Upgrading vCenter fails at Stage 1 due to potential lack of storage space

Products

• VMware vCenter Server

Issue/Introduction

When attempting to upgrade your vCenter, deployment fails during Stage 1:

Upgrade - Stage 1: Deploy vCenter Server

A problem occurred during installation

Installer log files are located at C:\Users\username\AppData\Local\Temp\vcsaUiInstaller

Environment

vCenter Server appliance 8.0

Cause

In the installer-YYYYMMDD-xxxxx.log, you see entries similar to:  

2024-06-11T02:46:42.647Z - warn: checkDiskspace:[xlarge-xlstorage]: required diskSpace > providedDiskspace: 5818 : 4643

2024-06-11T02:49:45.978Z - info: output:+ <Error>
+ <Type>
+ vmodl.fault.SystemError
+ </Type>
+ <LocalizedMsg>
+
+ </LocalizedMsg>
+ <Arg type="string" fieldName="reason">
+ Error creating disk Out of resources
+ </Arg>
+ </Error>
+ </Errors>

This may be due to lack of free space on the target datastore or the chosen deployment size is too large for the available space.

Resolution

Change the VCSA deployment size, or select a different target datastore with sufficient free space.