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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12
votes
5answers
43k views

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 ...
8
votes
2answers
6k views

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 ...
0
votes
2answers
4k 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 ...
10
votes
7answers
68k views

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). ...
3
votes
2answers
2k views

Set up DPM to use hardware VSS Provider with EMC Clariion SAN

We recently purchased an EMC Clariion AX4 SAN and we're using it to provide storage for our Hyper-V virtual machines. I've already got the servers registered with it and configured the failover ...
2
votes
4answers
12k views

linux + create simple watch dog process in shell script

I need to create watch dog process (will run in linux version 5.x) that look all time on /etc/cluster.cf file And if the process matches the string: machineA_is_active in the cluster.cf file Then ...
4
votes
1answer
160 views

What may increase the latency 3-4 times for SQL FCI the database?

We have SQL Server Basic Availability Groups (BAG) configured to run an SQL database running over local Intel SSD drive. I was asked to move a database to SQL Server Failover Cluster Instance (FCI) to ...
2
votes
1answer
231 views

Creating a new Infrastructure for my company using Windows Server and FreeNas

I was hired to create software but now also stuck with governing all of the IT work. The company uses a Windows 10 Home machine as a file server for 13 users. I need to plan for up to 50 employees. ...
1
vote
2answers
13k 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 ...
1
vote
1answer
5k views

Quorum Disk size for Windows 2008R2 failover

I am setting up a two node failover cluster for SQL Server 2008 R2 on Windows Server 2008 R2. Microsoft recommends minimum 512MB size LUN for the quorum disk and don't have a recommendation for the ...
1
vote
1answer
185 views

Which technology allows shared storage for clusters with preferred local reads and writes?

I have two or three somewhat older servers of type HP ProLiant DL380 G6/7 with only x * 1 GBit Ethernet, but quite some CPU power, RAM and capable of a fair amount of local storage. I'm interested in ...
0
votes
2answers
2k views

File Sharing using Hyper-V Shared VHDX

Is file sharing by simply using Hyper-V Shared VHDX on CSV attached to two VMs possible ? I'm testing SVHDX in my environment and I can't get it working. We have setup failover cluster and CSV backed ...