ACFS is now supported on Exadata. But ACFS does not support Exadata smart scan and offloading , this mean you cannot place your critical databases on ACFS. Please see following Oracle note 1929629.1 for details.
ACFS Support database version :
- Oracle Database 10g Rel. 2 (10.2.0.4 and 10.2.0.5)
- Oracle Database 11g (18.104.22.168 and higher)
- Oracle Database 12c (22.214.171.124 and higher)
- Oracle ACFS replication or security/encryption/audit is only supported with general purpose files.
- Oracle ACFS does not currently support the Exadata offload features.
- Hybrid Columnar Compression (HCC) support requires fix for bug 19136936.
- Exadata Smart Flash Cache will cache read operations.
- Exadata Smart Flash Logging is not supported.