Tag Archives: vSphere

Fast migration (conversion) VMs between hypervisors by NetApp Shift.

NetApp created a  Project Shift which allows customers to change the virtualization platform their VMs run on without migrating any data (of course VMs have to be located on NetApp storage). Shift currently supports Physical to Virtual (P2V) and Virtual to Physical (V2P) but also Virtual to Virtual (V2V) migrations between Citrix XenServer, Microsoft Hyper-V and VMware ESXi.… Read More »

Perennial reservation: long boot time of esxi host

Within last year, I have been asked by my customers or I have had to do the troubleshooting many times why ESXi hosts 5.x need much time to boot. More often the reason of slow booting were caused by RDM used by Microsoft Cluster Services (MSCS). Why? Because the active node has persistent SCSI reservation on the attached… Read More »

Tools to analyze performance on VMware.

The high performance and security of infrastructure are the most important areas that IT administrators and engineers should care about. Fortunately day by day we can use new tools which help us to achieve it. In this article I will briefly describe  tools which can be used e.g. to measure storage performance in a virtual environment and to… Read More »