Thanks for the details, however I'm still left with questions.
What is your current data replication strategy?
What are your current and desired RPO/RTO?
What other valid data replication strategies are you considering? (Pro/con requires a comparison with something.)
Server/hypervisor/SAN-level replication solutions aren't guaranteed to work with an OpenEdge database because they don't guarantee the correct ordering of block updates, and because part of the state of a running database is the modified buffers in database shared memory, which file- or block-based tools do not know how to replicate. So a copy of a database made with such a tool is likely to be logically inconsistent and unusable.
You can use such tools if you first quiesce the database (and ensure the quiet point has begun), and if you ensure that you understand the structure of the database and you copy all extents.
Crashes enough times to make you not want to buy OE repl.
What crashes? Your database? If so, your current environment may have some other issue that should be explored in a separate thread. That isn't normal.
I have no idea what this means. There is a limit to how much help people can provide for you if you aren't going to put in the effort to post coherent thoughts in complete sentences.