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

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Building Windows Failover clusters, re-use quorum drives?

I'm building a series of virtual failover clusters, 2 for SQL, and 1 for BizTalk. Being that it is a Proof of concept virtual setup with no real expectations around high availability, is it possible ...
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111 views

DRBD with manual failover

Looking at using DRBD or a clustered files system to help with up-time when downtime strikes in a small business environment. We currently use a server box for a file server using Linux and samba, ...
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321 views

Windows Sever 2012 failover clustering: difference in max number of virtual and physical nodes

As far as I know there is a following limitation for maximum number of nodes in Windows Server 2012 failover clustering: 4,000 VM nodes or 64 physical nodes. Apart from apparent difficulties / ...
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519 views

Windows 2008R2 two node failover cluster creation fails

We have just installed two Windows 2008R2 Enterprise machines with identical hardware. When running the cluster validation everything is ok. When creating the cluster it fails with the following ...
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4answers
3k views

What are the ways to build a failover cluster?

I have a task where I need to build a failover cluster in two cases: first with servers on Red Hat Enterprise 5.1 and second with SUSE Linux Enterprise 11 SP1. Both cases have SAN. I know there are ...
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4k views

hyper-v cluster behavior when losing network connectivity

Setup: (rather new) Hyper-V R2 cluster with 2 nodes (in failover configuration). Fysical host OS: Windows Server 2008. About eight VM's (mixed: Windows Server 2008 and Linux) Yesterday we had a ...
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488 views

Failover clusters of WPAR with HACMP in AIX 6.1?

Is it possible to create a failover cluster using Workload Partitions (wpar) in AIX 6.1? I want to create a two node cluster such that each of the nodes is a wpar and in event of a software failure ...
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23 views

Should I continue to use MSDTC in my new virtual environment for MSSQL?

In the past I have used a two node cluster setup. All the services (SQL, File Server, App Server, DTC) were passed back and forth within the cluster as normal. Now I take a different approach. I ...
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72 views

Use a shared vhdx as shared drive

I have a Windows Cluster made up of two nodes connected via SAS to a storage array. I have two virtual machines configured with their hard disks (vhdx) on the shared storage. They are up and running ...
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406 views

pcs status error httpd_monitor_5000 on server 'not running' (7):

Error Message Failed actions: httpd_monitor_5000 on abc-zabserver-b 'not running' (7): call=65, status=complete, last-rc-change='Wed Jul 15 21:44:43 2015', queued=0ms, exec=8ms pcs status ...
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880 views

Un-cluster storage added to Windows Failover Cluster Manager

Forgive me if I'm mixing up terminology, I'm a DBA and trying to see if I can un-do my error here. Background: I was adding a 3rd DR site node to a Windows Server Failover Cluster to utilize AlwaysOn ...
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435 views

Hyper-V and Windows Failover Cluster Manager - View available resources per node?

I have a Hyper-V host with Failover Cluster Manager and 6 VM nodes (hosts). How can I see how much memory and CPU is allocated per node? I want to know what my available resources are to create more ...
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734 views

How to run validate cluster test without taking cluster offline?

I'm trying to run "Validate a Cluster" wizard but when I selected Run all test it gave a warning that running storage test will result in role failure. What test can I run in Run only tests I select ...
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285 views

What happens when Core Cluster Group is failed over to another node? Will it take the whole cluster down? Single point of failure?

http://bit.ly/1lKJFIa "Cluster group" fail-over will cause cluster go offline. Really? Single point of failure? Am I missing something? What happens when Core Cluster resources (Cluster Group) are ...
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247 views

How can I quickly relocate an entire virtual machine to a new location?

We are using Hyper-V in a clustered Server 2008 R2 environment with 3 identical hosts. Virtual machines are stored on cluster shared volumes (CSV's) on a SAN backend connected via iSCSI. What is the ...
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491 views

Change network used by cluster traffic types with powershell

I was reading this technet blog post about Windows HA cluster traffic types. It explains how to change the metrics of cluster traffic types with the cmdlets, but for settings like “Allow cluster ...
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227 views

failover cluster file replication

I have a Windows 2008 R2 failover cluster server. I am going to move one of our window services onto this new server. The service writes some trace information to a log file on the local harddrive. ...
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60 views

where to put core services in two-node cluster

I'm currently configuring two-node HA cluster based on CentOS with DRBD. Most services are packed in virtual machines with migration available. I have not made decision where to put some core ...
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533 views

Windows failover cluster - virtual node with multiple Client Access Names

I recently encountered a customer environment in which they had failover cluster where one of the virtual nodes had more than one 'Client Access Name' (i.e. more than one IP address and DNS name for ...
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1k views

Cluster Aware Updating set up - VirtualComputerObjectName ignored

I am trying to set up Cluster Aware Updating, but it always fails with the following error: Add-CauClusterRole : Unable to create the CAU clustered role because a Network Name resource could not be ...
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1k views

Failover Cluster Migration Wizard (SQL Install Portion)

Have 5 SQL 2005 to 2008 R2 clustered instances. I've setup a new cluster to prepare to use the cluster migration wizard. As I understand it you have to install SQL before running the cluster migration ...
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82 views

Load Balancing in Hyper-V VMs [closed]

Can I do NLB on VMs using two physical Hyper-V Servers? Server 1 - Hyper-V Dual Xeon - 16 GB RAM VM1 = Webserver VM2 = SQL Server VM3 = Exchange Server Server 2 - Hyper-V Dual Xeon - 16 GB RAM ...
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71 views

Windows Server 2008 Data Centre - Failover cluster : un-cluster

We have a pair of powerful servers configured for fail-over, using windows servers built in fail-over clustering and hyper-V sharing san storage. The configuration is slightly jagged as there is a ...
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109 views

Commands to manage services and applications in a failover cluster

There is a pretty decent suite of Powershell commandlets for managing Microsoft Failover Clusters, including commands for starting and stopping nodes. However, I am interested in the equivalent ...
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2k views

Unable to connect to failover cluster

I have a 2 node failover cluster running on Windows 2008 R2. The cluster is functioning and I can failover services between the two nodes. All was working fine last week but now nothing can connect ...
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382 views

Is it possible to use iscsi to create a red hat cluster?

I have a netapp fast 2xxx with iscsi support, with 2 san switches. Is it possible to use one iscsi lun with cluster purposes? The idea is to create a clustered service which needs storage, the ...
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Clustered MSDTC - No transaction is active

Hi I Currently have two clusters (W2K8R2) with SQL 2K8R2, both with MSDTC cluster service enabled. I've configured the MSDTC with all checkboxes, and Incoming Caller Authentication Required and NT ...
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120 views

windows application cluster

I have a windows service that is written in-house. This windows service services clients on TCP port X. I want to run it on more than one Windows server. I want the client apps to connect to a single ...
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130 views

SQL Server 2008 setup issue

I am setting up SQL Server 2008 fail over cluster on Windows Server 2008 Enterprise. I met with the following issue during setup process. Here is detailed message, any ideas what is wrong? The ...
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793 views

How to start/configure JBoss clustering

I am totally new to JBoss. Basically i am needed to setup a JBoss clustering environment on windows. Meaning, JBossA sits on machine A and JBossB sits on machine B. So when JBossA fails, it will ...
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41 views

Clustering service Configuration help

When setting up Windows Cluster, should "clustering service" run as a "domain account" or "Local System" account?
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12 views

SQL Failover Cluster Clients not updating DNS

I have a multi-subnet SQL Server 2012 failover cluster running on 2 Windows 2012 R2 nodes. The cluster is located on 192.168.1.10 when on NODE A and 192.168.5.10 when running on NODE B. When I look at ...
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22 views

failover cluster creation Error

I am creating a fail over cluster, but doing so i get the error "An error occurred while creating the cluster. An error occurred creating cluster 'testCluster'. This operation returned because the ...
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57 views

How to use Docker with HAProxy+Keepalived?

I want to practise in creation of high-available web-application using multiple Docker containers on one machine. I launch several web-servers within Docker containers. Say, three servers rest1, ...
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20 views

Server 2012 R2 - Sharing 'cluster shared volume' .VHDX hard drives between two VMs, are they supposed to not live update? [duplicate]

I have a .VHDX volume that's a cluster shared volume in a Server 2012 R2 failover cluster. I'm able to share the hard drive between two VMs. If I create a folder on VM2, it doesn't show in VM1 in the ...
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18 views

Can't see fileshares in Windows Failover Cluster Interface

I am unable to see Fileshares I've added to my Windows Failover Cluster And I get this error But I can see them via powershell Get-SmbShare -ScopeName my_server_role | Select * I am a domain ...
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35 views

Windows Server 2012 R2 Hyper-V - High Availability (Clustering): Connect servers to storage using FC: switch or direct attach?

My scenario: I have a DS3400 DISK SYSTEM DUAL CONTROLLER FIBRE CHANNEL storage equipped with two controllers each equipped with two 4-GBPS FC ports, for a total of four FC ports. Then I have four ...
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42 views

Proxmox HA Cluster tiebreaker node

I want to setup a Proxmox HA Cluster using a quorum for reducing the risk for a split-brain. So I need 3 nodes. Is it possible for one of the nodes to just act as a tiebreaker node without running any ...
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25 views

MS SQL - HA & load balancing best solution for servers at different geo-location

Customers has App server (MS Server 2012) and Storage server (MS SQL 2012), with several hundred clients accessing server app via VPN. Now they want to have a high-availability and also load ...
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42 views

Failover Cluster DFS issue

I have a Windows 2008 R2 Failover Cluster. I have a Windows 2012 R2 Failover Cluster. I have been able to use the Copy Cluster Role to migrate 70 VM’s and the DHCP service from the Windows 2008R2 ...
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36 views

What exactly is the “client” in Failover Cluster Manager in Hyper-V environment?

Recently, in my Hyper-V environment, we broke out the ip addresses used on the hosts into separate subnets, some of which are non-routable. Now I am seeing a "target name resolution" error in Server ...
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548 views

Could not get domain controller name from machine

While validating a Failover Cluster over two member servers I get the following two errors: Connectivity to a writable domain controller from node SQL2.domain.com could not be determined because of ...
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23 views

New SAN space presented cause issues with Win 2008r2 cluster (wont reboot and disk manger wont load)

I have an issue where I have a 2 node Win 2008 r2 cluster with SAN attached storage. Existing storage is on an older array but we are being migrated to a newer one. When the storage team "Zones" new ...
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1answer
72 views

Best Way to Restart 2 Node SQL Cluster To Perform Windows Updates?

So I have a 2 node MS SQL Server cluster, using AlwaysOn, on Windows 2012 r2. SQL1 is the primary. SQL2 is the secondary. I want to restart both servers today to perform windows updates which will ...
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48 views

Can Failover Clustering in WIndows be set-up on Google Compute?

My understanding is that a Windows Failover Cluster node must be multihomed and that GCE Instances cannot be multihomed. Is this the case, please?
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158 views

Clustered SAN volumes not showing up in Windows Explorer

Occasionally my drives will not show in Windows Explorer even though they appear online (Reserved) and mapped to a drive letter in Disk Management. I'm not sure what makes them come back but right now ...
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110 views

Windows Failover Cluster Generic Script

I have two windows server 2012 R2 machines set-up in a cluster. Everything seems fine with regular services but when I try to create a generic script resource I encounter the following vague error: ...
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34 views

What is Best Practice for migrating SQL 2012 system databases to failover cluster?

What is the best practice for copying system databases when migrating from SQL Server 2012 (no SP) to 2012 SP2 in a Failover Cluster? Just backup and restore? Or, script out and script in?
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108 views

Failover Forward IP Packets with port from one server to another

Basically none of the solutions online have worked so far. Here's my setup: To simplify things, we're gonna assume it's a VNC server, My setup is a fully integrated OwnCloud and Ulteo. I've ...
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346 views

2012 R2 Failover Cluster & Microsoft CSV Shadow Copy Provider

I am hoping that someone can help me out here. I have a 2 node 2012 R2 Hyper-V Failover Cluster, and I am trying to get our Veeam backups to work on this Cluster. On node 1 the backups work fine ...