VMware ESX – Shared Disk Between VMs

In VMware virtualization environments (as a rule in clustering scenarios) it may be necessary to share the same disk (vmdk or RMD) between 2 (or more) virtual machines (VMs) on VMWare ESXi. The most optimal way is to use the vmdk disk physically located on the shared storage or locally on the ESXi host and this can be done following some specific configurations to be able to access data between different VMs on the same storage. Read More …

VMware vMotion – Error “Different offload or security policies”

This unable to migrate error indicates that the source and destination servers have different security or offload settings configured on the virtual switch or portgroup that the virtual machine is connected to and usually is related to Traffic Shaping options enabled not on all physical hosts. Read More …

VMware vCenter – Enable Single Sign On (SSO)

Platform Service Controller is a new component in VMware vSphere. The PSC contains all the services that vCenter needs for its functions including Single Sign-On (SSO). This post describes how to configure AD authentication in vCenter Server. Read More …

CentOS / RHEL 7 – Regenerate UUID for Network Cards (Physical and Virtualized Environments)

Usually, when cloning VMs on virtualized systems (Hyper-V or VMware, for example) an issue could occur related to vNICs: a vNIC could be renamed and so no more the same of the old VMs (obviously). Read More …

VMware – OVF ha un manifest file non valido

Spesso, in ambienti VMware complessi si adopera molto la funzionalit√† di estrazione delle virtual machines in formato OVF/OVA, per poter trasferire tali VM su altri cluster VMware o semplicemente adoperarli come template su altri sistemi di virtualizzazione. Read More …