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Use valid Managed Disk names#

Operational Excellence · Virtual Machine · Rule · 2020_06 · Awareness

Managed Disk names should meet naming requirements.


When naming Azure resources, resource names must meet service requirements. The requirements for Managed Disk names are:

  • Between 1 and 80 characters long.
  • Alphanumerics, underscores, periods, and hyphens.
  • Start with alphanumeric.
  • End alphanumeric or underscore.
  • Managed Disk names must be unique within a resource group.


Consider using names that meet Managed Disk naming requirements. Additionally consider naming resources with a standard naming convention.


This rule does not check if Managed Disk names are unique.