David Davis

VMware vSphere’s Distributed Resource Scheduler (DRS) is mainly used for load balancing virtual machines on a cluster. While most virtualization admins will want to run DRS in fully automated mode, there may be certain instances when you would want to enforce some conditions by setting what are known as DRS Affinity Rules. In this article, David Davis explains setting up VM to Host Affinity Rules on vSphere 4.1.

How-to tutorial and video by David Davis providing a rundown of Storage IO Control (SIOC), a new feature in vSphere 4.1. SIOC ensures that each virtual machine is given an appropriate allocation of disk resources by preventing a single VM from monopolizing storage resources over other virtual machines. Includes instructions for enabling SIOC, explanation of shares and IOPs, configuration guidelines for controlling resources between VMs, and SIOC performance monitoring.

An overview by David Davis of I/O Virtualization (or IOV), a relatively new form of virtualization utilized in data centers allowing for a huge reduction in network and storage cabling. Video included of interview at VMware Partner Exchange (PEX) 2010 with Stephen Spellicy of Virtensys.

David Davis walks us through the new VMware vSphere 4.1 feature which allows importing of Hyper-V virtual machines into vSphere. Complete instructions for importing Hyper-V VMs into vSphere, including what you’ll need to get started (vSphere 4.1, vCenter 4.1, vCenter Converter 4.2 installer). Video included.

Just released from the team at Train Signal and certified instructor David Davis (VCP4, VCAP-DCA, CCIE, and vExpert), is their new VMware vSphere Troubleshooting Training. Learn how to solve real-world vSphere virtual infrastructure problems as well as prepare for your VCAP-DCA certification with this 14 hour video training course.

vExpert David Davis takes a look at Virtual Profiler from Tek-Tools (vProfiler) and explains what it manages, monitors, and alerts on and how it can help manage your virtual infrastructure.

In this video, Rick Scherer has created the Cisco VSM (virtual supervisor module) and VEM (virtual ethernet module) and now must add an ESX host to the new Nexus 1000V switch. However, as Rick points out, there is more to adding it than just an ESX host and VM than just “adding you to the switch”…

Finding which virtual machines have snapshots, how old those snapshots are, and how much space they take up can be very time consuming in the vSphere client graphical interface – see how this topic is covered in Train Signal’s new vSphere Pro Vol 1 training course.

New from Train Signal and VMware vExperts – Rick Scherer, Hal Rottenberg and David Davis is “vSphere Pro Vol. 1” – the latest VMware vSphere video training course. See a demo and find what’s included in this newest vSphere training resource.

Planning to setup a wireless network? David Davis walks you through five things you should know before rolling up your sleeves.