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What is recommended AU_SIZE for cluster disk group in ASM (19c)

in Database Install/Upgrade/Opatch (MOSC) 3 commentsAnswered ✓

We default all out presentation disk groups to 4Mb as our estate has a mixed bag of various applications. However a question arose whether the cluster disk group should also be set to 4Mb.

We are predominately looking at AU_SIZE delivering performance that what disk sizes it can handle.

As the cluster disk group does not have the same data characteristics as the application databases allowing it to remain at 1Mb is sufficient - but is any advantage gained specifically setting it to 4Mb?

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