Unexpected Large Page File Troubleshooting

This week one of my colleagues has been performing updates on our hypervisor hosts including those running Hyper-V. During this work we received alerts from our monitoring system to indicate two of the hosts had essentially run out of disk space, obviously a little worrying. We stopped the update process while troubleshooting was carried out … Read more

Get Windows NTFS Block Size

Windows systems write blocks of data to underlying storage – the size of these blocks is given various terms, for example – Block size Allocation unit Cluster size The important thing to consider is that this unit of allocation can have an impact on the performance of systems. By default Windows will format a disk … Read more

Trend Micro OfficeScan IIS 503.2 Error Work Around

One of my Trend Micro OfficeScan servers recently started to experience problems resulting in IIS 503.2 error messages being displayed. This was rather poor timing as I was actually in the process of migrating OfficeScan clients to this new server running version 12 or XG as they are calling it. After some work with Trend … Read more

Set Cluster Log Size and Verbosity in Microsoft Server 2008 R2

Recently a critical cluster system had a bit of a hiccup wherein the SQL resource failed between nodes a few times and then gave up. Most of my clusters run on Microsoft Server 2012 R2 so I tend to use PowerShell for everything, in this case the cluster is an older one running Server 2008 … Read more

Windows Server Core Expand Volume

I am trying to run as many of my Windows server home lab virtual machines (VM) as Core installs. This reduces the resource requirement for each VM in terms of drive space, memory and CPU – obviously a good thing in any environment. It also forces me to learn more ways of dealing with situations, … Read more

Hyper-V Enhanced Session Mode

Hyper-V Enhanced Session Mode (ESM) is a configurable option which enhances the Hyper-V virtual machine console providing options and features similar to an RDP client session. Configuring ESM can be achieved either via the Hyper-V Manager GUI or through PowerShell – obviously if you have many hosts to configure PowerShell is the way to go. Some … Read more

PowerShell Direct over Hyper-V VMBus

Today I learnt a little about an awesome feature which I think isn’t that well known – or at least when I speak to colleagues past and present they are not familiar with it. The feature in question is leveraging PowerShell on a Hyper-V host down the VMBus to a guest virtual machine. What exactly … Read more

Microsoft Cluster Shared Volume Caching

I recently learned of a feature which had previously been unknown to me – Microsoft Cluster Shared Volume (CSV) caching. I use both Hyper-V and VMware at work though typically I focus on VMware as that is where the majority of our environment runs. I am deploying more systems to Hyper-V every day and the … Read more

PowerShell Cryptographic Hash Checker

I decided to build a little cryptographic hash checker in PowerShell leveraging some built-in cmdlets and other functions. While there are lots of tools that already do this, many with very nice GUIs I decided it would be fun to build one of my own. The newly made cmdlet is very simple. You select what cryptographic … Read more

HP 3PAR StoreServ PowerShell Toolkit Installation

HP recently released a PowerShell toolkit for the 3PAR StoreServ SAN. This is great news if you are familiar with the Microsoft PowerShell environment and wish to leverage it to manage your 3PAR arrays. Today I’m going to deploy the 3PAR PowerShell toolkit and demonstrate some of the commands that can be leveraged.   Download … Read more