VMware vSAN: Troubleshooting

Storage and virtual infrastructure administrators who want to be able to perform initial troubleshooting on their software-defined storage with vSAN

By the end of the course, you should be able to meet the following objectives:

• Describe the architectural components of vSAN and their roles
• Explain how the components interact with each other
• Explain the differences between object and component states
• Describe how to use Skyline Health to investigate and help determine failure conditions
• Explain how to use the command-line tools to help determine failure conditions

1  Course Introduction

•  Introductions and course logistics
•  Course objectives

2  vSAN Architecture

•  Describe the vSAN architecture and components
•  Describe the policy-driven, object-based vSAN storage environment
•  Describe the CLOM, DOM, LSOM, CMMDS, and RDT vSAN software components
•  Explain the relationship between objects and components
•  Determine how specific storage policies affect components
•  Describe component placement

3  Troubleshooting Methodology

•  Use a structured approach to solve configuration and operational problems
•  Apply troubleshooting methodology to logically diagnose faults and optimize troubleshooting efficiency

4  Troubleshooting Tools

•  Discuss VMware Skyline Health and the associated service
•  Describe the use of VMware Skyline Health to identify and correct problems in VMware vSAN
•  Apply information presented by vSAN Health online towards problem-solving
•  Use vsantop to view vSAN performance metrics
•  Discuss the ways to run commands from the vCenter Server and ESXi command lines
•  Discuss the ways to access vSphere ESXi Shell
•  Use commands to view, configure, and manage your vSphere environment
•  Discuss the esxcli vsan namespace commands
•  Discuss when to use Ruby vSphere Console (RVC) commands
•  Explain which log files are useful for vSAN troubleshooting
•  Use log files to help troubleshoot vSAN problems

You must complete one of the following prerequisites:

• Understanding of concepts presented in the VMware vSphere®: Install, Configure, Managecourse
• Completion of the VMware vSAN: Deploy and Manage course or equivalent experience with vSAN
• Experience working with command-line interfaces

The course presumes that a student can perform the following tasks with no assistance or guidance before enrolling:

• Use VMware vSphere® Client™ for common operations
• Create and manage VMware vCenter Server® objects, such as data centers, clusters, hosts, and virtual 
   machines
• Create and modify a standard switch
• Modify a distributed switch
• Create a VMware vSphere® VMFS datastore
• Use a wizard or a template to create a virtual machine
• Migrate a virtual machine with VMware vSphere® vMotion® and VMware vSphere® Storage vMotion®
  

If you cannot complete all of these tasks, VMware recommends that you complete the VMware vSphere: Install, Configure, Manage and VMware vSAN: Deploy and Manage courses before enrolling in VMware vSAN: Troubleshooting.