VMware


[DE] Nutanix Metro Availability auf VMware vSphere

[DE] Nutanix Metro Availability auf VMware vSphere

Dieser Beitrag beschreibt das Feature „Metro Availability“, also wie ein raumübergreifendes Cluster Design auf Basis der Nutanix Plattform zusammen mit VMware vSphere aussieht und wie einfach dies zu konfigurieren ist. Da in einer Hyper-Converged Lösung der Hypervisor und Storage in einem Server vereint werden, muss für ein besseres Verständnis geklärt sein, dass hier trotz dieser […]

vSphere 5.5 – vCenter Server Appliance – Could not connect to one or more vCenter Server systems

vSphere 5.5 – vCenter Server Appliance – Could not connect to one or more vCenter Server systems

This is probably the shortest post I’ve written so far, but it might be worth sharing. Usually I boot my lab only when I really do something with it, and sometimes some of the VMs, service, etc. don’t like that up and down. Today I wanted to log into my vCenter Server Appliance which was […]

VMworld 2013 Recap and 2014 Outlook *updated*

VMworld 2013 Recap and 2014 Outlook *updated*

Last year I was one of the lucky guys which were selected to attend VMworld 2013 in San Francisco and as you can imagine I was REALLY excited. It was my first VMworld, my first visit to San Francisco and my first stay in the U.S. I guess I don’t need to mention that SF […]

ESXi shows false Memory Warnings / Alerts

ESXi shows false Memory Warnings / Alerts

It could happen that your ESXi host(s) show a „random“ memory error even if everything seems to be fine. These warnings or alerts can be caused by old log entries and need to be clear manually to fix the problem. But of course if you are not certain if this is maybe a real hardware […]

VMware ESXi – async drivers

VMware ESXi – async drivers

Recently we got some storage problems with a couple of ESXi hosts and one of the recommendations of the VMware support was to update the async drivers. I think that there isn’t much awareness about those drivers as it actually should be, that’s why I wrote this short post. Async drivers are developed by partners […]

Final thoughts about my VSAN experiences

To wrap up my VSAN series I want to share my final thoughts with the community. Please feel free to comment and share yours! All experiences I’ve made with VSAN are only based on my LAB with the minimum deployment of just three hosts and without any real world workload but I would say I’m […]

Working with VSAN – Part IV

Working with VSAN – Part IV

To continue my “Working with VSAN” series, this time I want to challenge the scalability (at least what was possible within my lab). But see yourself. Performance scaling by adding disk groups To see how VSAN scales when adding disks I did the following tests: IOMeter @ 32 QD, 75/25 RND/SEQ, 70/30 R/W, 8KB in […]

Working with VSAN – Part III

Working with VSAN – Part III

In Part I and II I already tested some scenarios which may impact your VSAN cluster, like simulating the outage of two hosts by just isolating them. This time I’m going to torture my VSN lab even more, read on to how this turned out. What if I put one host into maintenance mode and […]

Upgrade vom vSphere 5.0 to 5.5 – 512 bit certificate issue

Upgrade vom vSphere 5.0 to 5.5 – 512 bit certificate issue

This week I upgraded the vSphere 5.0 environment to 5.5 Update 1, which is usually not a big deal. I really can’t complain about the upgrade process itself, it’s more the result which I didn’t expect. Once all components were up to date, I launched the vSphere Web Client which was working fine but at […]

Working with VSAN – Part II

Working with VSAN – Part II

VMware HA It’s important to know that HA must be enabled AFTER VSAN and if you are changing any VSAN networking settings you should re-configure HA so that it is aware of those changes. When VSAN is enabled HA traffic (heartbeat) will be send via the VSAN VMkernel ports. More details can be found on […]

Working with VSAN – Part I

Working with VSAN – Part I

In my last post about VSAN I went through the setup of my VSAN lab without spending too much time on details. This time I want to take some time to look at some details. Computing resources Let’s start easy. The first thing I recognized in a lab with limited physical resources is that the […]

My 1st VSAN (Hands on Experience)

My 1st VSAN (Hands on Experience)

As you all know there has been a huge hype about the first release of VMware’s VSAN, but I’ve decided to wait until I’ve got my hands on it to be really able to rate it appropriately.I’ve never liked to jump onto the marketing train, I always prefer to rate product/solution based on hands on […]

vSphere 5.5 – Central SSO & Web Client – Single Pange of Glass Management

vSphere 5.5 – Central SSO & Web Client – Single Pange of Glass Management

In my last post I wrote about the multi-site deployment of the vCenter Single Sign On server and how to achieve a single pane of glass to manage multiple vCenter servers using Linked Mode. Today I discussed the topic with a colleague and me tough it’s worth also sharing the outcome. The discussed was about […]

vSphere 5.5 – SSO Multi-Site Deployment – Learning by Doing

vSphere 5.5 – SSO Multi-Site Deployment – Learning by Doing

Up to now all vSphere 5.1/5.5 installations I have done so far have been deployed with the Single Sign On service in basic mode, also now known as „for your first vCenter Server” option. But I felt it’s time to familiarize with other deployment scenarios and this is what I want to share with this […]

vSphere – vDS port disconnects & confusion

This week I got a call from one of my workmates of the Microsoft team, who asked me to check a virtual machine which seemed to have some network problems. The first thing I checked were the basics like CPU, RAM, SAN & network utilization. None of those resources was heavily used so I moved […]

vSphere- vmkfstools – frequently used options

One of the tools I use quit often are the “vmkfstools” which provide some really handy functions. I want to share some of the available parameters with a quick description of a use case. Wipe (zero) an existing VMDK vmkfstools –w /vmfs/volumes/<…>.vmdk Why is this useful? Many storage systems are using thin provisioning and for […]

VMworld 2013 & vSphere 5.5

So if you were wondering why I haven’t blogged anything about vSphere 5.5 or VMworld 2013 yet, there is a simple reason. I went to VMworld 2013 in San Francisco as a visitor for my employer and not as a blogger. And I know there are much great blogs out there which will be blogging […]

Veeam v7.0 – My favorites – Transparent vCenter Backup

This post is dedicated to another minor enhancement which makes your life much easier. As you might know, pre Veeam v7.0 if you wanted to backup your virtual vCenter server with full guest processing (I/O quiescing), you had to use some kind of a workaround to make it work. You had to add an ESXi […]

Dell EqualLogic – vSphere iSCSI behavior & MEM Plug-In

Dell EqualLogic – vSphere iSCSI behavior & MEM Plug-In

In my last post about Dell’s EqualLogic series I wrote about the vSphere iSCSI setup based on VMware’s default path selection policies. This time I want to add some details about the behavior of these default PSPs as well as a short how to on Dell’s Multipathing Extension Module. But first let’s make a step […]

vCenter Server 5.1 Update 1 a Released *UPDATED*

VMware yesterday released the update to vCenter 5.1 Update 1 a which replaces the previous update which contained a problem with the Single Sign On service. vCenter Server 5.1 Update 1 has been removed from the VMware download site due to issues encountered when logging in to vCenter Server 5.1 Update 1 with domain credentials.   The […]

VMware vSphere 5.1 – SSO installation takes very long

VMware vSphere 5.1 – SSO installation takes very long

Yesterday I’ve migrated a customer environment from vSphere 5.0 to vSphere 5.1 and as you know, vCenter server now requires a so called Single Sign On (SSO) service. Since this was not my first migration, I prepared the required database and SQL users and went through first setup steps without any problems. Then I hit […]

VMware vSphere 5.1 – Some tips around Single Sign On

VMware vSphere 5.1 – Some tips around Single Sign On

When I did my first installations or upgrades to vSphere 5.1 I struggled with the new single sign on server. Here I will provide you some tips to prevent some pitfalls.   SSO database (connection) SSO requires its own database but this is not the problem. Before your start the SSO installation you should have […]