No, difficult to backup 6TB of data, for this i need to expand my storage.
Also on RAID1 do you thing is required? (I know, more backup, better is…).
Disk is RAID1, i remove the first that is a copy of all data, then after restoring volume with new disk i will chek that all is ok… Also after when i remove the secondo disk i will have a new copy of data that i can store untill new disk is in and volume restored…