question

Hello.

Please consider this Bicep template:

 param deploymentName string = ''
    
 resource storageAccountsRedis 'Microsoft.Storage/storageAccounts@2021-04-01' = {
   name: '${deploymentName}redis'
   location: resourceGroup().location
   sku: {
     name: 'Standard_GRS'
   }
   kind: 'BlobStorage'
   properties: {
     accessTier: 'Cool'
     allowSharedKeyAccess: true
   }
 }
    
 resource redisDatabase 'Microsoft.Cache/redis@2020-12-01' = {
   dependsOn: [
     storageAccountsRedis
   ]
   name: '${deploymentName}Redis'
   location: resourceGroup().location
   properties: {
     enableNonSslPort: true
     redisConfiguration: {
       'rdb-backup-enabled': 'true'
       'rdb-backup-frequency': '15'
       'rdb-backup-max-snapshot-count': '1'
       'rdb-storage-connection-string': 'DefaultEndpointsProtocol=https;BlobEndpoint=https://${storageAccountsRedis.name}.blob.${environment().suffixes.storage};AccountName=${storageAccountsRedis.name};AccountKey=${storageAccountsRedis.listKeys().keys[0].value}'
     }
     redisVersion: '6'
     sku: {
       capacity: 1
       family: 'P'
       name: 'Premium'
     }
   }
 }

This is a very simple template that deploys Redis, with a backup to Storage Account every 15 minutes. When I deploy it a container -persistence is created in the Storage Account, but no backups ever appear in it. I can't find any errors/warnings regarding backups.

I don't know how should I proceed from here.