Controls/EDCA-PERF-006.json
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{
"id": "EDCA-PERF-006", "title": "Processor socket count and logical core baseline", "description": "Exchange servers MUST NOT exceed the recommended processor socket and logical core limits. No more than 2 physical processor sockets are recommended; logical processor count must not exceed 24 for Exchange 2016 or 48 for Exchange 2019/SE. Exceeding these thresholds can cause unexpected performance degradation.", "verify": false, "subject": "Server", "category": "Performance", "severity": "Medium", "severityWeight": 6, "frameworks": [ "Best Practice" ], "references": [ { "name": "CSS ProcessorCheck", "url": "https://microsoft.github.io/CSS-Exchange/Diagnostics/HealthChecker/ProcessorCheck/" } ], "remediation": { "automatable": false, "description": "Reduce the number of processor sockets to no more than 2, or reduce logical processors to within the supported maximum (24 for Exchange 2016, 48 for Exchange 2019/SE). If the CPU is throttled, verify the Power Plan is set to High Performance and change it immediately if not.", "scriptTemplate": "# Diagnose: Check processor socket count, clock speeds, and logical processor counts\nGet-WmiObject -Class Win32_Processor | Select-Object Name, MaxClockSpeed, CurrentClockSpeed, NumberOfCores, NumberOfLogicalProcessors\n\"Total sockets: $((Get-WmiObject -Class Win32_Processor | Measure-Object).Count)\"\n\"Total logical processors: $([System.Environment]::ProcessorCount)\"\n# If CurrentClockSpeed is significantly below MaxClockSpeed, review BIOS power and performance settings." }, "considerations": "Processor socket count and logical core limits are a hardware sizing concern addressed at deployment time. On VMware, the socket count maps to vCPU socket configuration rather than physical sockets; reducing vCPU sockets requires a VM power-off. On physical hardware, reducing socket count requires hardware maintenance. Processor replacement or configuration changes require hardware maintenance windows and potential load redistribution across the DAG.", "roles": [ "Mailbox", "Edge" ] } |