课程: ISC2 Certified Information Systems Security Professional (CISSP) (2024) Cert Prep

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High availability and fault tolerance

High availability and fault tolerance

课程: ISC2 Certified Information Systems Security Professional (CISSP) (2024) Cert Prep

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High availability and fault tolerance

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- [Instructor] We've already discussed some of the ways that security professionals can ensure the continued operation of systems. Let's dig into this in a little more detail. There are two key technical concepts that improve the availability of systems. High availability, otherwise known as HA, uses multiple systems to protect against failures. HA techniques are like the ones we discussed in the previous video, having a cluster of web servers in place that can continue to operate even if a single server fails is one example. Another is using a pair of firewalls with one designated as the backup. The core concept of high availability is having operationally redundant systems, sometimes at different sites. The geographic dispersal of placing systems in different locations protects you against damage to a facility. Fault tolerance, or FT, helps protect a single system from failing in the first place, by making it resilient in the face of technical failures. And one quick note, load…

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