Understanding why “CPU Ready” matters…

One of the biggest advantages of virtualization technology is possibility to overcommit your host’s resources – there’s really small chance of a VM using it’s all assigned CPU / RAM for 24/7 and that’s why we want to place a higher number of VMs on a single host to utilize it’s physical resources in a […]

DHCP Server installation and configuration with multiple VLANs / Scopes using PowerShell

Installation of DHCP servers may be pain in the neck if you need to configure multiple scopes (for VLANs for example). Luckily this process can be automated with powershell. Scirpt will install DHCP role, create local DHCP groups, authorize DHCP in Active Directory and at the end create all defined scopes. All you need to […]

ESXi enable SSH and ESXi Shell using PowerCLI

We can enable SSH & ESXi Shell using GUI or DCUI, but this time I want to show you easier way. Especially if you need to do so for more than single host. First thing we need to do is to connect to vcenter and select host that we want to operate on:

Then, […]

ESXi 5.5 network configuration with PowerCLI

One nasty thing we need to do from time to time is ESXi initial configuration with it’s vswitches, dns, domain, searchdomains, ntp, portgroups, nics and many, many other things… If you possess Enterprise Plus licences you are lucky enough to do all the things using Host Profiles. But in case if you don’t have any Plus […]

NVIDIA GRID K2 VGPU with Citrix XenServer part 4 – Benchmarking

This post is a part of following series: NVIDIA GRID K2 VGPU with Citrix XenServer part 1 – Background Information NVIDIA GRID K2 vGPU with Citrix XenServer part 2 – XenServer Installation NVIDIA GRID K2 vGPU with Citrix XenServer part 3 – VM deployment and drivers installation NVIDIA GRID K2 VGPU with Citrix XenServer part […]

NVIDIA GRID K2 VGPU with Citrix XenServer part 3 – VM deployment and drivers installation

This post is a part of following series: NVIDIA GRID K2 VGPU with Citrix XenServer part 1 – Background Information NVIDIA GRID K2 vGPU with Citrix XenServer part 2 – XenServer Installation NVIDIA GRID K2 vGPU with Citrix XenServer part 3 – VM deployment and drivers installation NVIDIA GRID K2 VGPU with Citrix XenServer part […]

Checking which DC is being used during user logon process

In environments with multiple sites / subnets and domain controllers you may be looking for such information really often. There are at least three options to determine which DC was used for authentication of client. First two possibilities are almost the the same (they are based on the same environment variable). You can either type […]

Exchange: Can’t see any Arbitration mailboxes

I’m just starting with Exchange and already had a first few-hours-long-problem – couldn’t remove a mailbox database because it was still in use by some mailboxes. I did migrate all of the user mailboxes, health mailboxes and there none of arbitration mailboxes… weird, nope? The thing is I’m working with an subdomain and empty root […]