<!--
{
  "availability" : [
    "macOS: 11.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Virtualization",
  "identifier" : "/documentation/Virtualization/VZStorageDeviceConfiguration",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "Virtualization"
    ],
    "preciseIdentifier" : "c:objc(cs)VZStorageDeviceConfiguration"
  },
  "title" : "VZStorageDeviceConfiguration"
}
-->

# VZStorageDeviceConfiguration

The common configuration traits for storage device requests.

```
class VZStorageDeviceConfiguration
```

## Overview

Don’t create a [`VZStorageDeviceConfiguration`](/documentation/Virtualization/VZStorageDeviceConfiguration) object directly. Instead, instantiate one of its subclasses, such as [`VZVirtioBlockDeviceConfiguration`](/documentation/Virtualization/VZVirtioBlockDeviceConfiguration). Use the [`attachment`](/documentation/Virtualization/VZStorageDeviceConfiguration/attachment) property of this class to access the device’s underlying storage.

## Topics

### Getting the attachment point

[`attachment`](/documentation/Virtualization/VZStorageDeviceConfiguration/attachment)

The attachment object that provides the underlying storage for the device.

## Relationships

### Conforms To

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

[`NSCopying`](/documentation/Foundation/NSCopying)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`CVarArg`](/documentation/Swift/CVarArg)

### Inherited By

[`VZUSBMassStorageDeviceConfiguration`](/documentation/Virtualization/VZUSBMassStorageDeviceConfiguration)

[`VZVirtioBlockDeviceConfiguration`](/documentation/Virtualization/VZVirtioBlockDeviceConfiguration)

[`VZNVMExpressControllerDeviceConfiguration`](/documentation/Virtualization/VZNVMExpressControllerDeviceConfiguration)

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)