Chapter 11 Flashcards
Business Continuity and Computer Support (60 cards)
What is Business Continuity?
Trying to prevent problems and preparing for when there is a hardware failure or software loss
What are the 2 major categories of business Continuity?
Fault tolerance
Disaster recovery
What are the areas that fall underl fault tolerance?
Replication
Redundancy
Backups
Contingency planning
When looking at disaster recory what is being considered?
Restoring data
Access based on predefined priorities
What is fault tolerance?
The ability to lose a component or data and still have a functional system
What is tolerance?
How much risk you are willing to take
What is a contingency plan?
A plan of action in the event of a problem
List the steps to take to create a contingency plan
1 perform a business impact analysis 2 identify preventive systems 3 develop a recovery plan 4 test the recovery plan 5 set up a maintain and review schedule 6 implement training
What is replication?
A full working copy of whatever data, computer or network that’s being considered
What are hot sites
Entire replicated networks
What is the down side of replication?
It is the most expensive of the fault tolerant options
What is redundancy?
Where there are devices in place to help keep things running normally for a short period of time until the original problem can be fixed
What can redundancy be implemented on?
Data
Networks
Power sources
How can you add additional hard drives to a computer and get benefits beyond increased storage like your disk read/write faster and create fault tolerance by having extra protection against disk failure
Implement RAID
What does RAID stand for?
Redundant Array of Independent disks
Explain RAID
Multiple physical hard disks working together as a team for increased performance, reliability or both
How many different implementation of RAID can there be?
10
What are the 3 more popular versions of RAID?
RAID 0
RAID 1
RAID 5
What is the other name for RAID 0?
Disk stripping
What happens in RAID 0?
At least 2 drives are combined to create one logical volume
Data written across the volume like a stripe
In RAID 0 if one of the drives fail what happens?
All contents are lost
Which of the RAID is not RAID in every sense of the word?
RAID 0
What is the other name for RAID 1?
Disk mirroring
How does RAID1 produce fault tolerance?
By writing the same data simultaneously to two separate drives