# Docker Registry Microsoft Azure Blob Storage Driver An implementation of the `storagedriver.StorageDriver` interface which uses [Microsoft Azure Blob Storage][azure-blob-storage] for object storage. ## Parameters The following parameters must be used to authenticate and configure the storage driver (case-sensitive): * `accountname`: Name of the Azure Storage Account. * `accountkey`: Primary or Secondary Key for the Storage Account. * `container`: Name of the root storage container in which all registry data will be stored. Must comply the storage container name [requirements][create-container-api]. * `realm`: (optional) Domain name suffix for the Storage Service API endpoint. Defaults to `core.windows.net`. For example realm for "Azure in China" would be `core.chinacloudapi.cn` and realm for "Azure Government" would be `core.usgovcloudapi.net`. [azure-blob-storage]: http://azure.microsoft.com/en-us/services/storage/ [create-container-api]: https://msdn.microsoft.com/en-us/library/azure/dd179468.aspx