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The '''Server Base System Architecture''' ('''SBSA''') is a hardware system architecture for [[server (computing)|server]]s based on 64-bit [[ARM architecture|ARM]] processors.<ref>{{cite news |author=Peter Bright |date=30 January 2014 |title=ARM finally defines a platform as it sets its sights on the server room |publisher=[[Ars Technica]] |url=https://arstechnica.com/information-technology/2014/01/arm-finally-defines-a-platform-as-it-sets-its-sights-on-the-server-room/ }}</ref><ref>{{cite news |author=Johan De Gelas |date=29 January 2014 |title=ARM and Partners Deliver First ARM Server Platform Standard |publisher=[[AnandTech]] |url=http://www.anandtech.com/show/7721/arm-and-partners-deliver-first-arm-server-platform-standard |archive-url=https://web.archive.org/web/20140131074619/http://anandtech.com/show/7721/arm-and-partners-deliver-first-arm-server-platform-standard |url-status=dead |archive-date=January 31, 2014 }}</ref><ref>{{cite press release |title=ARM Ecosystem Collaborates to Deliver Initial Server Platform Standard |date=29 January 2014 |publisher=[[ARM Holdings]] |url=http://www.arm.com/about/newsroom/arm-ecosystem-collaborates-to-deliver-initial-server-platform-standard.php }}</ref><ref>{{cite news |author=Jonathan Corbet |date=5 February 2014 |title=ARM, SBSA, UEFI, and ACPI |publisher=[[LWN.net]] |url=https://lwn.net/Articles/584123/ }}</ref>
== Rationale ==
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=== Server Base Boot Requirements ===
[[Firmware]] issues are addressed separately in the Server Base Boot Requirements (SBBR) specification.<ref>{{Cite web|title=Server and Infrastructure|url=https://developer.arm.com/architectures/platform-design/server-systems|last=Ltd|first=Arm|website=ARM Developer|language=en|access-date=2020-05-13}}</ref>
== Platform validation ==
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=== Level 6 ===
Extends level 5, e.g. with support for [[speculative execution]] safety features.
=== Level 7 ===
Extends level 6, e.g. with support for Arm Memory System Resource Partitioning and Monitoring (MPAM) and Performance Monitoring Unit (PMU) features.
== Versions ==
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SBSA Version 6.0 was released on September 16, 2019.
=== SBSA Version 6.1 ===
SBSA Version 6.1 was released on September 15, 2020.
=== SBSA Version 7.0 ===
SBSA Version 7.0 was released on January 31, 2021.
=== SBSA Version 7.1 ===
SBSA Version 7.1 was released on October 6, 2022.
== See also ==
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