It's not quite outside. I have no idea if we tested this much, but we have seen at least one customer who had issues with transparent hugepages and issues stopped without.
This matches some of our developer testing.
So yes I want us to strongly recommend disabling transparent hugepages.
Text can be something like that:
RHEL6 and other newer distributions running on physical hardware are known to have transparent hugepages feature enabled. Which is in general a measurable performance boost. However under some conditions which Couchbase Server is known to trigger it may cause severe delays in page allocations. Therefore we strongly recommend everyone with that feature to disable it.