Speeding Up Failover Tips-n-Tricks

From time-to-time people ask me for suggestions on what tweaks they can do to make Windows server Failover Cluster failover faster. In this blog I’ll discuss a few tips-n-tricks. Disable NetBIOS over TCP/IP – Unless you need legacy OS compatibility, NetBIOS is doing you nothing but slow you down.  You want to disable NetBIOS in a… Read more

Hyper-converged with Windows Server 2016

One of the big hot features in Windows Server 2016 which has me really excited is Storage Spaces Direct (S2D).  With S2D you will be able to create a hyper-converged private cloud.  A hyper-converged infrastructure (HCI) consolidates compute and storage into a common set of servers.  Leveraging internal storage which is replicated, you can create… Read more

Planning Failover Cluster Node Sizing

In this blog I will discuss considerations on planning the number of nodes in a Windows Server Failover Cluster. Starting with Windows Server 2012, Failover Clustering can support to up 64-nodes in a single cluster making it industry leading in scale for a private cloud.  While this is exciting, the reality is that it is… Read more

Event ID 5120 in System Event Log

When conducting backups of a Windows Server 2012 or later Failover Cluster using Cluster Shared Volumes (CSV), you may encounter the following event in the System event log: Log Name:  System Source:  Microsoft-Windows-FailoverClustering Event ID:  5120 Task Category: Cluster Shared Volume Level:  Error Description:  Cluster Shared Volume ‘VolumeName’ (‘ResourceName’) is no longer available on this… Read more

How to Properly Shutdown a Failover Cluster or a Node

This blog will discuss the proper process for shutting down an individual node in a Windows Server 2012 R2 Failover Cluster or the entire cluster with all the nodes.  Note:  While the steps outlined will be specific to Windows Server 2012 R2, the process applies to a cluster of any OS version. Shutting Down a… Read more

How to Enable CSV Cache

Cluster Shared Volumes (CSV) Cache is a feature which allows you to allocate system memory (RAM) as a write-through cache.  The CSV Cache provides caching of read-only unbuffered I/O.  This can improve performance for applications such as Hyper-V, which conducts unbuffered I/O when accessing a VHD or VHDX file.  Unbuffered I/O’s are operations which are not cached by… Read more

How to Create a Cluster in a Restrictive Active Directory Environment

In Windows Server 2012 there have been several enhancements to how Windows Server Failover Clusters integrate with the Active Directory.  In this blog I am going to discuss some of the changes to help enable creating Failover Clusters in restrictive Active Directory environments where permissions to create computer objects is delegated to specific organizational units (OU)…. Read more