I keep the original built with all my software drive and also do System images and file backups. I cloned the new 1TB drive from the original before removing it from the system using an M.2 external NVMe drive dock ~ $39 at Amazon. Buying the Surface with 1TB is about $400 more and I got the drive for $200 new from and eBay vendor and installed it a couple of months ago. I have the original 128GB Surface Pro 7+ drive since I upgraded to a 1TB Microsoft OEM M.2 NVMe.

To see if I like the speed and other factors to decide if it is a keeper. I usually build my new systems with all my paid for and free software, files, music, pics and docs. That third backup is keeping the original drive.

But I tend to buy 128 or 256GB main SSD drives today and if I like the system I upgrade where I can select the SSD I want both in capacity and speed with heat control a factor in All in One and Surface Tablets with upgradable SSD. I pretty much always get a system with the CPU and Mobo specs I want, but I need a 1 TB main drive and the secondary internal storage drive 1TB as well. Rich that is almost as good as it gets for me.

Macrium reflect how to clone a disc