For me, it’s already the standard procedure: Once I arrived at home after a shoot, the first thing I do is a complete backup of all those images! Data loss is a very traumatic experience that, unfortunately, many of us go through at some point in our lives.
Backup, backup and again backup!
Centralising the data
I save all photos to a Synology DS920+ NAS or Network Attached Storage. The NAS is equipped with 4 Western Digital Red Pro hard drives and has a capacity of 16 TerraBytes. Once saved to the NAS, it automatically creates a double backup to two external Western Digital SSD drives. I recommend always doing a triple backup (or more) if something goes wrong with the NAS or one of the SSD drives. As an extra safety measure, the NAS can automatically backup to a Cloud service if needed. Centralising your data is crucial in case of a computer failure and makes duplication of data easy.