A little cheat sheet I thew together for PI Data Archive security. Hopefully others find this useful as well!
Update: with the recent Product Release: PI API 2016 for Windows Integrated Security (WIS) you can now use Windows Integrated Security (WIS) with PI Interfaces (and in fact, you will no longer be able to use PI Trusts or explicit login if you upgrade to PI API 2016). Please see the release notice \ documentation for details. The procedure for migrating existing PI API connections from PI Trusts or explicit logins to PI Mappings can be found in the PI Data Archive 2016 R2 Security Configuration Guide.