Elliptics uses replication to ensure data availability form the beginning of its design. To use replication features, a group of servers are bound together by admin and make the replications every time. For the implementation of the logging, it's using the blackhole logging library for writing logs. The blackhole library is an attribute-based logger with maximum performance optimization. Elliptics uses blackhole library and can output to File/Syslog/Socket.
http://reverbrain.com/elliptics/
https://github.com/reverbrain/elliptics
http://doc.reverbrain.com/elliptics:elliptics
Reverbrain
2009