Home > Storage > PowerFlex > Guides > Dell EMC PowerFlex Add-on and App for Splunk User Guide > Upgrade to Dell EMC PowerFlex Add-on and App
After you upgrade to Dell EMC PowerFlex Add-on and App, you must be aware that historical data is not removed from the Splunk database and newly collected data does not use the old checkpoint files.
Post-upgrade, the supported sourcetype is PowerFlex and not VxFlex.