Cache tier and erasure coding FAQ


This document answers FAQs about cache tiering and erasure coding in Ceph software-defined storage. These capabilities deliver new levels of flexibility and cost advantages for enterprises managing data-intensive applications. Cache tiering enables companies to move “hot” data to high-performance media when it becomes active and “cold” data to low-performance media when it is no longer active. Erasure coding supports archive and cold storage use cases by reducing the cost per gig.