27. Goodbye Truck Rolls

One consequence of server virtualization and the build out of massive data centers and clouds is a shift in how companies deploy new servers and how they upgrade existing servers when they need replacing. Referred to as a truck roll (because building a new data center meant you had a bunch of delivery trucks that were heading your way), the build out of cloud data centers and networks changed in some profound ways—both in scale and design philosophy. These changes have also driven new ideas about repairing or replacing servers and networking devices. This chapter provides an overview of both.

Software-defined networking (SDN) and network functions virtualization (NFV) also change things, because network upgrades and truck ...

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