1,121 questions with Windows for business | Windows Server | Storage high availability | Clustering and high availability tags
Updating Hyper-V hosts with CAU
Hello All, Hope you all are okay and doing fine. In my new company that I started working with I'm thinking about optimizing the patching process of our Hyper-V hosts, they are all in a windows cluster. Doing some researches here, I stepped on Cluster…
Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Live Migration in Cluster Failing when VM started on the newest Server - Error 21026
Hello everyone, we are having the following three Servers in a HyperV Cluster with S2D Storage: Server4: 2 x Intel Xeon Gold 5120 CPU Server5: 2 x Intel Xeon Gold 6226R CPU Server6: 2 x Intel Xeon Gold 5520+ CPU We recently added Server6 to this…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Copy Cluster Resource (migrate) Fails to start in destination cluster due to Kerberos LSA permissions
Hello Community, Someone mentioned i should try posting here. essentially about a year ago I followed the steps from Microsoft to copy a cluster role from one cluster to another see…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
How do I set up multiple servers to act as a single, more powerful computer?
I received 3 identical HP servers, with dual 20 core xeon processors, and 256gb of ddr4 ram. They have 25Gb networking connections, and 8 2.5" HDD bays in the front that I intend on populating with a raid 6 array. I'm not familiar with windows…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Attach VHD set (.vhds) hard disk to virtual machine
I run 3 Windows Server 2022 virtual machines (VMs) on a HCI cluster as a Hyper-V guest cluster. I now want to add another VHD set hard disk (.vhds) to the guest cluster, so I create Test.vhds in for example C:\ClusterStorage\Datastore01\VHDSets on the…
Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Poor Performance in Cluster Shared Volumes
Hi All, I have noticed on several clusters upon which I've worked, that there is a huge fall off in the expected performance after LUNs added to the hosts are turned over into cluster shared volumes. With the LUNs attached to the hosts before…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Unexpected Double Network Traffic on Writes in a 2-Node S2D Cluster with Nested Mirror-Accelerated Parity
Hi all, I work at StarWind, and I'm currently exploring the I/O data path in Storage Spaces Direct for my blog posts. I’ve encountered an odd behavior with doubled network traffic on write operations in a 2-node S2D cluster configured with Nested…
Windows for business | Windows Server | Storage high availability | Clustering and high availability


Cluster aware updating behaviour
Cluster aware updating appears to be broken on at least Server 2019 and 2022 and on body has noticed, or is it just me. CAU should do the following: As per https://learn.microsoft.com/en-us/windows-server/failover-clustering/cluster-aware-updating…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Adding new NICs to SQL Server Cluster
Hi, we have 2-node SQL Server 2019 cluster in production. Former colleague did not use dedicated NICs just for inter-node heartbeat communication potentially causing issues on daily basis. I would like to add NIC/per cluster node in separate VLAN that…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Issue after canceling out of a CLuster aware update install
Hello, I was installing Cluster-aware updating (incorrectly) in my new Failover cluster and had to cancel during the install and now I have a computer object thats causing my Server manager to fail refresh. I've deleted the object from AD but its still…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
An error occurred adding a node to a cluster. The parameter is incorrect
We originally had a two-node Failover cluster running on Windows Server 2012 R2 systems. We want to eventually upgrade the Windows OS on both nodes to Windows Server 2016. We then moved all cluster resources to one node, and we then evicted the inactive…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Windows for business | Windows Server | User experience | Other
How to exclude a shadow copy path from on-access scanning?
While doing a file backup, Windows Security scanned and processed some files . I added the directory to the whitelist, but the Shadow copy of VSS was scanned and processed, which caused my backup to break. The easiest way to do this is to move that file…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Cluster disk not coming online when doing failover for 5 to 10 mins from node1 to node 2 but when doing it from node2 to node 1 all disks are coming up in 2-3 mins.
Cluster disk not coming online when doing failover for 5 to 10 mins from node1 to node 2 but when doing it from node2 to node 1 all disks are coming up in 2-3 mins. Checked logs for failure but didn't find any logs.
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Windows for business | Windows Server | User experience | Other

Issue connecting to primary replica on AAG environment
Hello. I have an always on availability group environment with three replica: SQL01 (as primary), SQL02 (as secondary), SQL03 (as secondary), using Microsoft SQL Server 2019 (RTM) - 15.0.2000.5 (X64). I encounter an issue where i could not connect to…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
SQL Server | Other

Replacing servers in a HYPER-V cluster and asking about processors and Live Migration.
Hi. I will be replacing two servers in our HYPER-V cluster. The new two DELL R760 servers will have Intel® Xeon® Gold 6426Y processors (16 cores per processor). I also have two DELL R750 servers in the cluster, which have Intel® Xeon® Gold 6326…
Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Windows for business | Windows Server | User experience | Other
Cluster disk resource is taking 15mins to come online after failover
Hi folks, We've a two-node cluster setup. We have configured a role which has three cluster disks (1 for quorum and other for data). Now, we have observed that whenever we failover from Node A to Node B (Node A --> Node B), it works fine. But,…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Windows for business | Windows Server | User experience | Other

[Windows Server 2022] Unable to add CSV in Failover Cluster
I have 2 domain controllers (of the same domain) running Windows Server 2022 (not 2016) and configured failover clustering (and disk quorum witness from an external storage array, accessible from both servers). However, I am unable to add Cluster Disks…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
WSFC Failover Cluster: The service has returned a service-specific error code
Hello. I want to create a Windows Server Failover Cluster. The cluster validation is successful, with one warning, because there is just one networkadapter per machine. A second for splitting client-traffic and cluster-traffic is already in planning . …
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Windows for business | Windows Client for IT Pros | User experience | Other
Can cluster sets (new feature of WS2019) work with shared (SAN) storage
Hi, Can cluster sets (new feature of WS2019) work with shared (SAN) storage? Separate clusters with shared block storage accessed by FC and VM files placed on CSV. i.e. storage is accessed by cluster nodes via FC, not SMB. (not hyperconverged) Kind…
Windows for business | Windows Server | Storage high availability | Clustering and high availability
Failover Cluster DNS changes/updates
Hi All, We have a failover cluster in place for our SQL environment. I have noticed that when it fails over it creates a new DNS record for the new IP of the SQL listener. I have removed all the DNS records, created one and then I have set up the DNS…