Tag: ESXi Upgrade


How to upgrade ESXi 5.5 to 6.5.0 using Update Manager


The following upgrade process will explain you the step by step procedure to upgrade ESXi hosts from 5.5 to 6.5 using update manager:

Pre-upgrade check:

  • Download the ESXi 6.5 ISO image from myvmware.com/softwares/downloads
  • Before upgrading ESXi hosts, complete the vCenter upgrade and check the compatibility of the hardware from “VMware Compatibility Guide
  • Based on the compatibility matrix, consider to upgrade hardware BIOS firmware, drivers, HBA, NICs and partner vendor’s software vibs or include them in the baseline from update manager.
  • Check whether enough resources are available in the ESXi hosts part of the cluster to migrate virtual machines.

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