SDN has become the center of the "software-defined data center (SDDC)" category, and it is based on three important foundations: programmability, software-defined servers, networking and storage.
Five important issues that should be considered before building an SDDC:
1. Power is the top priority. The indicators used to define the success of SDDC become much like the cloud provider's metrics, that is, the greater the power consumption, the higher the cost, and the cost savings of power supply will become the main selection criteria for traditional suppliers.
2. Management complexity is greatly reduced. If implemented properly, SDN will help reduce the original complexity of traditional data centers.
3. Software Stability: The ability of some Web giants in the industry to use free and open source software is amazing. But be aware that these super companies have a large number of developers who support open source software. But for companies that don't have the resources or large software development teams, enterprise applications must be built on reliable, vendor-supported solutions, and they are also keeping an eye on open source solutions, and they are likely to mature and become Feasible solution.
4. If you can't measure it, it's equal to unmanageable. CIOs should ask themselves three questions: "How SDN fits into my network infrastructure," "Is there some network diagnostic tools available now?", "How to cross virtual and physical networks in diagnostics."
5. Integrate management between OVN and physical network: As long as virtualization is applied, we can't easily trace the root cause of the problem, so performance problems may be difficult to find. Integrated network management tools become very important, reducing the diagnostic difficulty of the root cause of network problems.
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