nicnicman You would likely see the message that the image could not be created for the Samsung for the simple reason a 1tb drive wouldn't large even if it was totally empty. The compression wouldn't be high enough to compress the 1.5tb down under 1tb to start with. Then 1tb see the average of 920gb available after partitioning and formatting.
On the hand if you didn't have 3/4s of the 2tb drive filled you might get away with two images one from each of the 1tb drives. With 4 internal HDs and 1 in a usb enclosure I simply add each new file or download to the same specific folder seen on 4 of the 5 HDs were if any drive fails the other will still have the exact same files except for the OS. One or two drives will see an image of the host/boot/OS stored on them.
Eventually I want to an external case that will hold 4-6 2-3tb drives and call it a day!