I have tested the CIFS acceleration by creating two connectivity directives in both directions and both WAEs as Core and Edge. My observations are,
1. If the OFFICE1 user opens a remote share from OFFICE2, WAE-OFFICE1 becomes the edge and WAE-OFFICE2 becomes the core (auto discovery happens for file server)
2. When the user copies content from remote share, the caching happens in WAE-OFFICE1 (along with the generic optimizations like TFO,DRE and LZ)
So the consecutive transfer can happen (if the file is not modified in the source) directly from the WAE-OFFICE1 edge device (performance improvement is good)
3. At the same scenario, When the OFFICE1 user tries to copy contents from local to remote share - I dont see any performance difference
Please clarify Whether caching happens only in the edge device or both WAEs
Please provide any troubleshooting document on this case if any.