Thanks Michael! Wow! Providing me with all the infos. I really appreciate It.I think using the LaCie formatted with HFP and a Silicon Mac could be the issue. Before you give up on LaCie I would find a way to get your files - even see if a Windows computer recognizes it since its exFat and then as @Ralph said reformat them for your MPB. This could be your issue. Why: From BH Photo
This file system is only used on old Apple computers now. I believe with High Sierra and later you can use the APFS.
Also the LaCie may have some firmware that needs updating.
FYI the Synology suggestion is not a similar set up. It's a Networked Attached Storage.
Look at some of the basic videos on SpaceRex.com re Synology.
I am using one now but if you want it for editing video might have to go with a model that uses 10gb ethernet.
Here is another point if all else fails.
The LaCie drives:
These drives are high quality and could be removed and put in another device that could be read directly or into a NAS. You still need to try to get the images off them first before reformatting, although if put into a Drive Dock. You may not get the speeds LaCie would deliver so I recommend first the reformat.
So don't give up.
You have options still
i want a simple solution, workspace and Backup. I don’t know why I feel the NAS is difficult to deal with. I will try to reformat the drive again. But also I need to get something else that I can back up everything in it in case this drive fail again. I don’t know why I don’t trust anymore LaCie, maybe because of their bad service and not take responsibility for a drive that I bought it few months ago and suppose to have a warranty of 5 years.
Big Thanks again!
Lina