October 2017
Intermediate to advanced
340 pages
9h 46m
English
Content preview from Learning Ceph - Second Edition
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Erasure Coding
Erasure Coding (EC) is a strategy by which one can realize a more favorable ratio of raw to usable storage capacity as well as potentially greater fault tolerance. The downsides are greater complexity, more computation, and potentially increased time to recover from failures. Depending on the EC parameters chosen, hardware, and workload, performance may be impacted as well.
Ceph has supported EC for RGW object storage pools for some time; new with the Kraken release and mature with the Luminous LTS release is support for RBD block storage pools as well, now that partial overwrites have been improved for significant write performance gains. As the latter is relatively new and production adoption in the community is tentative, ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.