I am not sure this is strictly true although it may be all that is officially supported.
Certainly the platform, major version, disk layout etc. must be the same, but I have in the past restored ontape/onbar to a different patch, at least once to get around a bug in 'ontape' (was some time ago). Not every patch results in changes to the underlying storage. I think 'onmode -b' gives an idea of what is possible. To be clear I am not recommending doing this; it would be preferable to restore to the exact same patch and then upgrade is that is what you want to do.
Ben.
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Benjamin Thompson
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Original Message:
Sent: Wed July 15, 2020 11:20 AM
From: Eric Vercelletto
Subject: Is it possible to perform onbar backup/restore between heterogeneous platforms?
Simple answer : NO WAY !
Must be same binary informix distribution and same Informix version including patch.
If they upgrade the 11.50 to 11.70 or above, can be achieved thru ER
Cheers
ERic