But if you Click on this Link:
http://docs.splunk.com/Documentation/Splunk/7.1.0/Installation/AboutupgradingREADTHISFIRST
You can See the following Point:
Upgrade paths
Splunk Enterprise supports the following upgrade paths to version 7.1 of the software:
• From version 6.5 or later to 7.1 on full Splunk Enterprise.
• From version 6.5 or later to 7.1 on Splunk universal forwarders.
If you run a version of Splunk Enterprise prior to 6.5:
Upgrade from your current version to version 6.5.
Upgrade to version 7.1.
See About upgrading to 6.5 - READ THIS FIRST for tips on migrating your instance to version 6.5.
Are you sure that it's possible?
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