Issue link: http://hub-fr.insight.com/i/532074
12 systems. They partition the server into multiple VMs that operate independently but share the same network resources. ✓ Hosted hypervisors: Commonly called Type 2 hypervisors, these are installed as virtual workstations on top of a server's existing operating system, such as Windows Server, Linux or a custom operating system. The host OS has direct access to network resources and hardware, and manages OS connections to those resources. The hosted hypervisor coordinates calls between the VM and the resources it needs to access, including CPU, memory, disk storage, and the network. Today's Challenges Hypervisors brought the benefits of virtualization to the data center. But with progress came challenges that are familiar to most IT managers. A Forrester Research paper, 'Expand Your Virtual Infrastructure with Confidence and Control', identifies the following common challenges in today's first-generation virtualized data centers: ✓ VM sprawl: Creating new virtual machines is so easy that VM workloads tend to propagate quickly. The result is VM sprawl, where more and more VMs are added to a virtualized infrastructure, adding time and costs to manually monitor, manage and secure. ✓ Over provisioning: Around 44 per cent of small and midsized businesses surveyed by Forrester run six or fewer VMs per physical server. That number has the potential to be much higher, probably 25 or more depending on the workload and specifics of the hardware. But without capacity management tools, these businesses lack the visibility they need to