> For the complete documentation index, see [llms.txt](https://helpcenter.xopero.com/xopero-one-en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://helpcenter.xopero.com/xopero-one-en/management/backup-plans/vss-settings.md).

# VSS settings

## Overview and usage

{% hint style="danger" %}
**VSS** is a **Microsoft** service and is available <mark style="color:$danger;">**only**</mark> on **Windows** operating systems.
{% endhint %}

**Xopero ONE** uses **Shadow Copy** (aka **Volume Snapshot Service**, **Volume Shadow Copy Service**, or **VSS**) for its backup operations. **VSS** is a technology included in **Microsoft Windows** that can create backup copies or snapshots of computer files or volumes, even when they are in use.

When creating a backup plan, you can enable the use of **VSS** in the **Advanced settings**—simply toggle the switch. You can also allow the backup to continue even if **VSS** errors occur.

<figure><img src="/files/yZc2JwMMHMVI1Y7KeKEW" alt=""><figcaption></figcaption></figure>

{% hint style="warning" %}
Without **VSS**, backup data may become inconsistent. Use this option only if you fully understand the risk — for example, when running backups outside of working hours.
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## Useful links and items <a href="#error_handling" id="error_handling"></a>

{% content-ref url="/pages/gyIJ3sLWhnjliWWqdolq" %}
[Error handling](/xopero-one-en/management/error-handling.md)
{% endcontent-ref %}