Poor Cluster Shared Volume read/write performance when node is not CSV owner
We have a 5 node Windows Server 2016 Failover Cluster setup using an HPE Nimble as shared storage. We're using the cluster for Hyper-V. All virtual machine VHDXs are stored on the cluster shared volume (CSV). We're having a problems with disk…
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…
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…
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…
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…
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…
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…
Opening VM Settings is Slow - But Everything Else is Fast in Failover cluster Manager and Hyper-V
Any time I try to open settings on a VM, whether that be through Hyper-V Manager or Failover Cluster Manager, and regardless of whether I open it on a host, from my desktop, it can take up to 5 minutes for the settings page to come up. This happens every…
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…
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.
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…
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…
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,…
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 . …
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…
Renaming ClusterNetworkInterface
PS c:\Windows\system32> Get-ClusterNetworkInterface Name Node Network State \---- ---- ------- ----- N01 - FOO (1) N01 Foo Network Up N02 - FOO (1) N02 Foo Network Up …
WS2019 cluster Error 106 - available processor set of the underlying physical NICs not configured correctly because processor sets overlap when LBFO is configured with sum-queue mode
Hello! In event viewer i have this error in my WS2019 cluster of two nodes. Available processor sets of the underlying physical NICs belonging to the LBFO team NIC /DEVICE/{1A5602OS02-H2E4-46C6-09OA-1WEON5473890} (Friendly Name: Microsoft Network…
Arc servers machines are already connected to a different subscription id or resource group when creating cluster in Azure portal
I am using azure portal to create a cluster but ran into an issue during Azure Stack HCI Arc Integration validation. "Title": "Test Arc for servers machines state", "Status": 1, "Severity": 2,…
kerberos resolution target error
i create a WSFC with quorum , after that I create an FCI on NODE1 and NODE2 everything completed successfully , but after the installation of the second node on server manager dashboard i got this error from manageability : sqcluster - kerberos target…
Unable to create cluster
This account may not have enough CPU cores to start a cluster. Contact your administrator to increase the limits.