I have a small online retail shop and I am wondering what is a good back up software that I could use specifically for this business, I'm familiar with computers (learned this through tutorial services) but not enough I guess. Any suggestion is highly appreciated. Thanks

FTP probably.

I use an external hard drive to back up all my files, a SanDisk could probably work too, depends on how much you want to store. This way if the computer crashes your files are all stored.

2 TB external ...seems a safe way to go.......I have too many files....

If the free backup software is the best alternative that is available, then it is highly recommended that the software used should be one that does not need installation.Singular entries that are corrupt, incorrect or missing are considered mild as they will often cause little to no errors. These are what we hope for as repair software can easily fix them in the appropriate manner.

If that hard drive goes out which they don't last forever, you are wiped out, or a motherboard, cpu, or a virus takes over, you are up the creek. Software is on the computer, that's why I suggested an external hard drive, especially if you are running an online business or even an offline business for that matter.