Can 6.4 be upgraded directly to 7 or are there versions in between that need to be upgraded to first?
As an example upgrading from 4.1.8 to 6.0 required updating to 4.2.5 followed by 5.0 before upgrading to 6.x.
Hi Mike,
just give this document a read.
http://docs.splunk.com/Documentation/Splunk/7.0.1/Installation/AboutupgradingREADTHISFIRST
In my opinion you are fine upgrading from 6.4.X to 7.0.1 without any problems, but don't trust me!
Cheers!
P.S.: Keep in mind to check apps on splunkbase for their compatibility and update them as well.