How to switch NAS OS between QTS and QES

最后修订日期: 2022-03-30

Some NAS models, like TES-1885U / TES-3085U / TDS-16489U-R2 can be either run with QTS or QES. These NAS models are shipped with QES OS by the factory default. You can follow the below procedure to switch it to QTS if you need.

Attention: All of the data on the disk will be removed and reconfigured after switching from one to the other OS. Please backup your data first if any before proceeding to the next step.

Switch from QES to QTS

Make sure you have already backed up all data of the NAS first.
Shutdown NAS and unplug all disks from both front and rear disk slots.
Power on the NAS and enter NAS web management page.
After entering the webpage, you can find the Switch to QTS button at the bottom of the page.

Click the Switch to QTS button.

Click the Yes button to confirm it and wait for the system reboot.

After the system boot up, it completes to switch to QTS. Then you can plug in all disks to start the NAS initialization.

Switch from QTS to QES

Make sure you have already backed up all data of the NAS first.
Shutdown NAS and unplug all disks from both front and rear disk slots.
Power on the NAS and enter NAS web management page.
After entering the webpage, you could only see this Hard Drive Missing page but could not find the Switch to QES button.

At this moment, please plug in one free disk (Make sure no available data on it).
After the disk is plugged in, you should be able to find the Switch to QES button at the bottom of the page.