For Snapshot Copies, the datasheet does a good job describing how we architected and why we are able to create them without impacting performance Snapshot datasheet (PDF).
For SnapMirror you could start with the “SnapMirror Async Overview and Best Practices Guide” Read Document
For SyncMirror: “High-Availability Pair Controller Configuration Overview and Best Practices” Read Document
For SnapLock there is a great analyst report by that describes how SnapLock coexists with deduplication “NetApp SnapLock Compliance Volume and NetApp Deduplication Storage Capabilities” Read Document.
For FlexClone: “Using FlexClone to Clone Files and LUNs” Read Document
I’m not sure about ACLs, but you might try “NFSv3/v4 in Data ONTAP 8.1 Operating in Cluster-Mode Implementation Guide” Read Document. If you are really asking about how we do ACL for mixed UNIX and Windows, then you can look at “NetApp Storage System Multiprotocol User Guide” Read Document