Tag: MCTP

DMTF, NVMe and SNIA form 3-way alliance for SSD storage mgmt

~ hucktech ~ Leave a comment

The DMTF, NVM Express, Inc. and SNIA have formed a new three-way alliance to coordinate standards for managing SSD storage devices. […] In addition to SNIA’s Swordfish and DMTF’s Redfish, the alliance’s collaborative work will include the following standards:

* NVM Express™(NVMe™) is the register interface and command set for PCI Express attached storage with industry standard software available for numerous operating systems. The NVM Express™Management Interface (NVMe-MI™) is the command set and architecture for management of NVM Express storage (e.g., discovering, monitoring, and updating NVMe devices using a BMC).

* DMTF’s Management Component Transport Protocol (MCTP) is a protocol and Platform Level Data Model (PLDM) is a low-level data model defined by the DMTF Platform Management Components Intercommunications (PMCI) Working Group (https://www.dmtf.org/standards/pmci) . MCTP is designed to support communications between different intelligent hardware components that make up a platform management subsystem that provides monitoring and control functions inside a managed system.

* DMTF’s PLDM for Redfish Device Enablement (RDE) defines messages and data structures used for enabling PLDM devices to participate in Redfish-based management without needing to support either JavaScript Object Notation (JSON, used for operation data payloads) or the [Secure] Hypertext Transfer Protocol (HTTP/HTTPS, used to transport and configure operations).

[…]

Click to access NVMe-DMTF-SNIA_Work_Register_v1.0.pdf

https://www.dmtf.org/

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https://www.snia.org/
https://www.snia.org/forums/smi/swordfish
http://www.dmtf.org/standards/redfish

DMTF updates MCTP SMBus/I2C Transport Binding spec

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DMTF Releases Updated MCTP SMBus/I2C Transport Binding Specification
The DMTF’s Platform Management Components Intercommunication (PMCI) Working Group defines standards to address “inside the box” communication and functional interfaces between the components of the platform management subsystem (e.g., management controllers, managed devices, etc.). PMCI’s Management Component Transport Protocol (MCTP) over SMBus/I2C Transport Binding Specification is now available in version 1.1.0 . This specification addresses how MCTP packets are delivered over a physical SMBus or I2C medium using SMBus transactions. It defines how physical addresses are used, how fixed addresses are accommodated, how physical address assignment is accomplished for hot-plug or other devices that require dynamic physical address assignment, and how MCTP support is discovered. In addition, timing specifications for bus and MCTP control operations are included, and a “fairness” protocol is defined for the purpose of avoiding deadlock and starvation/lockout situations among MCTP endpoints. The binding has been designed to be able to share the same bus as devices communicating using earlier SMBus/I2C management protocols, such as Alert Standard Format (ASF) and Intelligent Platform Management (IPMI), and with vendor-specific devices using SMBus/I2C protocols. The specification also allows a given device to incorporate non-MCTP SMBus functions alongside MCTP.

Click to access DSP0237_1.1.0.pdf

https://www.dmtf.org/standards/pmci