Massive Blu-Ray burning session underway

I have 4 (relatively new!) 2Tb hard drives in an “Icy Dock” station for data storage/backup of all the astronomy data and the main computer.  Now last night one of these drives decides to play stupid 🙁  O.K. I have been caught out really badly before now, so now there’s only one thing for it – a job I have put off for months – time to start getting all your valuable deep-sky data burned on to Blu-Ray discs.  So I’m making a start on what will be a marathon data transfer session.  So far I’ve burned 4 x 25Gb Blu-Ray discs, at least another 20 to go I reckon.