Configuration::isEnabledStorageSizeRestriction

static function isEnabledStorageSizeRestriction()
{
	static $isAllow = null;
	if($isAllow === null)
	{
		$isAllow = 'Y' == Option::get(Driver::INTERNAL_MODULE_ID, 'disk_restriction_storage_size_enabled', 'N');
	}
	return $isAllow;
}