Book Image

VMware vSphere Troubleshooting

Book Image

VMware vSphere Troubleshooting

Overview of this book

VMware vSphere is the leading server virtualization platform with consistent management for virtual data centers. It enhances troubleshooting skills to diagnose and resolve day to day problems in your VMware vSphere infrastructure environment. This book will provide you practical hands-on knowledge of using different performance monitoring and troubleshooting tools to manage and troubleshoot the vSphere infrastructure. It begins by introducing systematic approach for troubleshooting different problems and show casing the troubleshooting techniques. You will be able to use the troubleshooting tools to monitor performance, and troubleshoot issues related to Hosts and Virtual Machines. Moving on, you will troubleshoot High Availability, storage I/O control problems, virtual LANS, and iSCSI, NFS, VMFS issues. By the end of this book, you will be able to analyze and solve advanced issues related to vShpere environment such as vcenter certificates, database problems, and different failed state errors.
Table of Contents (16 chapters)
VMware vSphere Troubleshooting
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Installing VMware vRealize Operations Manager
Power CLI - A Basic Reference
Index

Chapter 5. Monitoring and Troubleshooting Storage

The VMware vSphere host hides the physical storage layer from end users, and instead, provides a logical storage layer to interact. Virtual machines use virtual disks, which reside on a VMware Virtual Machine File System (VMFS) datastore. Virtual disks are also stored in raw disk datastores or NFS-based datastores. Virtual machines use virtual SCSI controllers, including VMware Paravirtual, BusLogic Parallel, LSI Logic Parallel, and LSI Logic SAS to access the virtual disks in datastores. We will discuss the following topics in this chapter:

  • Storage log files

  • Multipathing and Pluggable Storage Architecture (PSA) troubleshooting

  • Logical unit numbers (LUNs) and claim rules

  • Storage module troubleshooting

  • Troubleshooting iSCSI datastores

  • iSCSI error correction

  • Troubleshooting NFS datastores

  • Troubleshooting VMFS datastores

  • SAN display problems

  • SAN performance troubleshooting

  • Snapshot and resignaturing