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*M-SDNO:  [mailto:brian.d.aspnes@intel.com Brian Aspnes] (Intel), [mailto:michael.gregoire@dell.com Michael Gregoire] (Dell), [mailto:corey.hartman@dell.com Corey Hartman] (Dell), and [mailto:andrew.junkins@amd.com Andy Junkins] (AMD)
*M-SDNO:  [mailto:brian.d.aspnes@intel.com Brian Aspnes] (Intel), [mailto:michael.gregoire@dell.com Michael Gregoire] (Dell), [mailto:corey.hartman@dell.com Corey Hartman] (Dell), and [mailto:andrew.junkins@amd.com Andy Junkins] (AMD)
*M-PnP: [mailto:tim.lambert@dell.com Tim Lambert] (Dell) and [mailto:phillip.leech@hpe.com Phil Leech] (HPE)
*M-PnP: [mailto:tim.lambert@dell.com Tim Lambert] (Dell) and [mailto:phillip.leech@hpe.com Phil Leech] (HPE)
*Edge-MHS: [mailto:dirk.blevins@intel.com Dirk Blevins] (Intel), [mailto:jayesh@amperecomputing.com Jayesh Shah] (Ampere), and [mailto:rodion.naurzalin@hpe.com Rodion Naurzalin] (HPE)


==Current Status==
==Current Status==


DC-MHS R1 v1.0 specs have been approved by the OCP Incubation Committee in November 2022.
MHS R1 v1.0 specs have been approved by the OCP Incubation Committee in November 2022.


DC-MHS workstreams are working the MHS R1 v1.1 specifications.  Note:  M-SIF is a workstream new to DC-MHS.  An early version of the M-SIF specification (version 0.5) is included in the Latest DC-MHS Specification section.
MHS workstreams are working the MHS R1 v1.1 specifications.  Note:  M-SIF is a workstream new to MHS.  An early version of the M-SIF specification (version 0.5) is included in the Latest MHS Specification section.


A link to a Readme file explaining how to use the following tables (Latest DC-MHS Specifications, Errata and Supporting Documentation, and Inactive Documents) is here:  [https://docs.google.com/presentation/d/1CyVsLCPpkJb0FV_ZOYjWndqE4AHATdh-/edit?usp=share_link&ouid=107990764505043211297&rtpof=true&sd=true Link]
A link to a Readme file explaining how to use the following tables (Latest MHS Specifications, Errata and Supporting Documentation, and Inactive Documents) is here:  [https://docs.google.com/presentation/d/1CyVsLCPpkJb0FV_ZOYjWndqE4AHATdh-/edit?usp=share_link&ouid=107990764505043211297&rtpof=true&sd=true Link]




===Latest Released DC-MHS Specifications===
===Latest Released MHS Specifications===


Note:  The Final Spec Agreement (FSA) for the latest specs has not yet been signed.  You may access the released versions in the Contribution Database ([https://www.opencompute.org/contributions?query=DC-MHS Contribution Database]).
Note:  The Final Spec Agreement (FSA) for the latest specs has not yet been signed.  You may access the released versions in the Contribution Database ([https://www.opencompute.org/contributions?query=DC-MHS Contribution Database]).
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|-
|-
! Type !! Description !! Version !! Submit Date !! Contributor !! style="min-width:100px;"| Link !! Notes
! Type !! Description !! Version !! Submit Date !! Contributor !! style="min-width:100px;"| Link !! Notes
|-
| Specification
|| M-PIC Base Specification 48V Addendum
|| 0.6
|| 6/6/2024
|| Cliff DuBay
|| [https://drive.google.com/file/d/1eDkv7DgxqHjUtF0h785nW0ULO58k1o0M/view?usp=drive_link 0.6 Link (non CB Version)]<br>
[https://drive.google.com/file/d/1dD9z0Pm_UsC_G9gYGsk6TPAmRl7VSP-W/view?usp=drive_link 0.6 Link (CB version)]
|| Updates:
*Added updates from M-PIC v1.05.
*Updated PDB Management naming.
*Added 48V requirements to the Compliance Checklist.
*Updated from ORv3 to 48V Rack throughout.
*Added a requirement for 48V peripherals that also use 12V in section 10.2.11.
*Removed the requirement for 12V PICPWR connectors to be used for egress only on 48V HPMs and PDBs.
*Added a contributor.
|-
|-
| Specification  
| Specification  
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|| Updates:
|| Updates:
*Added option to support 2nd DC-DCM and DSFF NIC for Class C/D HPMs
*Added option to support 2nd DC-DCM and DSFF NIC for Class C/D HPMs
|-
| Specification
|| M-PESTI Base Specification
|| 1.2 RC2
|| 3/14/24
|| Jeff Kennedy
|| [https://drive.google.com/file/d/1QQ3GfDzTk5SxdgS-O8sTWjwuyzBsCmw2/view?usp=drive_link Link (no change bar)]<br>[https://drive.google.com/file/d/1IKukmYfK4odMg9vJ5KIzcDloc-O7WwiX/view?usp=drive_link Link (CB Version)]
|| Several small updates including:
*Modifying the presence pulldown range.
*Amending payload format.
|-
| Specification
|| M-XIO Base Specification
|| 1.04 RC1
|| 2/28/24
|| Charlie Ziegler
|| [https://drive.google.com/file/d/19YLMtsquBXUIfRlqPN4B73DY09cJBD3H/view?usp=drive_link Link (non CB Version)]
[https://drive.google.com/file/d/16UX1dyT8h-sZ2pfIZBL7368XFY5Sz8ZO/view?usp=drive_link Link (CB version)]
|| Updates:
*Update compliance link.
*Fix typos.
|-
|-
| Specification
| Specification
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*Updated M-DNO to be consistent with M-SDNO
*Updated M-DNO to be consistent with M-SDNO
|-
|-
| Specification
| Specification  
|| M-PESTI Base Specification
|| M-PIC Base Specification 48V Addendum
|| 1.2 RC2
|| 0.3
|| 3/14/24
|| 3/1/2024
|| Jeff Kennedy
|| Cliff DuBay
|| [https://drive.google.com/file/d/1QQ3GfDzTk5SxdgS-O8sTWjwuyzBsCmw2/view?usp=drive_link Link (no change bar)]<br>[https://drive.google.com/file/d/1IKukmYfK4odMg9vJ5KIzcDloc-O7WwiX/view?usp=drive_link Link (CB Version)]
|| [https://drive.google.com/file/d/1s-LYJnZg-TUbDS0f_ufa7lx-AXCrfJXd/view?usp=drive_link 0.3 Link (non CB Version)]<br>
|| Several small updates including:
[https://drive.google.com/file/d/1eoLctpEQ2kFhkVWWUuBd6LZsPAN3vHG8/view?usp=drive_link 0.3 Link (CB version)]  
*Modifying the presence pulldown range.
*Amending payload format.
|-
| Specification
|| M-XIO Base Specification
|| 1.04 RC1
|| 2/28/24
|| Charlie Ziegler
|| [https://drive.google.com/file/d/19YLMtsquBXUIfRlqPN4B73DY09cJBD3H/view?usp=drive_link Link (non CB Version)]
[https://drive.google.com/file/d/16UX1dyT8h-sZ2pfIZBL7368XFY5Sz8ZO/view?usp=drive_link Link (CB version)]
|| Updates:
|| Updates:
*Update compliance link.
Early directional version (0.3) of the M-PIC Base Specification 48V Addendum.
*Fix typos.
The 48V content is being developed in a separate document with the intent to integrate it into the main M-PIC specification once the content is ready.  
|-
|-
| Specification
| Specification
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|}
|}


===Latest Released DC-MHS MCAD===
===Latest Released MHS MCAD===


{| class="wikitable" style="width: 100%; margin:auto; vertical-align:top; text-align:left;"
{| class="wikitable" style="width: 100%; margin:auto; vertical-align:top; text-align:left;"
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|-
|-
| HPM
| HPM
|| MHS Common Chassis Design for Differing HPM Thickness and CRPS Connector Offsets
|| DC-MHS Common Chassis Design for Differing HPM Thickness and CRPS Connector Offsets
|| Design Spec
|| Design Spec
|| PDF
|| PDF
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|| [https://drive.google.com/file/d/1vBpCg3VhXHFfzQfVmS6GGRWk6jGU_DOE/view?usp=drive_link Link]
|| [https://drive.google.com/file/d/1vBpCg3VhXHFfzQfVmS6GGRWk6jGU_DOE/view?usp=drive_link Link]
|| CRPS Design Specifications.
|| CRPS Design Specifications.
|-
| PIC
|| M-PIC Base Specification 48V Addendum
|| PDF
|| 0.3
|| 3/1/24
|| Cliff DuBay
|| [https://drive.google.com/file/d/1s-LYJnZg-TUbDS0f_ufa7lx-AXCrfJXd/view?usp=drive_link 0.3 Link (non CB Version)]<br>
[https://drive.google.com/file/d/1eoLctpEQ2kFhkVWWUuBd6LZsPAN3vHG8/view?usp=drive_link 0.3 Link (CB version)]
|| Update:
*Early directional version (0.3) of the M-PIC Base Specification 48V Addendum.
*The 48V content is being developed in a separate document with the intent to integrate it into the main M-PIC specification once the content is ready.
|-
|-
| PIC
| PIC
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==Communication==
==Communication==
*Project communication is done through [https://ocp-all.groups.io/g/OCP-MHS https://ocp-all.groups.io/g/OCP-MHS]
*Project communication is done through [https://ocp-all.groups.io/g/OCP-DC-MHS https://ocp-all.groups.io/g/OCP-DC-MHS]
*Post: [mailto:ocp-mhs-public@OCP-All.groups.io ocp-mhs-public@OCP-All.groups.io]
*Post: [mailto:OCP-DC-MHS@OCP-All.groups.io OCP-DC-MHS@OCP-All.groups.io]
*Subscribe: [mailto:ocp-mhs-public+subscribe@OCP-All.groups.io ocp-mhs-public+subscribe@OCP-All.groups.io]
*Subscribe: [mailto:OCP-DC-MHS+subscribe@OCP-All.groups.io OCP-DC-MHS+subscribe@OCP-All.groups.io]
*Unsubscribe: [mailto:ocp-mhs-public+unsubscribe@OCP-All.groups.io ocp-mhs-public+unsubscribe@OCP-All.groups.io]
*Unsubscribe: [mailto:OCP-DC-MHS+unsubscribe@OCP-All.groups.io OCP-DC-MHS+unsubscribe@OCP-All.groups.io]
*''Please make sure to follow the steps until you receive 1) confirmation email from noreply@Groups.io 2) welcome email from [mailto:ocp-mhs-public@OCP-All.groups.io ocp-mhs-public@OCP-All.groups.io]''
*''Please make sure to follow the steps until you receive 1) confirmation email from noreply@Groups.io 2) welcome email from [mailto:OCP-DC-MHS@OCP-All.groups.io OCP-DC-MHS@OCP-All.groups.io]''
*''Please check your junk box and unblock noreply@Groups.io if you have trouble receiving the confirmation email''
*''Please check your junk box and unblock noreply@Groups.io if you have trouble receiving the confirmation email''
*To access the mailing list archives go to [https://ocp-all.groups.io/g/ocp-mhs-public https://ocp-all.groups.io/g/ocp-mhs-public]
*To access the mailing list archives go to [https://ocp-all.groups.io/g/OCP-DC-MHS https://ocp-all.groups.io/g/OCP-DC-MHS]
 


==Meeting Schedule==
==Meeting Schedule==
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*Schedule is the third Wednesday of every month at 0800 PST.
*Schedule is the third Wednesday of every month at 0800 PST.
*Each workstream has its own weekly meeting for companies that have signed the MHS R1 CLA.
*Each workstream has its own weekly meeting for companies that have signed the MHS R1 CLA.
*[https://www.opencompute.org/projects/mhs OCP MHS Project Calendar]
*[https://www.opencompute.org/projects/dc-mhs OCP DC-MHS Project Calendar]


==Recordings from Past Monthly Meeting Calls==
==Recordings from Past Monthly Meeting Calls==
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|| [https://drive.google.com/file/d/1HMjO4TsFTw04wltFQUaiUjsSsspvb_w3/view?usp=share_link Recording]
|| [https://drive.google.com/file/d/1HMjO4TsFTw04wltFQUaiUjsSsspvb_w3/view?usp=share_link Recording]
|| [https://docs.google.com/presentation/d/1PUfREdEHktxyDaP5mk85Ddvw-3Nn12Sd/edit?usp=share_link&ouid=107990764505043211297&rtpof=true&sd=true Slides]
|| [https://docs.google.com/presentation/d/1PUfREdEHktxyDaP5mk85Ddvw-3Nn12Sd/edit?usp=share_link&ouid=107990764505043211297&rtpof=true&sd=true Slides]
|}
==Slides/Recordings from April 2024 OCP Regional Summit==
{| class="wikitable" style="width: 100%; margin:auto; vertical-align:top; text-align:left;"
|-
! Presenter (Company) !! Title !! Recording !! Slides
|-
| Paul Artman (AMD)<br>Dirk Blevins (Intel)<br>Rob Nance (Jabil)
|| Data Center Modular Hardware System Specification (DC-MHS) the overview
|| [https://www.youtube.com/watch?v=lyB49m-3maQ Video]
|| [https://drive.google.com/file/d/1Zyli_17qrjioO_mkYAHCxc3iBJcUCcWV/view?usp=drive_link Slides]
|-
| Paul Artman (AMD)<br>Dirk Blevins (Intel)<br>Rob Nance (Jabil)
|| DC-MHS Modular Shared Infrastructure (M-SIF)
|| [https://www.youtube.com/watch?v=xYromesfuD8 Video]
|| [https://drive.google.com/file/d/1XGHiMXNIRNICuMjdkactn6ov8UJC0MlX/view?usp=drive_link Slides]
|}
|}


==Slides/Recordings from October 2023 OCP Global Summit==
==Slides/Recordings from October 2023 OCP Global Summit==


There were a number of MHS Technical Talks and Experience Center Lightning Talks at the October 2023 OCP Global Summit in San Jose. The presentations and recordings are posted below.
There were a number of DC-MHS Technical Talks and Experience Center Lightning Talks at the October 2023 OCP Global Summit in San Jose. The presentations and recordings are posted below.


{| class="wikitable" style="width: 100%; margin:auto; vertical-align:top; text-align:left;"
{| class="wikitable" style="width: 100%; margin:auto; vertical-align:top; text-align:left;"
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|| [https://drive.google.com/file/d/1iI-91bOFzT9ozsfpyTpKWpxrcpGDCafH/view?usp=drive_link Slides]
|| [https://drive.google.com/file/d/1iI-91bOFzT9ozsfpyTpKWpxrcpGDCafH/view?usp=drive_link Slides]
|}
|}


==Slides/Recordings from April 2023 OCP Regional Summit==
==Slides/Recordings from April 2023 OCP Regional Summit==
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The most recent documents will always be in the OCP Marketplace, Specifications & Design Collateral
The most recent documents will always be in the OCP Marketplace, Specifications & Design Collateral
*[https://www.opencompute.org/contributions https://www.opencompute.org/contributions]
*[http://www.opencompute.org/contributions http://www.opencompute.org/contributions]
or the OCP Marketplace, Orderable Products
or the OCP Marketplace, Orderable Products
*[https://www.opencompute.org/products https://www.opencompute.org/products]
*[http://www.opencompute.org/products http://www.opencompute.org/products]
Entries below are for ease of use and historical reference. Please use the marketplace links for the most recent documents.
Entries below are for ease of use and historical reference. Please use the marketplace links for the most recent documents.


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