Before reading the responses, I thought this comment meant "how are you preserving information about yourself so that an upload copy of you could eventually be constructed".

An online automatic backup service (www.code42.com/crashplan)

I use mega.nz to backup files on my computer. I use the service because it has client-side-encryption and provides 50GB of free storage.

I use Evernote for all information like notes or articles I read that I want to remember.

Anki has it's webserver where automatic updates happen. Gmail also automatically has the data in the cloud.

"Only wimps use tape backup: real men just upload their important stuff on ftp, and let the rest of the world mirror it" -- Linus Torvalds

External HDD

I just keep anything I couldn't re-download or re-generate on a couple days' notice in my Dropbox folder.