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

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Adapter slots

Servers today often offer a wealth of built-in resources:

  • Network interfaces
  • Management interfaces
  • Storage controllers
  • Keyboard / video / mouse (KVM)
  • Multi-purpose USB ports

Chances are that you will need to add additional network and storage controllers for bonding or because embedded interfaces may only be 1 Gb/s. Depending on your server model, these may take the form of:

  • Standard PCI-e cards
  • Custom mezzanine cards that do not consume a PCI slot
  • Proprietary LAN On Board (LOM) modules

With Ceph systems—especially OSD servers—it is common to need to add as many as four network interfaces and at least one storage adapter, easily consuming three PCI-e slots. Carefully examine your server model diagrams and spec sheets to ...

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