How to setup CrashPlan Cloud Backup on a Synology NAS

A very detailed post about setting up CrashPlan Cloud Backup on a Synology NAS running DSM 5.0

Remember, any good backup strategy follows the Backup Rule of Three.

3 copies of anything you care about - Two isn’t enough if it’s important.
2 different formats - Example: Dropbox+DVDs or Hard Drive+Memory Stick or CD+Crash Plan, or more
1 off-site backup - If the house burns down, how will you get your memories back?

Source: http://www.hanselman.com/blog/UPDATED2014HowToSetupCrashPlanCloudBackupOnASynologyNASRunningDSM50.aspx