T-REX does full backups of each server nightly and weekly using the Linode Backup Service 

Linode Backup Service is a simple and reliable on-site backup solution for your cloud server. This seamlessly integrated system performs backups without interruption.

T-REX staff advise strongly against creating backups or using backup plugins because while they may *store* the backups off-site, most of them create a temporary file on the server prior to sending it offsite  or a complete backup on the server. Each web store is allocated enough disk space for that store. Any additional disk space usage such as individual store backups performed by store owners will cause the store to run into disk quota issues and can cause database corruption.

If your database or website becomes corrupt due to a plugin that you installed, you may be responsible for costs associated with repairing or restoring your store.

NOTE: UpdraftPlus - Backup/Restore and other backup plugins are known to use up allocated server space on T-REX sites.

This is what the plugin looks like when installed and acive:

If you receive warnings about Disk Usage, you will need to Deactivate this or other backup plugin and delete the backup it created.

Examples of Errors

This is what a Disk Usage warning looks like in your CPanel.

In this example, the backups are using up more than half of the allocated server space for this T-REX store. The store is using the other slightly less than half of the server space, so combined, the disk space is maxed out and the T-REX store will start displaying warnings and may not function correctly.

Or the error message could look like this:

To fix this issue

1) Deactivate the Plugin 

2) Delete the backup that the plugin created

Here's an example of how to delete backups created by a plugin.