1. Of course, it is the recoverability of backup software. That's all that matters. After some unrecoverable errors, users use backup software to recover data.

2. Integrity and accuracy of backup software. Need I say more about this?

3. It is also very important that the time spent on backup, such as money, should of course be fast and accurate.

4. You can use several different backup softwares to back up data of different sizes one by one. The content of the test is the three points mentioned above.

I can't think of anything else at the moment. I hope I can help you.