94 questions with Windows Server | High availability | Clustering and high availability tags
Event ID 1177 during patching in 2-node Windows Server 2025 cluster with FSW
Hi all, We are running SQL Server 2022 (16.0.4195) with AlwaysOn on a 2-node Failover Cluster on Windows Server 2025. The nodes are patched individually overnight using System Center, one node per night. The cluster uses a File Share Witness hosted on a…
Windows Server High availability Clustering and high availability
Cluster Update
Hi to all!!!. I have to Cluster Update!!!. All Cluster infrastructure is Windows Server 2016. Can I upgrade directly to Windows Server 2022? Or I have to update first to Windows Server 2019? This Cluster Infrastructure, support a SQL Always On. Thanks
Windows Server High availability Clustering and high availability
Cluster Functional Level
Dear; I have to Upgrade a Windows Server failover cluster with a cluster OS rolling upgrade!!!. My question is: It is necessary to execute Cluster Functional Level Update?. How long can the failover cluster run in mixed-OS mode?. If the Cluster…
Windows Server High availability Clustering and high availability
Do we need a quorum witness created for a 3 node SQL Always On cluster where 2 nodes in 1 datacenter and 1 node in 2nd datacenter?
Do we need a quorum witness created for a 3 node SQL Always On cluster where 2 nodes in 1 datacenter and 1 node in 2nd datacenter? If the production datacenter burns down taking down 2 out of the 3 nodes will the cluster automatically fail over to 3rd…
Windows Server High availability Clustering and high availability
Windows Failover cluster
In a Windows Server 2019 failover cluster environment consisting of four ___domain-joined nodes with the Hyper-V role configured, the Failover Cluster Manager is functioning correctly on only one node. On the remaining nodes, attempts to connect to the…
Windows Server High availability Clustering and high availability
Windows Failover Cluster IO - Role vs Disk Owner
We have a Windows Server 2022 cluster using iscsi mounted shared disks and running Hyper-V VM's. They have a direct connection with no gateway to the storage array on one nic and the company network on the other nic. When in Failover Cluster Manager,…
Windows Server High availability Clustering and high availability
Windows Failover Cluster Hostname Unreachable for Passive Node
Hi folks, We have a failover cluster setup. We don't have any issues with the cluster or its components but for some reason the cluster hostname is not reachable from anywhere except its active node, even from its passive node. This is an AVG SQL cluster…
Windows Server High availability Clustering and high availability
Remove node
Hi All, I have a Failover Cluster Manager setup with three nodes, all running Windows Server 2019. These nodes are part of an Always On Availability Group for SQL Server. I want to remove Node3 from the cluster. Node3 has already been removed from the…
Windows Server High availability Clustering and high availability
storage replica error (stretch cluster) The requested object could not be found
Hello everybody, we're running a two-node clustered file server. The nodes are virtualized and the storage for the file server is connected via iSCSI. We now extended the failover cluster to a four-node stretch cluster. The two new nodes are located in a…
Windows Server High availability Clustering and high availability
Windows Server 2019 S2D Remove-PhysicalDisk is denied
Hello everybody, at a customer's site still running Windows Server 2019 in a 4-node-Hyper-V-Cluster with S2D, on one hosts 3 (three!) disks failed on the same morning. One was already replaced by the hardware vendor, but neither of the three can be…
Windows Server High availability Clustering and high availability
Registering AlwaysON listener dns name
Hello! Consider the following: I'm creating a new availability group AG_TS with listener name = L_TS as the CNO (Cluster$) had the FC permission on OU with cluster nodes the L_TS$ computer account is created automatically in the same OU In DNS…
Windows Server High availability Clustering and high availability
WFC failover
Hello! I have a two-node WFC which is used for the AlwaysON AG. I'm used to monitor cluster failovers by 1641 events from FailoverClustering source: it usually displays something like "Cluster role "Role1" is moving from NODE1 to…
Windows Server High availability Clustering and high availability
unable to create object Cluster 2022 on active directory
We have a problem creating the Cluster object on our Active Directory. When I try to create the cluster object in the AD, it fails to create. I have created two VMs, one on 2012R2 and one on 2022. The cluster on 2012R2 works very well, but the one on…
Windows Server High availability Clustering and high availability
When copying the file(s), the modification date is changed
Hi, I have a shared drive on my server (Win 2019) that I share among other users. Recently, there was a problem that as soon as users started copying and pasting files to the server, the modification date of the pasted file changed to the current…
Windows Server High availability Clustering and high availability
Slow Live Migration for Linux (Debian 12) VMs Compared to Windows VMs on Hyper-V Cluster
Problem Description We have a 2-node Windows Server 2022 Hyper-V failover cluster. Both nodes host highly available (HA) VMs, including a Debian 12 VM (48GB RAM) and a Windows Server 2022 VM (4GB RAM). While failover works perfectly for both VMs,…
Windows Server High availability Clustering and high availability
Failover Hyper-V Cluster errors
Setup and Infrastructure I have three Microsoft Server 2019 based Failover Cluster having three nodes HP-SRV1, HP-SRV2 and HP-SRV3 This infrastructure was created 4 Years ago from past few month we are getting error and facing "Live Migration…
Windows Server High availability Clustering and high availability
What causes the error message below?
"DTC security settings and firewall settings should be fixed in order to complete the transactions propagation test."
Windows Server High availability Clustering and high availability
E drive is running out of diskspace
I have a Windows 2022 Domain Controller server for which the E drive is running out of diskspace. Via the Treesize program I can see that it is the System Volume Information folder that is filling up with these strange files that take up about 7,2GB each…
Windows Server High availability Clustering and high availability
Server manager and disk manager on Windows server 2022 core
Hello, I'm trying to open disk managment on remote server manager running windows server 2022 Standard core, but I get the following message : "You don't have access privilege to logical disk manager on x.x.x.x" The remote server was added to…
Windows Server High availability Clustering and high availability
Windows Server 2019 Standard - Why does VSS creation call get hung when trying to initiate it within the Windows GUI (under Configure Shadow Copies)?
I have been trying to Configure Shadow Copies and use the "Create Now" option. However, when I select "Configure Shadow Copies," nothing happens. I also attempted to access Shadow Copies through the Drive properties, but it just keeps…