Upgrade VMware ESXi 8 to 9 with Zero Downtime 🚀

In this detailed step-by-step tutorial, you will learn how to upgrade your VMware ESXi host from version 8 to version 9 in a production environment with best practices and minimal downtime.

This guide is designed for system administrators, virtualization engineers, and IT professionals who want to safely perform ESXi upgrades without impacting running workloads.

We will cover everything from pre-checks to post-upgrade validation using a real lab demonstration approach.

🔹 What You Will Learn:
Pre-upgrade checklist for ESXi production hosts
Compatibility checks using VMware HCL
Backup and rollback strategy
How to put host in Maintenance Mode
Upgrade methods (ISO, Lifecycle Manager, CLI)
Step-by-step ESXi 8 to ESXi 9 upgrade process
Handling VMs during upgrade (vMotion strategy)
Post-upgrade validation and health checks
Troubleshooting common upgrade issues

🔹 Tools & Technologies Covered:
VMware vSphere / vCenter
ESXi 8 and ESXi 9
Lifecycle Manager (vLCM)
SSH / CLI Upgrade Method
Datastore and VM Management


🔹 Real-World Use Case:
This video demonstrates how upgrades are performed in real production environments where downtime must be minimized and business continuity is critical.

🔹 Best Practices Covered:
Always take configuration backups before upgrade
Ensure hardware compatibility
Use vMotion to migrate workloads
Validate cluster health before and after upgrade

🔹 Who Should Watch:
VMware Administrators
System Engineers
IT Infrastructure Professionals
Beginners learning VMware upgrades

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📢 Connect With Me

Vikas Singh
📧 vikas.9452@gmail.com