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Thursday, March 12 • 1:40pm - 2:30pm
Cache Tiers and Erasure Coding in Ceph - Samuel Just, Red Hat

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Ceph is designed around the assumption that all components of the system (disks, hosts, networks) can fail, and has traditionally leveraged replication to provide data durability and reliability. The CRUSH placement algorithm is used to allow failure domains to be defined across hosts, racks, rows, or datacenters, depending on the deployment scale and requirements. Ceph has introduced a storage tiering infrastructure and cache pools that allow alternate hardware backends (like high-end flash) to be leveraged for active data sets while cold data is transparently migrated to slower backends. The combination of these two features enables a surprisingly broad range of new applications and deployment configurations. This talk will cover a few Ceph fundamentals, discuss the new tiering and erasure coding features, and then discuss a variety of ways that the new capabilities can be leveraged.

Speakers
SJ

Samuel Just

Red Hat
I work at Red Hat as the core team PTL for the ceph project. My work focuses on scalability and performance in the ceph rados layer. I spoke at Vault 2015.


Thursday March 12, 2015 1:40pm - 2:30pm
Loft 2