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

Understanding storage performance


Saturating the underlying storage hardware often causes storage performance issues. Disk intensive applications could saturate the storage and/or the path. To determine whether your vSphere environment is experiencing storage issues you need to monitor disk latency. Storage I/O Control, discussed in Chapter 6, Advanced vSphere Infrastructure Management, can be used to determine if a latency threshold is exceeded. Ensure that your storage can meet the I/O demands of the virtual machines. Consider using SSD solutions as a means of removing the disk spindle from the equation. Using a disk cache approach can increase the IOPS that your storage is capable of. Input/Output Operations Per Second (IOPS) is a common metric used to judge overall storage performance. Shares may also be used to prioritize virtual machine access to storage resources.