---
title: auxiliaryStorage
framework: virtualization
role: symbol
role_heading: Instance Property
path: virtualization/vzmacplatformconfiguration/auxiliarystorage
---

# auxiliaryStorage

The Mac auxiliary storage.

## Declaration

```swift
var auxiliaryStorage: VZMacAuxiliaryStorage? { get set }
```

## Mentioned in

Installing macOS on a Virtual Machine

## Discussion

Discussion When creating a VM, the hardware model of the auxiliaryStorage must match the hardware model of the hardwareModel property. Defaults to nil, but you must set a value for a configuration to be valid.

## See Also

### Getting platform properties

- [hardwareModel](virtualization/vzmacplatformconfiguration/hardwaremodel.md)
- [machineIdentifier](virtualization/vzmacplatformconfiguration/machineidentifier.md)