can Async os 8.5 coexist on a cluster with previous versions?

[Greg Howley]

My production cluster of c670's currently runs 7.6.3-019.

We've had some issues updating the OS to 8.5 in my test environment, so i want to do one machine at a time in prod to reduce the impact if something goes sideways.  Is it possible to have 8.5.0-473 & 7.6.3-019 in the same cluster?

Thanks

[Robert Sherwin]

No.  In cluster, all appliances MUST be running the SAME revision of AsyncOS.

I hope this helps!

-Robert

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