 2019 got postponed.

On the MSDN there is the ISO 1903 Or download the evaluation version


In the mean time on Microsoft doc’s there are already some overviews and these are showing all the details on what is changed between Server 2008,2012,2016 and 2019

Summary of hybrid capabilities when you extend your datacenter to Azure Source :

Feature description

Windows Server 2008 R2

Windows Server 2012 R2

Windows Server 2016

Windows Server 2019

Storage Migration Service helps to inventory and migrate data, security, and configurations from legacy systems to Windows Server 2019 and/or Azure.

Not supported in Windows Server 2008 R2 Not supported in Windows Server 2012 R2  Feature unavailable in Windows Server 2016 Fully supported in Windows Server 2019

Synchronizing file servers to Azure helps centralize your organization’s file shares in Azure Files while keeping the flexibility, performance, and compatibility of an on-premises file server.

 Feature unavailable in Windows Server 2008 R2  Included in Windows Server 2008 R2  Included in Windows Server 2016  Included in Windows Server 2019

System Insights brings local predictive analytics capabilities native to Windows Server. These predictive capabilities, each backed by a machine-learning model, locally analyze Windows Server system data to provide high-accuracy predictions that help reduce the operational expenses associated with reactively managing Windows Server instances.

Not supported in Windows Server 2008 R2 Not supported in Windows Server 2012 R2 Not supported in Windows Server 2016  Included in Windows Server 2019

Azure network adaptor easily connects to Azure virtual networks. Windows Admin Center performs the heavy lifting of configuring the VPN to a new network adapter that will connect Windows Server 2019 to a point-to-site Azure virtual network VPN.

Not supported in Windows Server 2008 R2 Not supported in Windows Server 2012 R2 Not supported in Windows Server 2016 Fully supported in Windows Server 2019

VM protection replicates workloads running on physical and virtual machines (VMs) from a primary site to a secondary location.

Not supported in Windows Server 2008 R2 Fully supported in Windows Server 2012 R2 Fully supported in Windows Server 2016 Fully supported in Windows Server 2019



Because Windows Server 2019 is a Long-Term Servicing Channel (LTSC) release, it includes the Desktop Experience. (Semi-Annual Channel (SAC) releases don’t include the Desktop Experience by design; they are strictly Server Core and Nano Server container image releases.) As with Windows Server 2016, during setup of the operating system you can choose between Server Core installations or Server with Desktop Experience installations.


Failover Clustering :
Here’s a list of what’s new in Failover Clustering.

  • Cluster sets
  • Azure-aware clusters
  • Cross-domain cluster migration
  • USB witness
  • Cluster infrastructure improvements
  • Cluster Aware Updating supports Storage Spaces Direct
  • File share witness enhancements
  • Cluster hardening
  • Failover Cluster no longer uses NTLM authentication
  • Application Platform


Setting up the Cluster is still the same, In powershell we install the feature and install some extra components like the file server and deDup etc

Get-WindowsFeature Failover-Clustering
install-WindowsFeature "Failover-Clustering","RSAT-Clustering","FS-FileServer","FS-Data-Deduplication","Print-Server","Containers","Storage-Replica"-IncludeAllSubFeature

install-WindowsFeature "Failover-Clustering","RSAT-Clustering","FS-FileServer","FS-Data-Deduplication","Print-Server","Containers","Storage-Replica","SMS","SMS-Proxy"-IncludeAllSubFeature


when installing the Cluster Components and creating the cluster you will see no difference.

Cluster based on Server 2016


Cluster based on server 2019


USB witness

You can now use a simple USB drive attached to a network switch as a witness in determining quorum for a cluster. This extends the File Share Witness to support any SMB2-compliant device.


This is a nice option, maybe not real enterprise but for small setups this is handy.

Failover Clusters no longer use NTLM authentication. Instead Kerberos and certificate-based authentication is used exclusively. There are no changes required by the user, or deployment tools, to take advantage of this security enhancement. It also allows failover clusters to be deployed in environments where NTLM has been disabled.

Clustering FileServer Data Deduplication

ReFS is the Recommended configuration for Storage spaces and can also configured with Data Deduplication


Below the Server 2016 layout with no dedup option on the storage



On the sizing no big changes that we saw as a limit in the day to day setup. More storage can be added, A lot more.

This could be handy in large storage clusters.



When looking at the Cluster settings there are some differences, this is all default I did not change anything. also handy when you want to know the original setting.

On windows 2019 vs Windows 2016



The CSV cache is now enabled by default to boost virtual machine performance. MSDTC now supports Cluster Shared Volumes, to allow deploying MSDTC workloads on Storage Spaces Direct such as with SQL Server. Enhanced logic to detect partitioned nodes with self-healing to return nodes to cluster membership. Enhanced cluster network route detection and self-healing.


More options and better to tune in the Cluster site.

Intra-cluster communication over Server Message Block (SMB) for Cluster Shared Volumes and Storage Spaces Direct now leverages certificates to provide the most secure platform. This allows Failover Clusters to operate with no dependencies on NTLM and enable security baselines.

Cluster Aware Updating (CAU) is now integrated and aware of Storage Spaces Direct, validating and ensuring data resynchronization completes on each node. Cluster Aware Updating inspects updates to intelligently restart only if necessary. This enables orchestrating restarts of all servers in the cluster for planned maintenance.

Moving Cluster from one domain to an other is now days also a scenario, with moving to the cloud consolidation and domain change is often a part of the migration.

Failover Clusters can now dynamically move from one Active Directory domain to another, simplifying domain consolidation and allowing clusters to be created by hardware partners and joined to the customer’s domain later.

Storage Replica is now available in Windows Server 2019 Standard Edition (with some limits)

There are some big list on the changes see for your self on what is change in Window Server 2019, it could be your choice during the migration of Windows server 2008 R2 EOL.

What’s new in Windows Server 2019 :

Windows Server Evaluations :


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Posted May 24, 2019 by Robert Smit [MVP] in Windows Server 2019

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