[ACSH_DatabaseBackup], Строка 21. Ошибка 3013: BACKUP DATABASE is terminating abnormally.

CREATE PROCEDURE [ACSH_DatabaseBackup]
  @RunUser		BIT
AS
SET NOCOUNT ON;

BEGIN TRY
  -- Делаем BACKUP.
  DECLARE @DBNAME SYSNAME
  DECLARE @BackupName NVARCHAR(256)

  IF @RunUser = 0
    SET @BackupName = 'Auto'
  ELSE
    SET @BackupName = 'User'

  SET @BackupName = @BackupName + '_' + REPLACE(CONVERT(NVARCHAR(10), GETUTCDATE(), 104), '.', '') + '_' + 
    REPLACE(CONVERT(NVARCHAR(8), GETUTCDATE(), 108), ':', '')
  SET @DBNAME = (SELECT db_name())

  BACKUP DATABASE @DBNAME
    TO DISK = @BackupName  
END TRY
BEGIN CATCH
  ;THROW
END CATCH

RETURN 0
GO

DECLARE	@errmsg			NVARCHAR(2048)	= ERROR_MESSAGE(),
		@errno			INT				= ERROR_NUMBER(),
		@proc			SYSNAME			= ERROR_PROCEDURE(),
		@lineno			INT				= ERROR_LINE()
       
  SET @errmsg = COALESCE(QUOTENAME(@proc), '<dynamic SQL>') + 
                ', Строка ' + LTRIM(STR(@lineno)) + '. Ошибка ' + 
                LTRIM(STR(@errno)) + ': ' + @errmsg