Once upgraded, patch will go away. you have to re-apply patch that applies to the upgraded OneFS if needed.
Does anybody know whether patch software ramains in Isilon after OneFS upgrade or not?  For example, we can apply Patch-189708 to OneFS 8.0.0.0-8.0.0.4. Suppose I apply the patch to my OneFS 8.0.0.0 Ision and upgrade the Isilon to OneFS 8.0.0.4, do I have to reinstall Patch-189708 again (since the OneFS upgrade clear the patch software)? Or I don't have to reinstall Patch-189708 since the patch remains in the Isilon?
Does patch software remain in Isilon after OneFS upgrade?