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

Physical NIC enumeration


You can enable up to a maximum of 32 1 Gbps and 16 10 Gbps Ethernet ports on an ESXi host. The maximums are governed by the make/model/driver/feature of the NIC cards and their combinations. For instance, you have up to 32 Broadcom 1 GB Ethernet ports using a tg3 driver and NetQueue disabled, but the same NIC with NetQueue enabled can only present 16 ports. If you were to use a combination of 10 GB and 1 GB Ethernet ports, then only 16 10 GB and four 1 GB ports could be enabled.

Refer to the Networking maximums section on page 14 of the Configuration Maximums Guide for vSphere for more details:  https://www.vmware.com/pdf/vsphere6/r60/vsphere-60-configuration-maximums.pdf .

Now that ESXi is capable of managing a large number of physical NICs, there should be a method to logically present these NICs to apply configuration policies on them. This is achieved by enumerating the physical NIC with a vmnicX pattern (vmnic0... vmnic32). Also, there is a logic behind the enumeration...