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Questions tagged [failovercluster]

A failover cluster is a group of servers that work together to maintain high availability of applications and services

A failover cluster is a group of independent computers that work together to increase the availability and scalability of clustered roles
The clustered servers (called nodes) are connected by physical cables and by software. If one or more of the cluster nodes fail, other nodes begin to provide service (a process known as failover). In addition, the clustered roles are proactively monitored to verify that they are working properly. If they are not working, they are restarted or moved to another node.

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server 2016 active directory and hyper-v same server

I am getting ready to move my production environment from server 2012 R2 to server 2016 I want to do a clean install and in doing some inventory really only have two server I can use for staging, I want to be able to do a clean install. I have read…
Anthony Fornito
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How to build a high availability Postfix system?

I'm needing to set up a remote mirror for a postfix server (where the content of both mail servers should be the same at any time). The idea is that if the main server comes down at some point the mirror server will take its place, manage the new…
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VMXNET3 receive buffer sizing and memory usage

Background We had an incident where a Windows failover cluster suffered an interruption. A post-mortem showed that the node was "removed" as described in this article. We've only recently migrated this cluster fully into our VMware environment, and…
briantist
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Why are my HyperV VM's randomly losing connectivity?

I have a strange intermittent connectivity problem happening about once every two weeks. First my configuration: I am running a HyperV failover cluster with two physical hosts (node01 and node02). The hosts are both running Windows Server 2008 R2…
Mike
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Is there any way to prevent Storage Spaces Direct from automatically adding disks?

Got a problem here on a 2016 Windows Server Failover Cluster (WSFC) hosting an SQL Failover Cluster Instance (FCI) employing Storage Spaces Direct (S2D). On each server, after successful initial creation, S2D automatically added an otherwise unused…
Karsten Köpnick
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How Does Failover Clustering Work in Windows 2008 R2?

I am trying to learn how the failover clustering features works with Windows 2008 R2 as I am going to be using as part of SQL Server 2012 always on. I have been able to find information on how to set it up, and what it does. However, I am having…
Kyle Brandt
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How to setup IIS on Failover Cluster with Shared Data

I'm trying to setup a highly available IIS for public facing websites, and I'm having a hard time finding information on the best and most secure method of setting up the permissions, correctly configuring IIS, and verifying that my setup plan is…
Justin M
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Internal storage as HA failover cluster storage pool ?

I have 2 HyperV server (2012 R2) nodes with shared ISCSI storage (ubuntu 16.04) in a Failover Cluster. I want to make that 3 servers (windows server 2016 and/or 2012r2) each with 2 partitions, one for the system and one as storage. How would I…
Carobell
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Miserable performance of Hyper-V storage on CSV

I recently setup a new environment consisting of: - QSAN Storage with 10Gib network - Mellanox switches 10Gib - 4 x Physical nodes connect to LAN and SAN 10Gib The physical hosts are connected using MPIO to the SAN storage, performance tests were…
inzanez
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Clustered File Server on Windows 2012 With Local Storage

So I have a SQL Always-On group that requires a file share witness. I want that file share witness to be redundant and since I have no other need for a file server on this network, I'd like to do it with the least number of servers. I thought I'd…
stackonfire
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Two-Node Server 2012 R2 Hyper-V Cluster: Is it possible use local physical disks in the cluster?

Looking at the following Clustered Shared Spaces TechNet article, and it looks like this only applies to hosts sharing a JBOD enclosure by way of external SAS backplane. However, each host in the two-node cluster has an identical amount of SAS 15K…
gravyface
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DRBD for HA Server in Small Office Questions

Backround: We are in need of a HA server in a small office environment and are looking at DRBD to provide it. We only have about 100GB that needs to be on the HA server and server load will be extremely low. The data will probably increase about…
Damon
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High availability virtual machines

I've been reading a lot about high availability virtualization, either via Hyper-V or VMWare. In that context, essentially high availability means that the VM is hosted by a cluster of physical servers (nodes), so if one of the physical servers…
Jeremy
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unable to destroy windows 2008 r2 failover cluster after SAN rebuild

I created a windows 2008 r2 failover cluster for a sql 2008 active/passive cluster. This two node cluster was using a SAN device for a quorum disk resource as well as MSDTC resource. Well....I decided to reconfigure the SAN device, but I didn't…
Zack
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Storage Space Direct : SMB error

So we've got this 4-node Storage Space Direct (S2D) cluster, working for more than 1.5 year without any major issue. The OS is Windows Server 2016. Firewall down for all profiles No antivirus installed, Windows Defender OFF Active Directory…
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