Why you should replicate your vCenter Appliance

In the old days of virtualization a vCenter used to be a nice-to-have commodity. But these times are long gone (at least from an IT point of view). In today’s datacenter many services and applications rely heavily on vCenter. Some of the most common use-cases are VDI-environments, cluster balancing mechanisms like DRS or Storage-DRS and even backup software needs vCenter.

The last one is a crucial point. It’s good to have your vCenter Server Appliance (VCSA) backed up regularly and most of you and your customers will likely do so. But think of what would happen if you’d loose your vCenter for like 10 minutes or even an hour.

It’s not just important to have a backup of it – you also need to return to operation fast and minimize your Recovery-Time-Objective (RTO). „Why you should replicate your vCenter Appliance“ weiterlesen

Konsistente Backups mit Lotus Domino und Veeam Backup

Lotus Domino ist bekanntermaßen nicht VSS fähig, somit kann diese Funktionalität auch nicht von Veeam Backup genutzt werden, um konsistente Snapshots zu erzeugen.

Die hier beschriebene Methode basiert im Wesentlichen auf einem von Andreas Neufert beschriebenen Verfahren. Dabei werden unmittelbar vor Erzeugung des VM-Snapshots alle Client-Sessions getrennt und der Cache geleert.

„Konsistente Backups mit Lotus Domino und Veeam Backup“ weiterlesen

VMware vExpert 2017 – Second Half

A nice surprice at breakfast

Each year VMware selects people who were particularly engaged in the community and awards the title vExpert to these bloggers and evangelists.

Earlier that year some friends and colleagues encouraged me to apply for the VMware vExpert program. Although I’ve been blogging for a couple of years now about virtualization and related IT stuff, I honestly did not expect to fit into the frame. But it was worth trying, so I filled in the application form.

After not hearing anything until early August and not finding my name on the official list, I’ve lost the issue out of sight. Nevermind – better luck next year.

Last week I had a new follower vExpert on Twitter, which isn’t too unusual because I used to follow them for a while too. Nothing suspicious.

Today at breakfast time I’ve received a couple of invitation mails by Corey Romero, who’s part of VMware Social Media and Community Team. Could it be an error? My name wasn’t on the list. So I’ve checked the official list again and actually found my name on it. 🙂

I’m both surprised and honored!

VMware you made my day

I would like to thank all people who encouraged me to apply and who gave me feedback on my blog (without feedback you can’t be sure if anybody is reading at all).

My special thanks go out to Michael Melter from idicos GmbH and Jens Söldner from Söldner Consult GmbH, who both convinced me to apply for vExpert.

And last but not least I would like to thank my wife Ruth for being my rock in rough seas. I apologise for getting lost in the lab so often and spending many hours in front of the terminal.

Thank you so much!

vSAN 6.6 Setup Demo

Building a POC vSAN Lab

Building a vSAN cluster from scratch has never been easier. Recently I had the opportunity to get my hands on 3 fine Lenovo x3650 M5 servers with local SAS drives and flash.


Lenovo x3650 M5, Dual Xeon Processor E5-2640 v4
8x 16GB TruDDR4 Memory (2Rx4, 1.2V)
8x 1.2TB 10K 12Gbps SAS 2.5in G3HSHDD
2x 300GB 10K 12Gbps SAS 2.5in G3HSHDD
2x 400GB 12G SAS 2.5in MLC G3HS SSD
ServeRAID M5210 SAS/SATA Controller
Lenovo ServeRAID M5200 2GB Flash/RAID5
3x Broadcom NetXtreme 2x10GbE BaseAdap

Make sure everythin is on the VMware vSAN HCL.

ESXi 6.5.0d Build 5310538
vCenter Server Appliance 6.5.0e Build 5705665

„vSAN 6.6 Setup Demo“ weiterlesen

How to leverage Veeam-Agent to protect physical servers from update failures

In a virtualized world, physical servers have become quite rare. However, some systems like hypervisors or storage-virtualizers need to be physical for obvious reasons.
If you have to upgrade or patch these systems, you’ll keep your fingers crossed and hope they will come up fully functional after the upgrade. You may wish to have a convenient backup or snapshot, like you’re used to in the virtualized world.

Veeam Agent

Actually there is already a solution for the Problem: Veeam Agent for Windows (aka „The Agent formerly known as Veeam-Endpoint“, or TAFKAV).  😉

This software does a very good job since it was released in April 2015. I’ve installed it on countless customers workstations so far. It protects my homelab, my notebook and also some difficult to replace installations on customer sites. The ability to use an existing Veeam-Backup repository makes it even more useful in an enterprise environment.

Veeam Agent 2.0 comes in three flavours: The free version, the Workstation version and the Server version. Workstation offers a similar set of features as the free version, but offers 24/7 support and centralized management. The server version offers application consistent backups including log-truncation. „How to leverage Veeam-Agent to protect physical servers from update failures“ weiterlesen

Nextcloud plugin for Outlook

Sometimes you may wish to send attachments, that are far too big for an email. Of course you can upload the file to your cloudserver beforehand, then share the link and copy/paste that link into your email. Possible, but cumbersome.

If your private cloud is Nextcloud, then there’s good news for you. Nextcloud developers released an Outlook-plugin that ist very useful and shortens the process. Just download the free plugin (lastet version). Choose x64 or x86 setup file according to your Office version. „Nextcloud plugin for Outlook“ weiterlesen

Pockethernet hands on

The Swiss Army knife of network troubleshooting

Have you ever been in a situation where you had to follow a network cable through a mesh (or should I say mess?) of hundreds of other cables, just to find out which switchport it is connected to? If your answer is no, please tell me your secret! 🙂

Cool tool

Last week I got a packet with a handy new tool inside. It’s called Pockethernet. Once started as a crowdfunding project, it is now a mature, full featured network analyzer that easily fits into one hand or the pocket of your shirt.

„Pockethernet hands on“ weiterlesen

ESET ERA Appliance Migrations-Update

Upgrade der ESET ERA-Appliance durch Migration

Die Komponenten der ESET-Remote-Administrator (ERA) Appliance können durch Installation von Update-Paketen aktualisiert werden. Dabei werden jedoch keine Änderungen am zugrunde liegenden Linux getätigt. Möchte man die gesamte Appliance inklusive der ESET-Software erneuern, so gibt es einen komfortablen Weg mit einem Cross-Update. „ESET ERA Appliance Migrations-Update“ weiterlesen