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A new Setup warning in SQL 22 CU15
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docs/sql-server/compute-capacity-limits-by-edition-of-sql-server.md

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@@ -4,7 +4,7 @@ description: This article discusses compute capacity limits for SQL Server 2019
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author: MikeRayMSFT
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ms.author: mikeray
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ms.reviewer: randolphwest, derekw
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ms.date: 07/30/2024
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ms.date: 11/08/2024
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ms.service: sql
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ms.subservice: release-landing
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ms.topic: conceptual
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## Limit number of logical cores per NUMA node to 64
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You can experience issues such as stack dumps on servers with more than 64 logical processors per NUMA node. A BIOS or firmware configuration can reduce the logical core count to a maximum of 64 logical processors per NUMA node, presented to the operating system.
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You can experience issues such as stack dumps on servers with more than 64 logical processors per NUMA node. A BIOS or firmware configuration can reduce the logical core count presented to the operating system to a maximum of 64 logical processors per NUMA node.
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> [!CAUTION]
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> [!INCLUDE [sssql22-md](../includes/sssql22-md.md)] Cumulative Update 11 introduced a breaking change, where the [!INCLUDE [ssde-md](../includes/ssde-md.md)] doesn't start if it detects more than 64 logical cores per NUMA node.
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>
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> Starting from [!INCLUDE [sssql22-md](../includes/sssql22-md.md)] Cumulative Update 15, Setup produces a warning that this configuration is unsupported and will result in the [!INCLUDE [ssde-md](../includes/ssde-md.md)] service being stopped and disabled. The warning is also included in Setup logs.
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You can reduce the logical core count per NUMA node in an [Azure Virtual Machine](#disable-smt-in-an-azure-virtual-machine), by disabling SMT. For [bare-metal](#reduce-logical-core-count-on-bare-metal-instances) [!INCLUDE [ssnoversion-md](../includes/ssnoversion-md.md)] instances, you can reduce the logical core count with sub-NUMA clustering (SNC) or Nodes per Socket (NPS) options.
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