Are you referring to hardware solution or software solutions.
I dont know that Cisco would impose restrictions on an application running on an OS. OS restrictions I can see as it interacts directly with the hardware. Applications running on the OS, I dont think you are going find any guidance from Cisco. The application developer may provide some guidance.
For hardware attached to external SAS ports on the qualified array controller, I dont think external storage solutions are being qualified by Cisco.
Thank You,
Dan Laden
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