Blog

Distributed Resource Scheduler is really interesting technology and recently I have written an article regarding DRS as a technology and how it works. This time, I would like to show you two really interesting flings that might help you to understand DRS behavior and resource management of your environment more deeply. If you don’t know, […]

DRS is a technology that makes your virtual machine happy. DRS constantly monitor your cluster utilization and making sure, that your VMs will get their resources the most effective way. DRS also use another technology – VMware vMotion for actual migrations of the virtual machines between ESXi hosts based on the balancing algorithms and its […]

One of the new features in vSphere 6.7 is Instant Clone. Well, it’s not exactly new feature, some of you might heard about something called VMfork but since vSphere 6.7 its fully integrated into the vSphere itself. So, what it is? Imagine a situation when you need to (almost) instantly create dozens or even hundred […]

Many of you might be considering upgrading to Vmware vSphere 6.7 but what about your underlaying hardware of ESXi? Is it capable of running ESXi 6.7? I have found this great fling by absolute coincidence. If you never heard about flings, you must visit labs.vmware.com. It’s a wonderful collection of various scripts or extended functionality […]

Last time we have performed update of VCSA from 6.5 to 6.7 and now it’s time for our ESXi serves. As you probably know, there are basically three possible approaches so let’s have a look at them. Update through CLI In this case we will need SSH access to our ESXi server. There is a […]

As you already know, new version of VMware vSphere is generally available. So how the upgrade procedure work? It is the same as it always was. You need to upgrade both crucial components of VMware vSphere – vCenter server itself and then ESXi host. Please, be advised that you have always update vCenter server first. […]

Yes, new version of VMware vSphere was recently announced! There are many changes but from my perspective the biggest change is, that HTML5 interface is almost done. According to VMware you should be able to perform like 95% of tasks using this new interface. Finally, we can get rid of that slow Flex client! So, […]

Keeping your infrastructure up-to-date is one of the crucial tasks of day to day operations of every system administrator. Path management and compliance checks of the environment is usually long run and unfortunately not every environment is patched periodically. There are several major results of un-patched environment Missing security patches that might lead into compromising […]

If you ever designed larger infrastructure projects, you might already know that cabinet size is not the only limitation for your infrastructure. There are other huge factors as well and probably the biggest is power limitation of the cabinet itself. Either if you are running your own DC room or you rent cabinets in existing […]

My application is running slow, hey IT guy, can you check that and make sure you fixed it! How many times have you heard such complain? I bet that it is quite common. In this series I would like to talk about common performance issues you might see within your environment and today we will […]