Webinar with Dan van der Ster
Ceph data placement is a simple yet nuanced subject. Using its secret sauce "CRUSH", Ceph empowers organizations to easily implement complex data placement policies to maximize the reliability of the storage infrastructure. However, CRUSH is not perfect -- imbalances lead to costly space inefficiencies. To fix this, Ceph introduced the upmap balancer several releases ago. The internal mechanism upmap created a new opportunity in Ceph -- arbitrary data placement to enable new and extremely powerful cluster maintenance operations. In this webinar, Dan will describe "how it works" internally, and present practical "just like magic" tools to simplify complex Ceph maintenance tasks.