ch 14 Flashcards
An organization’s ability to maintain operations after a disruptive event
• Business Continuity
• (B C P)
Business Continuity Planning
Identifying exposure to threats
Creating preventative and recovery procedures
Testing them to determine if they are sufficient
• (B C P) Business Continuity Planning
• (B I A)
Business Impact Analysis
Identifies business functions and quantifies the impact a loss of these functions may have on business operations
• (B I A) Business Impact Analysis
A (B I A) will help determine
the mission-essential function
Activity that serves as the core purpose of the enterprise
mission-essential function
That support the mission-essential function
The identification of critical system
Which is a component or entity in a system which will disable the entire system, should it no longer function
Single-point-of-failure (SPOF)
(SPOF)
Single-point-of-failure
- Used to identify and mitigate privacy risks
Privacy impact assessment
Can determine if a system contains personally identifiable information (P I I)
Privacy threshold assessment
• (D R P)
Disaster Recovery Plan
Focuses on protecting and restoring information technology functions
• (D R P) Disaster Recovery Plan
Intended to be a detailed document that is updated regularly
Comprehensive in scope
what is the typical outline of a DRP
Unit 1: Purpose and Scope Unit 2: Recovery Team Unit 3: Preparing for a Disaster Unit 4: Emergency Procedures Unit 5: Restoration Procedures
Sequence in restoring systems
(order of restoration)
the process of resynchronizing data back to the primary location
Failback
Disaster exercise objectives
Test efficiency of interdepartmental planning and coordination in managing a disaster
Test current D R P procedures
Determine response strengths and weaknesses
Simulate an emergency situation but in an informal and stress-free environment
Tabletop exercises
To analyze the exercise results to identify strengths to be maintained and weaknesses to improve upon
An after-action report
Refers to a system’s ability to deal with malfunctions
Fault tolerance
Which is the use of duplicated equipment to improve the availability of a system
A goal is to reduce a variable known as the mean time to recovery (M T T R)
Redundancy
(M T T R)
Mean time to recovery
The average amount of time that it will take a device to recover from a failure that is not a terminal failure
Mean time to recovery (M T T R)
Play a key role in network infrastructure
Failure can have significant business impact
• Servers
Combining two or more devices to appear as a single unit
Clustering
Multiple servers that appear as a single server
Connected through public and private cluster connections
Server cluster
one server is doing all the work, the other server is on stand-by)
Asymmetric
(both servers are working the same amount of work)
Symmetric
(M T B F)
Mean time between failures
Measures average time until a component fails and must be replaced
Can be used to determine number of spare hard drives an organization should keep
Mean time between failures (M T B F)
(R A I D)
Redundant Array of Independent Devices
Uses multiple hard disk drives to increase reliability and performance
Can be implemented through software or hardware
Redundant Array of Independent Devices (R A I D)