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Computer per OU average should be retrievable

AD-COMP-08InfoActive DirectoryComputers

Part of Active Directory · Active Directory · Computers · All checks

Run this check
Invoke-Maester -TestId AD-COMP-08

Understanding the distribution density of computers across OUs helps identify:

  • Overloaded OUs: OUs with too many computers may indicate poor structure or policy bottlenecks
  • Underutilized OUs: Many OUs with very few computers may indicate unnecessary complexity
  • Policy application issues: Uneven distribution can lead to inconsistent security policy application
  • Administrative burden: Poor structure increases management overhead

The average, minimum, and maximum computers per OU provide metrics for assessing organizational efficiency.

Operational

  • Aim for a balanced OU structure that:
    • Supports your Group Policy design (each OU should have a clear policy purpose)
    • Enables delegated administration without excessive granularity
    • Can be easily understood and navigated by administrators
  • Investigate OUs with unusually high computer counts
  • Consider consolidating OUs with very few computers if they serve similar purposes
  • Document the OU design rationale for future administrators

This test groups all enabled computers by their parent container and calculates:

  • Average computers per OU
  • Minimum computers in any OU
  • Maximum computers in any OU
  • Distribution across the top containers
  • Test-MtAdComputerOUCount - Counts the total number of OUs with computers
  • Test-MtAdComputerInDefaultContainer - Identifies potential OU structure gaps
Every attribute of this check
FieldValue
Test IDAD-COMP-08
SeverityInfo
SuiteActive Directory
ProductActive Directory
FeatureComputers
AreaInfrastructure hardening
Resource typeOrganizationalUnit
MITRE ATT&CKNone
PowerShell testTest-MtAdComputerPerOUAverage
ServicesActiveDirectory
PermissionsActiveDirectory:Ldap:computer:ReadProperty