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vSphere High Performance Cookbook

You're reading from   vSphere High Performance Cookbook A cookbook is the ideal way to learn a tool as complex as vSphere. Through experiencing the real-world recipes in this tutorial you'll gain deep insight into vSphere's unique attributes and reach a high level of proficiency.

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Product type Paperback
Published in Jul 2013
Publisher Packt
ISBN-13 9781782170006
Length 240 pages
Edition 1st Edition
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Author (1):
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Prasenjit Sarkar Prasenjit Sarkar
Author Profile Icon Prasenjit Sarkar
Prasenjit Sarkar
Prasenjit Sarkar is a product manager at Oracle for their public cloud, with a focus on cloud strategy, Oracle Ravello, cloud-native applications, and the API platform. His primary focus is driving Oracle's cloud computing business with commercial and public sector customers, helping to shape and deliver a strategy to build broad use of Oracle's Infrastructure as a Service offerings, such as Compute, Storage, and Database as a Service. He is also responsible for developing public/private cloud integration strategies, customers' cloud computing architecture visions, future state architectures, and implementable architecture roadmaps in the context of the public, private, and hybrid cloud computing solutions that Oracle can offer. He has also authored six industry-leading books on virtualization, SDN, and physical compute, among others. He has six successful patents and six more patents pending at the US PTO. He has also authored numerous research articles.
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Table of Contents (15) Chapters Close

vSphere High Performance Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. CPU Performance Design FREE CHAPTER 2. Memory Performance Design 3. Networking Performance Design 4. DRS, SDRS, and Resource Control Design 5. vSphere Cluster Design 6. Storage Performance Design 7. Designing vCenter and vCenter Database for Best Performance 8. Virtual Machine and Application Performance Design Index

Using VM Monitoring

When you enable VM Monitoring, the VM Monitoring service, which is serviced by VMware Tools, evaluates whether each virtual machine in the cluster is running or not. Regular heartbeats and I/O activity from the VMware Tools process will be checked by the VM Monitoring service to determine the running guest.

Sometimes, VM heartbeats or I/O activity are not received by the VM Monitoring Service because the guest operating system has failed or VMware Tools is not being allocated time to complete its tasks. If the VM Monitoring Service does not get to listen to those heartbeats, then it declares that the virtual machine has failed and the virtual machine is rebooted to restore service.

The VM Monitoring service also monitors a virtual machine's I/O activity just to avoid unnecessary resets. If there are no heartbeats received within the failure interval, the I/O stats interval (a cluster level attribute) is checked. The I/O stats interval (by default 120 seconds) determines...

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