src/RpkUtils/Sysinfo/Server.php
public static function hdd() 
    {
        $hdd        = new \StdClass();
        $hdd->total = @disk_total_space(".");
        $hdd->free  = @disk_free_space(".");
        
        return $hdd;
        
    }
public static function hdd() 
    {
        $hdd        = new \StdClass();
        $hdd->total = @disk_total_space(".");
        $hdd->free  = @disk_free_space(".");
        
        return $hdd;
        
    }
Server hdd information
@return \StdClass
->total
->free