---
name: "vds"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/vds"
---

# vds(4)

virtual disk server

## NAME

**vds**, **vdsp** – virtual disk server

## SYNOPSIS

**vds\* at cbus?** **vdsp\* at vds?**

## DESCRIPTION

The **vds** driver provides a virtual disk server using the services provided by the UltraSPARC Hypervisor as found on sun4v systems. It provides the backing storage for virtual disks in other logical domains through a logical domain channel provided by the UltraSPARC Hypervisor. The **vds** driver uses block devices or disk images in the form of regular files. The name of the block device or file used for the disk image is taken from the domain's machine description.

The **vds** driver supports version 1.0 and version 1.1 of the vDisk protocol.

## SEE ALSO

[cbus(4)](/cbus/4.md), [intro(4)](/intro/4.md), [vdsk(4)](/vdsk/4.md)

## HISTORY

The **vds** driver first appeared in OpenBSD 4.7.

## AUTHORS

The **vds** driver was written by Mark Kettenis ⟨*kettenis@openbsd.org*⟩.