Questions tagged [failovercluster]
A failover cluster is a group of servers that work together to maintain high availability of applications and services
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window server 2012 r2 - failover cluster resource vs cluster disk
I create a 2 node WSFC and added a cluster disk to it.
I have not installed any clustered application and roles yet.
I am playing around with the cluster resource (such as moving it around).
On the ...
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Fail over of iSCSI attached storage
We have a Windows 2012 R2 Hyper-V VM that has multiple drives attached via iSCSI directly to a SAN. These drives are accessed through multiple other 2012 R2 VM's using UNC paths to add and fetch files ...
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3 node cluster with crossover cables
We have a windows failover cluster running Windows 2012 R2 for Hyper-V. Our storage is using Storage Spaces with a SAS3 JBOD. As such, we see IO transfers hitting 2800 MBps. Our networking is still ...
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How do you put a cluster disk in maintenance mode in Windows Server 2012 R2?
Background: I have created a test 2-node Server 2012 R2 cluster, with an iSCSI cluster disk. I want to format a new partition on the disk. When I try to format the new partition, it says the disk must ...
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Cluster Shared Volume 'no access' for a minute
We have a Failover Cluster with two nodes and a NetApp E Series Storage. The connection is iSCSI.
All Windows updates are installed to the hosts, the storage controllers firmwares are up to date.
...
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1
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Bridging host-only subnet on multiple Dom0s
I currently have two XEN-Hosts running a set of virtual machines. These machines can communicate with each other via a host-only network. I want to be able to move virtual machines between both ...
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1
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Maximum Timer for Drain Roles?
This is one of those weird questions I would expect to be documented (Especially on Tech Net), but I honestly haven't found an actual explanation. As of Server 2012 R2 you can set your cluster nodes ...
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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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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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3
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Exchange 2013 DAG Cluster Unable to add second sever
I have two servers (EXCH1 and EXCH2) running Exchange Server 2013 Standard, and a third file server that is a DAG Witness.
The first server is a Windows Server 2012 R2 Standard machine and the ...
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1
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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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How does CSV cache behave under memory load?
We're looking at using Microsoft's CSV cache feature in our new Hyper-V 2012 R2 clusters:
It's enabled by default, with 512MB allocated to each CSV.
The maximum memory that can be assigned is 80%.
...
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1
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Get witness disk current vote via PowerShell
I am trying to verify functionality of dynamic quorum in a new failover cluster setup.
Is there a command in PowerShell that I can use to see the current vote for the witness disk? I have been ...
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1
answer
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I do not see disks while building a Scale-Out File Server on Windows Server 2012 R2
Following are my environment details
I have created 2 virtual machines in Azure. node 01 and node 02
Both machines are using windows server 2012 R2
Attached disks for node 01 and node 02
Added node ...
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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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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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1
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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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1
answer
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Windows Server 2012 Failover DHCP
I've been tasked with migrating from our current 50/50 scope resilient DHCP servers to new hot standby failover DHCP in Server 2012 R2.
Built a test bed with the two DHCP server VMs and created a ...
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1
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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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0
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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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Multiple Nics, multiple default gateways on a Server 2012R2 cluster
This is really just a question about best practices as there seems to be a little confusion. The physical hosts of our Hyper-V cluster have 4 Nic interfaces relating to the 4 subnets.
Now, when ...
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2
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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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Why do I get BPA error "Servers in Failover Clusters Must Have a Hyper-V Replica Broker Configured"?
I configured a Hyper-V Failover Cluster with two nodes and one domain controller. Cluster-Aware Updating is enabled.
The BPA shows the following error:
To Participate in Replication, Servers in ...
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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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1
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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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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 ...
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Creating a failover cluster of 2 VMs
I'm trying to create a cluster of 2 VMs on hyper v. The 2 VMs and the host server all running on win 2008 r2.
When attempting to test validation for the failover cluster I'm getting an error of "disk ...
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3
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Windows failover cluster with two quorum disk witnesses?
To avoid a single point of failure on the backend SAN system, can I place one quorum witness disk on each site and have the cluster use both?
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Fault Tolerance with Windows Server Failover Clusters?
I've attempted to read numerous articles online about this and believe I'm "seeing the light", but I'd like to have it confirmed.
Do Windows Server Failover Clusters offer a fault-tolerant feature ...
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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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Removed cluster disk that wouldn't come online, now it wants to be formatted. Can I recover the data?
I inherited a failover cluster hosting several VMs and some storage volumes. It uses a fibre-channel SAN for storage. I updated firmware on the SAN controllers recently and when it came back up one of ...
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How to set foreign-domain alias for a Failover Cluster client access point?
I have a migration scenario with a Failover Cluster file service where I would like to add the alias for the old file server name pointing to the cluster service client access point name.
Using ...
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1
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Adding a share in a Failover Cluster with quotas enabled takes 10 minutes
I have File Service cluster where one of the file server resources is hosting ~50,000 user home directories. The home directories do have a quota template assigned through the FSRM.
When trying to ...
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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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1
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Failing over to mirror instance when not using a witness server
I have a set up where I have two SQL servers set up for failover mirroring to two other SQL servers.
I am not using a witness server.
I had previously used a witness server and that of course would ...
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0
answers
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Why new two node cluster not behaving right?
I’m trying to create cluster of two nodes, but it seems to behave a little strange following this guide, but I was unable to do, for example:
[root@afnA ~]# pcs property set stonith-enabled=false
...
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1
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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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Hyper-V - Upgrading a 3 node 2008R2 cluster to 2012R2
I'm just after a some advice/tips on upgrading our 3 node Hyper-V cluster from 2008R2 to 2012R2.
I have 3 x Dell r710s running Server 2008R2DC. These are clustered and running about 15 VMs (5 on each ...
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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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1
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Windows Failover Cluster - Trying to create MSDTC Role - AD Permissions issues?
I normally hang out in the DBA Exchange but I'm coming to ServerFault this time with a Clustering issue.
I am trying to create a MSDTC role for my Windows 2012 R2 Cluster.
The IP address and disk ...
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2
answers
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SAN: How to determine amount of LUN and CSV
We have inherited Hyper-V environment (2008 R2) with SAN storage (HP4500 hardware). Two hosts and two SAN's for redundancy. Whilst I understand virtual machines well, I guess, my knowledge of storage ...
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Server 2012 Cluster - Second Node Can't Ping Items
I've got a server 2012 SQL Cluster and all of the processes failover and run properly. The only odd behavior is that when I fail over to the secondary node, there are certain items on one NIC that can'...
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Converting a Windows Server 2012 R2 Scale-Out File Server Back To Regular File Server. Is It Possible?
Well... I messed up. I didn't do enough research and just checked out the headlines then jump head first into the new Scale-Out File Server that Windows Server 2012 R2 brings to the table. At first ...
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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 ...
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1
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Windows Failover Cluster - High Availability
I set up a Windows Failover Cluster on WS2012.
Is there a way to replicate the cluster on another server to have a sort of high availability of the cluster itself?
My concern is about the scenario ...
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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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Windows Cluster An error was encountered while determining shared storage
Our SAN manager has added a new disk for our cluster. this is a new 6TB disk that will be used for backup and will be part of a file share. I have put the disk online, initialized it and assigned the ...
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1
answer
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Hyper-V Failover-Cluster: How does the Cluster know the difference between the Management and the Cluster Network?
Reading the Network Recommendations for a Hyper-V Cluster in Windows Server 2012, I am left with some unanswered questions.
It's recommended to have a management network and a cluster network.
The ...
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1
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Hyper-V Server Deployment - adapter configuration
I'm sure this question will have been asked somewhere before. In fact I'm sure I've read about it before too, but I can find any resources to help me along my way.
What I'm trying to do is deploy a ...
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What hotfixes/updates does a new 2012 R2 Hyper-V server need?
I'm building several new 2012 r2 Hyper-V servers. One thing that I've read over and over again is that there are A LOT of hotfixes that i need to install on top of the regular OS updates Microsoft ...