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Learning Ceph - Second Edition by Karan Singh, Vaibhav Bhembre, Anthony D'Atri

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Controllers

Today's servers utilize controllers to connect storage drives, networks, and other technologies we used to call peripherals. These are often separate add-in cards utilizing PCI-e or other standards, though some server motherboards and chassis may offer built-in choices as well. Built-in controllers are convenient but may offer modest capacities and performance. They also are less readily upgraded to exploit technology improvements.

In this section, we will explore a number of choices for your Ceph servers' controllers.

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