Storage QoS - Deleting Policies

This first post in the Storage Replica Series shows a complete end-to-end walkthrough of configuring and managing Storage Replica in a Server to Server (S/S) configuration.
TechNet page to step by step directions: https://technet.microsoft.com/en-us/library/mt126103.aspx
1) Is the storage come from local HDD?
2) How you add those local storage into cluster?
3) Is possible I deploy storage replica in TP4 with TP3?
Hope you can reply me asap. Thanks.
How is this different to dfsr like replication ?
Block level rather than file level.
How does it work in-depth ?ie some bitmap of changed blocks
@Alan Chan:Thanks for your comments. Any storage can be used for Storage Replica in the Server/Server configuration. Only cluster-eligible storage would qualify for the cluster scenarios. SR is supported in both TP3 and TP4. Hope this helps!
@anon:Thanks for your question. Yes, Storage Replica works at the block level rather than file level like DFSR. Hope this helps!