DAOS Version 2.4 includes a Technology Preview of the Metadata-on-SSD (Phase1) code path to support DAOS servers without Intel Optane Persistent Memory.
Please refer to the DAOS Wiki articles on the Metadata-on-SSD Design and the WAL Detailed Design for more information.
A presentation on this new code path, including initial performance comparisons of DAOS Servers with and without PMem, can be found in the presentation DAOS Beyond PMem from the ISC 2023 IXPUG Workshop.