# Configuration

Administrators can easily adjust virtual machine (VM) configurations within Parallels Desktop-as-a-Service (DaaS) to align with their users' workload demands and organizational budget.

**Selecting a VM Size**

Parallels DaaS provides predefined VM sizes—**Light**, **Medium**, and **Heavy**—optimized for common usage scenarios:

* **Light**: Suitable for basic tasks such as data entry or running simple applications.
* **Medium**: Ideal for standard office applications, moderate browsing, and typical productivity tools.
* **Heavy**: Designed for demanding workloads, multimedia processing or complex applications

Administrators may also select a **Custom** option, allowing granular control to tailor virtual machines precisely by configuring:

* **vCPUs**: Adjust the number of virtual CPUs.
* **Memory (RAM)**: Set the memory allocation.
* **Disk Storage**: Specify disk size according to storage needs.
* **GPU**: Include GPU resources for graphic-intensive workloads. 
* **Cost Control**: Balance performance with budgetary constraints.

**Modifying VM Configuration**

To modify or select VM configurations, follow these steps:

1. Open the **Parallels DaaS Management Console**.
2. Navigate to **Virtual Machines** > **Configuration**.
3. Review the current VM settings.
4. Click **Edit** to launch the configuration wizard.
5. Follow the on-screen prompts to select either a predefined size or choose the **Custom** option for detailed specification adjustments.

**Impact of Configuration Changes**

* Newly provisioned virtual machines will automatically apply the updated specifications.
* Existing user sessions on current virtual machines remain uninterrupted during the change.

By regularly assessing and aligning VM specifications to actual usage patterns, administrators can optimize resource utilization and cost efficiency without impacting user productivity.


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