I prefer to do it manually not in the laptop or mobile but in a external hard drive. Only thing is that I have to periodically transfer the data from the laptop and mobile to the hard drive. It may look as old fashioned cumbersome process but I have almost practiced it for quite some time.
Knowledge is power.
1.USB sticks are small, cheap and convenient. They can be stored and transported easily. Transferring data from these to other systems is easy. But chances of losing them are also high. Many time these USBs are lost for very less time and they are not completely reliable.
2. External hard drives are very useful and they can be plugged into other sources. But if we want to use them as stand by, we should not use them regularly. We should transfer the data and use them in case of emergency only. They contain a huge space to store large files.
3. There are many third-party cloud storage options are available They are free or paid or free with paid extras. iCloud, Dropbox, Google Drive and OneDrive are some reliable providers.