If these are important documents, I agree with Jenny... redundancy is the key. I have a subscription to a cloud backup and I also create a system image every couple of months on an exterior drive. Depending on which OS you are using, Microsoft also has a built in document backup solution called File History. It detects when you have changed a document and does incremental backups of files as often as you tell it to. It's automatic, so you don't get to choose to replace a file with the same name. I don't use it, but it has come in VERY handy a couple of times for other people when I've had to restore documents. One elderly lady would have lost all her photos, but File History had them on an EHD.