Troubleshooting backup of the vCenter Server failing after VCSA upgrade

Products

• VMware vCenter Server

Issue/Introduction

Manual initiation of a file-based backup of the VCSA fails.

File-based backup is persistently failing

Environment

VMware vCenter Version 8.x

Resolution

• Check if the backup server has enough space to store the backup.
• Backup could have lost it's protocol after upgrading thus check that the protocol settings are still persistent.
  • Check with a different backup target with the same protocol and see if it works fine.
  • Check with a different backup protocol with the current backup target.
• If the above did not resolve your issue please open a ticket with Broadcom with the below details
  • Share the output of below commands:  (Replace username and password)
    • /usr/bin/curl --fail -u <username>:<password> --connect-timeout 10 --noproxy * --silent --show-error --list-only -v 'sftp://<sftp_server_ip>:/BackupRestore/VMware/vcf/vcenter/vCenter/<vcenter_fqdn>/' 
    • /usr/bin/curl --fail -u <username>:<password> --connect-timeout 10 --noproxy * --silent --show-error --list-only -v 'sftp://<sftp_server_ip>:/BackupRestore/VMware/vcf/vcenter/vCenter/<vcenter_fqdn>/'
  • Note: Kindly confirm the backup location as well before executing the above command.

If SFTP is still not working, please consider configuring a different protocol, related SFTP Troubleshooting kb:  Issues with SFTP VAMI backup on 7.0 u3c and above