Devolutions.CIEM

0.2.21

Checks/Azure/Test-StorageGeoRedundantEnabled.ps1

function Test-StorageGeoRedundantEnabled {
    <#
    .SYNOPSIS
        Tests if geo-redundant storage (GRS) is enabled on storage accounts.

    .DESCRIPTION
        Ensures that geo-redundant storage (GRS) is enabled on critical Azure Storage
        Accounts for data durability and availability during regional outages.

    .PARAMETER CheckMetadata
        Hashtable containing check metadata from AzureChecks.json.

    .OUTPUTS
        [PSCustomObject[]] Array of finding objects.
    #>
    [CmdletBinding()]
    [OutputType([PSCustomObject[]])]
    param(
        [Parameter(Mandatory)]
        [hashtable]$CheckMetadata
    )

    $ErrorActionPreference = 'Stop'

    # SKU names that provide geo-redundancy
    $geoRedundantSkus = @('Standard_GRS', 'Standard_RAGRS', 'Standard_GZRS', 'Standard_RAGZRS')

    foreach ($subscriptionId in $script:StorageService.Keys) {
        $storageData = $script:StorageService[$subscriptionId]

        foreach ($account in $storageData.StorageAccounts) {
            $accountName = $account.name
            $resourceId = $account.id

            # Check the SKU name for geo-redundancy
            $skuName = $account.sku.name

            if ($geoRedundantSkus -contains $skuName) {
                $status = 'PASS'
                $statusExtended = "Storage account '$accountName' has geo-redundant storage enabled (SKU: $skuName)."
            }
            else {
                $status = 'FAIL'
                $statusExtended = "Storage account '$accountName' does not have geo-redundant storage enabled (SKU: $skuName). Consider using GRS, RA-GRS, GZRS, or RA-GZRS for critical data."
            }

            $findingParams = @{
                CheckMetadata  = $CheckMetadata
                Status         = $status
                StatusExtended = $statusExtended
                ResourceId     = $resourceId
                ResourceName   = $accountName
                Location       = $account.location
            }
            New-CIEMFinding @findingParams
        }
    }
}