If you are referring to the preservation of the fictional character Bilitis's legacy, the "backup" would be the historical and digital archiving of Pierre Louÿs's work. To lend authenticity to his 1894 forgery, Louÿs fabricated an entire "Life of Bilitis," even crediting a fictional archaeologist for "discovering" her tomb.
Today, these works are preserved in digital libraries like Project Gutenberg and Wikipedia , ensuring the "security" of the text against loss. 2. Technical Context: General Android or PC Backups
If "Bilitis" is a folder on your computer, experts at PC World Plus recommend tools like EaseUS Todo Backup or AOMEI Backupper for creating system images or file copies. 3. Organizational Security: Bilitis Resource Center
Regardless of what "Bilitis" refers to in your specific case, a reliable backup follows the : 3 Copies of Data: Keep the original and two backups.
Store backups on different devices (e.g., an external hard drive and a USB flash drive).