Q: What RAM upgrade is required to enable Intel TDX on the OpenMetal Medium v5?
Enabling Intel TDX on the OpenMetal Medium v5 requires replacing all 8 installed 32 GB DIMMs and filling all 8 empty slots with 64 GB DDR5-6400 RDIMMs, reaching 1 TB total across all 16 slots, followed by BIOS configuration to activate TDX.
The base Medium v5 ships with 256 GB (8x 32 GB, 8 slots empty). Because TDX requires full slot population at the 64 GB module size (not a partial fill), the upgrade involves a complete DIMM swap rather than simply adding modules to the empty slots. Attempting to activate TDX below the 1 TB threshold or with mixed module sizes is not supported on the Xeon 6505P platform.
After the DIMM swap, the server must be configured in BIOS to enable TDX mode. OpenMetal handles this BIOS configuration step during provisioning for new deployments, or as part of the upgrade process on a deployed server. Contact the OpenMetal team to schedule a maintenance window for the RAM swap and BIOS update.
Once complete, the 1 TB configuration activates TDX Trust Domain isolation, Intel TME-MK with up to 1,024 memory encryption keys, and retains SGX with 128 GB EPC. The 2 TB maximum (16x 128 GB) is also reachable from this configuration without further TDX configuration changes, as TDX remains active above the 1 TB threshold.
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