NetBackup 7.6 Windows 2012 Storage Server HP StoreEasy

I have a an HP StoreEasy appliance that needs backed up.  It's running Windows 2012 Storage Server and per the most recent SCL that's not supported as a NetBackup 7.6 client.  I have ~40TB of data on this.  I'm also running NBU 5230's for master and media servers.  Please provide thoughts on the following scenarios. 

1.  Install NBU 7.6 client although it's not technically supported. 

OR

2.  Mount the shares on a Windows 2008 R2 server and backup the shares leveraging Accelerator & Client sided dedupe.  Would there be an issue recovering ACLs?

OR

3.  What would you recommend?

Thanks