JBOD (Single)-function (2 HDDs as 2 independent drives) on USB

Thanks, I understand the risk with power cut and a UPS is definitely a good advice.

We have some free space on the NAS (X-RAID2) but all slots are used and the space left won't cover the need for this particular project

Those external drives are supposed to collect raw pictures from a timelaps system via FTP.

This system will be running over 3 years, accumulating a really large amount of data (raw pict) from 4 differents cameras.

We'd like to use both USB3 port with 4 x 12TB HDD (1 HDD per camera)

The idea by using a USB external JBOD system instead of internal NAS is to be able to easily replace the HDD when they are running out of space.

A JBOD system makes the whole set-up much more flexible. HDD can be stored and used directly on workstations for editing.

Well, perhaps a new 4 drives NAS set up as JBOD is actually a better / safer solution…

Thanks again for your advice