Book Image

Learning VMware vSphere

By : Rebecca Fitzhugh, Abhilash G B
Book Image

Learning VMware vSphere

By: Rebecca Fitzhugh, Abhilash G B

Overview of this book

Computer virtualization is a method to enable the running of multiple application workloads on a machine to achieve efficient utilization and reduce the number of physical machines in a data center. This has now become the foundation of many modern day data centers. What began as a technology to virtualize x86 architecture has now grown beyond the limits of a server’s hardware and into the realm of storage and network virtualization. VMware is currently the market leader in developing data center virtualization solutions. This book goes into the details of designing and implementing VMware solutions that form the foundation of a VMware infrastructure. The book begins by introducing you to the concepts of server virtualization followed by the architecture of VMware’s hypervisor – ESXi and then by its installation and configuration. You then learn what is required to manage a vSphere environment and configure advanced management capabilities of vCenter. Next you are taken through topics on vSphere Networking, Storage, ESXi Clustering, Resource Management and Virtual Machine Management. You will then be introduced to SSL Certificate Management and its use in a vSphere environment. Finally, you will learn about the lifecycle management of a vSphere environment by effectively monitoring, patching and upgrading vSphere components using Update Manager. By the end of the book, you will know how to use VMware’s vSphere suite of components to lay the foundation of a modern day virtual infrastructure.
Table of Contents (18 chapters)
Learning VMware vSphere
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface

Bandwidth management using Network I/O Control (NetIOC)


Considering the fact that we now consolidate virtual machines with different workload characteristics less the number of hosts, the network I/O generated by these workloads can impose huge bandwidth requirements on the network adapters. Also, as the number of virtual machines increases, it takes some effort to monitor and control the bandwidth utilization of the workloads.

We did learn about using traffic shaping earlier in this chapter, but that has to be done as per the network construct level. NetIOC, however, operates at the vCenter level, giving it a bird's eye view of all the traffic types in a VDS. It can set bandwidth reservations, shares, limits, and so on to control the bandwidth utilization by controlling noisy neighbor situations.

NetIOC has this intrinsic ability to detect system traffic type and control its bandwidth usage based on shares, reservations, and limits. There are nine system traffic types as shown in the following...