Increasing Crashplan's default RAM
One of the tools that I like to recommend to people looking to backup their data is Crashplan by Code42. It constantly works to backup all your data to the cloud for the very low price of around $5/month. There's no limit to what you can backup and no throttling. Drives that were attached to your machine once will be backed up, unlike Backblaze which deletes them after 90 days of being "offline." In short, it's awesome, except for when it crashes.
I hadn't ever seen it crash until last week. It boots as a login item, does its thing and begins to index files. It will index and index, but then just die. Fortunately, there's a very helpful Code42 support doc here. Check each service.log.# file in /Library/Logs/CrashPlan. Search the document for "OutOfMemoryError" and if you find the phrase, you'll want to increase the default amount of RAM Crashplan is provided.
The Code42 doc spells it out quite well, but you'll want to:
Stop Crashplan using sudo launchctl unload /Library/LaunchDaemons/com.crashplan.engine.plist in Terminal.
Authenticate with your Admin password
Use the following command to open the .plist file for editing sudo nano /Library/LaunchDaemons/com.crashplan.engine.plist
Arrow down to the line that says -Xmx1024m and replace it with a larger number, perhaps 2048.
Press Control + X to exit, Y to save changes and enter to write the filename.
Then Start Crashplan again using sudo launchctl load /Library/LaunchDaemons/com.crashplan.engine.plist
Crashplan should then open back up again as normal and do its thing. Easy.