StorageAccountType type  
StorageAccountType enums 
KnownStorageAccountType can be used interchangeably with StorageAccountType,
this enum contains the known values that the service supports.
Known values supported by the service
Standard_LRS: The data disk should use standard locally redundant storage. 
Premium_LRS: The data disk should use premium locally redundant storage. 
StandardSSD_LRS: The data disk should use standard SSD locally redundant storage. 
Premium_ZRS: The data disk should use premium SSD zonal redundant storage. 
StandardSSD_ZRS: The data disk should use standard SSD zonal redundant storage.
type StorageAccountType = string