Azure naming · Microsoft.Storage/storageAccounts/fileServices/shares

share File share

An Azure Files share inside a storage account.

Naming constraints

CAF abbreviationshare
Resource typeMicrosoft.Storage/storageAccounts/fileServices/shares
Length3–63 characters
CaseLowercase only
Allowed charactersLowercase letters, numbers, and hyphens. Can't start or end with a hyphen; no consecutive hyphens.
Uniqueness Parent resource
SeparatorHyphen

Source: Microsoft Learn, “Naming rules and restrictions for Azure resources”, checked October 2026. Abbreviation from the Cloud Adoption Framework.

Example & copy-ready

A worked name for workload app, env prod, region weu, instance 001.

Example name
share-app-prod-weu-001 Valid
Validation regex for CI checks or pre-commit hooks (.NET and JavaScript) 
^(?=.{3,63}$)(?!.*--)[a-z0-9][a-z0-9-]*[a-z0-9]$
Bicep naming expression 
var name = take(toLower('share-${workload}-${env}-${region}-${instance}'), 63)
Terraform local 
locals {
  name = substr(lower(join("-", compact(["share", var.workload, var.env, var.region, var.instance]))), 0, 63)
}

Azure Policy can't evaluate regular expressions, so a policy can check the share prefix but not the full format. Run the regex in your pipeline, or audit existing names on a schedule.

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Uniqueness scope

Unique within its parent resource only, for example a subnet within its virtual network or a database within its server.

Open in the name generator

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