var filesystems = JSON.parse(value);

result = filesystems.map(function (filesystem) {
	return {
		'hrStorageDescr': filesystem.hrStorageDescr,
		'hrStorageType': filesystem.hrStorageType,
		'hrStorageAllocationUnits': filesystem.hrStorageAllocationUnits,
		'index': filesystem['{#SNMPINDEX}']
	};
});

return JSON.stringify(result);