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Server+ Certification Training Guide by Server+ Certified Technician Elton Jernigan

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7.0—Disaster Recovery

This job dimension deals with the planning and implementation of a disaster-recovery process and is the topic of 12% of the exam questions. The main points follow:

  • Disaster recovery is a set of activities that are designed to reduce the likelihood, duration, and impact of a disaster.

  • To reduce the likelihood of a disaster striking a network server, use redundant hardware in the network server.

  • Redundancy for hard disk drives is accomplished by implementing RAID (redundant array of inexpensive disks).

  • RAID 1 (mirroring or duplexing) provides redundancy by duplicating all data on pairs of disk drives.

  • RAID 5 (striped set with parity) provides redundancy by calculating parity information for each block of data written to the disks ...

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