October 2017
Intermediate to advanced
340 pages
9h 46m
English
Content preview from Learning Ceph - Second Edition
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Power requirements-amps, volts, and outlets
In the US, standard outlets are 110-120V, 60 Hz, with NEMA 5-15 plugs, rated at ~ 1,875 watts. Other parts of the world use different standards, but the ideas apply. Many (but by no means all) small to medium and even large data centers and server installations use the local common standard. Servers today often incorporate power supplies that can handle a range of input voltages and frequencies, requiring only a localized power cable to adapt to the proper plug/socket type.
Some larger storage appliances, disk arrays, and even certain dense servers, however, may require (US) 240V power that may not be readily available in your data center. Even servers that accept conventional power may pull so ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.