Open Compute Project: Difference between revisions

Revision as of 19:30, 25 September 2024

Revision as of 06:47, 28 September 2024

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===Rack and Power designs ===

The designs for a mechanical mounting system have been published, so that open racks have the same outside width (600&nbsp;mm) and depth as standard [[19-inch rack]]s, but are designed to mount wider chassis with a 537&nbsp;mm width (21 inches). This allows more equipment to fit in the same volume and improves air flow. Compute chassis sizes are defined in multiples of an [[Open Rack#OpenU|OpenU]], which is 48&nbsp;mm, slightly taller than the typical 44mm [[rack unit]]. The most current base mechanical specifications were defined and published by Meta as the Open Rack V3 Base Specification in 2022, with significant contributions from [[Google]] and [[Rittal]].<ref>{{cite web |last1=Charest |first1=Glenn |last2=Mills |first2=Steve |last3=Vorreiter |first3=Loren |title=Open Rack V3 Base Specification |url=https://www.opencompute.org/documents/open-rack-base-specification-version-3-pdf |website=opencompute.org |publisher=Meta |access-date=25 September 2024}}</ref>.

At the time the base specification was released, Meta also defined in greater depth the specifications for the [[Rectifier|rectifiers]] and power shelf.<ref>{{cite web |last1=Keyhani |first1=Hamid |last2=Tang |first2=Ted |last3=Shapiro |first3=Dmitriy |last4=Fernandes |first4=John |last5=Kim |first5=Ben |last6=Jin |first6=Tiffany |last7=Mercado |first7=Rommel |title=Open Rack V3 48V PSU Specification Rev: 1.0 |url=https://www.opencompute.org/documents/orv3-48v-psu-spec-rev-1-0-docx-1 |website=opencompute.org |publisher=Meta |access-date=25 September 2024}}</ref><ref>{{cite web |last1=Keyhani |first1=Hamid |last2=Shapiro |first2=Dmitriy |last3=Fernandes |first3=John |last4=Kim |first4=Ben |last5=Jin |first5=Tiffany |last6=Mercado |first6=Rommel |title=Open Rack V3 Power Shelf Rev 1.0 Specification |url=https://www.opencompute.org/documents/ocp-open-rack-v3-power-shelf-rev-1-0-docx-1 |website=opencompute.org |publisher=Meta |access-date=25 September 2024}}</ref>. Specifications for the power monitoring interface (PMI), a communications interface enabling upstream communications between the rectifiers and [[Backup battery|battery backup unit]](BBU) were published by Meta that same year, with [[Delta Electronics]] as the main technical contributor to the BBU spec.<ref>{{cite web |last1=Sun |first1=David |last2=Shapiro |first2=Dmitriy |last3=Kim |first3=Ben |last4=Athavale |first4=Jayati |last5=Mercado |first5=Rommel |title=Open Rack V3 48V BBU Specification Rev: 1.4 |url=https://www.opencompute.org/documents/open-rack-v3-bbu-module-spec-1-4-pdf |website=opencompute.org |publisher=Meta |access-date=25 September 2024}}</ref>.

Since 2022 however, the power demands of [[AI boom|AI in the data center]] has necessitated higher power requirements in order to fulfill the heavy power demands of newer [[AI accelerator|data center processors]] that have since been released. Meta is currently in the process of updating its Open Rack v3 rectifier, power shelf, battery backup and power management interface specifications to account for these new more powerful AI architectures being used.

In May 2024, at an Open Compute regional summit, Meta and Rittal outlined their plans for development of their High Power Rack (HPR) ecosystem in conjunction with rack, power and cable partners, increasing the power capacity in the rack to 92 kilowatts or more of power, enabling the higher [[Electric power|power needs]] of the latest generation of processors.<ref>{{cite web |last1=Open Compute Project |title=ORv3 High Power Rack (HPR) Ecosystem Solution |url=https://youtube/X5A_uX1vzvg |website=youtube.com |publisher=Youtube |access-date=25 September 2024}}</ref>. At the same meeting, Delta Electronics and [[Advanced Energy]] introduced their progress in developing new Open Compute standards specifying power shelf and rectifier designs for these HPR applications.<ref>{{cite web |last1=Open Compute Project |title=Requirements/Considerations of Next Generation ORv3 PSU and Power Shelves |url=https://www.youtube.com/watch?v=7YB08H1ssJc |website=Youtube |publisher=Youtube |access-date=25 September 2024}}</ref>. Rittal also outlined their collaboration with Meta in designing airflow containment, [[busbar]] designs and [[Ground (electricity)|grounding]] schemes to the new HPR requirements.<ref>{{cite web |last1=Open Compute Project |title=ORv3 High Power Rack (HPR) Ecosystem Solution |url=https://www.youtube.com/watch?v=X5A_uX1vzvg |website=Youtube |publisher=youtube |access-date=25 September 2024}}</ref>.

===Data storage ===