March 2019
Intermediate to advanced
356 pages
10h 7m
English
Content preview from Mastering Ceph - Second Edition
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Power supplies
Servers can be configured with either single or dual redundant power supplies. Traditional workloads normally demand dual power supplies to protect against downtime in the case of a power supply or feed failure. If your Ceph cluster is large enough, then you may be able to look into the possibility of running single PSUs in your OSD nodes and allow Ceph to provide the availability in case of a power failure. Consideration should be given to the benefits of running a single power supply versus the worst-case situation where an entire power feed goes offline at a DC.
If your Ceph nodes are using RAID controllers with a write back cache, then they should be protected either via a battery or flash backup device. In the case of ...
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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.