Daniël Tromp

Search & Resolve

[PowerShell] Getting started with Windows PowerShell Desired State Configuration – Part 2 – Pull Server

After the introduction with DSC I got exited of possibilities, so what’s next? Setting up a PS DSC Pull Server is the next step. I had some issues with the Pull Server installation on Windows 2008 R2, so I try to keep it simple and deployed a Windows 2012 R2 server. Maybe I will try […]

[PowerShell] Getting started with Windows PowerShell Desired State Configuration – Part 1

I recently started with PowerShell DSC, this post is to get you up to speed. Last year Microsoft announced Windows PowerShell Desired State Configuration (DSC) as part of PowerShell v4 during TechEd North America. DSC is a very cool new feature that lets administrators write a declarative “script” that describes what a computer should look […]

BYOD for Dummies by VMware

A good read: “BYOD for Dummies” edition by VMware, without the VMware mantra. Online resource: BYOD for Dummies Or offline: [wpdm_file id=7]

[PowerCLI] Show ESX cluster CPU/Mem averages

As a follow-up on my earlier [PowerCLI] Report ESX vCPU vs pCPU & Memory ratio script, I created a script that only shows average CPU and Memory usages per Cluster. This brief cluster overview is (for example) usable for management reporting. See [PowerCLI] Report ESX vCPU vs pCPU & Memory ratio for more information about […]

[PowerShell] Freeware script editor comparison

Having a PowerShell script editor that helps you in with your task at hand improves your speed and quality enormously. This is for PowerShell beginners and even for expert users. I myself started with MS Notepad as my PowerShell editor, it’s fast but there are zero features that help you. Soon I switched over to […]

[PowerCLI] Change DefaultPSP and SATP/PSP for every lun on every host

Changing the default Path Selection Policy (PSP) on every host can be time consuming challenge, after that you also need to change the PSP on every lun on every host. In the past you needed to SSH login to every host and change the settings “manually”, but there is also a PowerCLI way to do […]

[PowerCLI] Report ESX vCPU vs pCPU & Memory ratio

Here is a script that will show you 3 things per host: 1. vCPU:pCPU ratio, 2. Host Memory Granted, 3. Host Memory Used. It will count all the vCPUs on a host and the (physical) pCPUs, the vCPU differed by pCPU is the ratio. The vCPU:pCPU should in my opinion be: High CPU load environment […]

[PowerCLI] Check Ballooning vCenter wide (quick)

I used the Check Ballooning script allot in the pasted, the script can be found on many blogs and sites. I simply adjusted the script so it would also show Compressed Memory. Why add “Compressed Memory”?, it gives a extra dimension to the ballooning an swapped values. Compressed Memory tells you how memory intensive the […]

Undeduplicatable/uncompressible data

Testing anything that uses deduplication and/or compression? Use data that is entirely unique. You can create unique data with the /dev/random (or urandom) but it’s terribly slow if you need allot of data, 10-20MB/s(per thread). OpenSSL has a faster and better way to create random data, using OpenSSL will improve the speed up to 120MB/s(per […]

[PowerShell] AD enable UNIX Attributes

When using Active Directory and UNIX Attributes (User/Group Unique Identifiers) the first thing you need is the Identity Management for UNIX Components. Now you are ready to start using UNIX Attributes. Adding UNIX Attributes to every user and group in your domain, using PowerShell. Get every user that already has UNIX Attributes enabled, only change […]