---
title: "Increase CPU/RAM of a VM in VDC"
slug: "increase-cpu-ram-of-a-vm-in-vdc"
updated: 2026-11-05T03:49:25Z
published: 2026-11-05T03:49:25Z
canonical: "docs.serversaustralia.com.au/increase-cpu-ram-of-a-vm-in-vdc"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.serversaustralia.com.au/llms.txt
> Use this file to discover all available pages before exploring further.

# Increase CPU/RAM of a VM in VDC

## How to Increase the Disk Size of a VM in vCloud Director

VMware vCloud Director is a leading cloud service-delivery platform used by some of the world’s most popular cloud providers. It’s also a powerful tool for managing virtual environments, including the ability to increase the CPU or RAM allocation of a virtual machine (VM). Here’s a step-by-step guide on how to do it:

> [!WARNING]
> Storage Requirement for RAM allocation/increases
> 
> As explained within [VDC - General Information](/v1/docs/vdc-front-page#storage-requirements) under **Storage Utilisation**, for any given amount of RAM allocated to a VM, the system will need to create an equivalently sized SWAP file. This is done using the storage within your Storage Policy. If you are planning to increase your RAM on a VM by 4 GBs, you will need at least 4 GBs of Storage free to do so. You can check your current free storage under **Data Centers → Storage → Storage Policies**: ![](https://cdn.document360.io/d809f158-d4f4-47ff-83d4-18d9c9f7a04d/Images/Documentation/image-PQ3G9QO2.png?sv=2026-02-06&spr=https&st=2026-11-09T18%3A02%3A17Z&se=2026-11-09T19%3A02%3A17Z&sr=c&sp=r&sig=sZFBXKremU9RixM%2Ff6VQQsCtXEGO6tn8JlY0WECYki0%3D)
> 
> Unlike Storage increases, RAM increases are reversible, and will relinquish the SWAP File upon powering down.

## Step 1: Select the VM

Find the VM whose resources you want to increase in the list of virtual machines. Click on its name to open its properties.

![](https://cdn.document360.io/d809f158-d4f4-47ff-83d4-18d9c9f7a04d/Images/Documentation/image-31O16OV0.png?sv=2026-02-06&spr=https&st=2026-11-09T18%3A02%3A17Z&se=2026-11-09T19%3A02%3A17Z&sr=c&sp=r&sig=sZFBXKremU9RixM%2Ff6VQQsCtXEGO6tn8JlY0WECYki0%3D)

## Step 2: Entering the configuration section

Within **Hardware → Compute** click on **Edit**:

![](https://cdn.document360.io/d809f158-d4f4-47ff-83d4-18d9c9f7a04d/Images/Documentation/image-A0DMLWYY.png?sv=2026-02-06&spr=https&st=2026-11-09T18%3A02%3A17Z&se=2026-11-09T19%3A02%3A17Z&sr=c&sp=r&sig=sZFBXKremU9RixM%2Ff6VQQsCtXEGO6tn8JlY0WECYki0%3D)

This will bring up the configuration section where you can change these values.

## Step 3: Increase/Alter the CPU and RAM allocation

Within **Edit Compute**, you can change the configured values for **CPU** and **Memory** (RAM), before clicking **Save**:

![](https://cdn.document360.io/d809f158-d4f4-47ff-83d4-18d9c9f7a04d/Images/Documentation/image-Q7EY6O9C.png?sv=2026-02-06&spr=https&st=2026-11-09T18%3A02%3A17Z&se=2026-11-09T19%3A02%3A17Z&sr=c&sp=r&sig=sZFBXKremU9RixM%2Ff6VQQsCtXEGO6tn8JlY0WECYki0%3D)

## Step 4: Reboot the VM

> [!NOTE]
> Hot Add Enabled
> 
> If **Virtual CPU hot add** and **Memory hot add** were enabled, this step does not need to happen for vCPU or RAM increases. Please be aware that enabling these settings has a performance penalty, which increases with larger vCPU and RAM allocations in place.
> 
> 
> 
> Please note that removing vCPUs and RAM will always require a reboot as they cannot be hot-removed.

To reboot the VM, this can be done via **All Actions → Power → Power Off** and then **All Actions → Power → Power On**:

![](https://cdn.document360.io/d809f158-d4f4-47ff-83d4-18d9c9f7a04d/Images/Documentation/image-C8UKTOW7.png?sv=2026-02-06&spr=https&st=2026-11-09T18%3A02%3A17Z&se=2026-11-09T19%3A02%3A17Z&sr=c&sp=r&sig=sZFBXKremU9RixM%2Ff6VQQsCtXEGO6tn8JlY0WECYki0%3D)

And that’s it! You’ve successfully increased the CPU and/or RAM of a VM in vCloud Director, and rebooted the server for it to take affect.

If you have any other questions or need further assistance, please raise a case in the [**MySAU Portal**](https://www.mysau.com.au/) or call us on **+61 2 8115 8888**, 24 hours a day, 7 days a week, and our support desk will happily help you out.