I have previously had success using Paragon's Boot Camp Backup to backup and restore my Windows 7 partition to a new solid state drive. Recently, I upgraded my 250 GB SSD to a 500 GB SSD. In preparation I used this application to backup my now Windows 10 partition on Mac OS X El Capitan 10.11.2.
The interface is divided into two tabs, Backup Boot Camp and Restore. Their functions are self-explanatory. The former allows options to enable scheduling and to edit the amount of incremental backups to keep. The latter allows options to mount backup images and to merge incremental backups.
The backup process was simple and quick. You select the source, my Windows 10 partition in this case, and then the destination to save the backup image. There's also an option to check and repair the file system before backup, making it unnecessary to boot into Windows and run the commands yourself. The backup image is mountable allowing one access to all backed up data, which can easily be extracted from the image.
The restore process wasn't as simple, though it wasn't difficult by any means. I first used Time Machine to restore my Macintosh partition to the new SSD. I then used Boot Camp Assistant to create a new Windows partition. I had some trouble getting Boot Camp Backup to recognize my backup image in the Restore tab. I found that I oddly had to select the Backup Boot Camp tab and select the image as the destination in the save as prompt. Only then was I successfully able to restore to the newly created Windows partition.
Afterwards I booted into Windows 10, but I was met with a black screen. The operating system was unable to boot. I had to use Boot Camp Assistant to create a Windows 10 usb install disk. After booting from the usb install disk I navigated to troubleshooting options and opened a command prompt. I executed these three commands:
After a reboot, Windows 10 successfully booted. There was no need for reactivation. Everything was there as if it had always existed on the new SSD. This is thanks to its sector-level backup method. I was satisfied. Paragon's Boot Camp Backup met and exceeded my expectations. Best of all, it is free (for now).