Help Mac v Drobo


I am running an iMac with High Sierra 10.13.6 and a Drobo 810n.

I use Bridge version with Photoshop 2.0.3 release (CC).

My problem is that when I try to save jpgs through Bridge my Mac just refuses to save them back to the Drobo and dismounts the drive. Although I can still see the Drobo on dashboard, I can’t mount again without restarting my Mac.

Any ideas would be very welcome as my deadlines are just drifting by.