Backup Techniques

Question 1

Full Backups

Answer 1

Is a full copy of entire data set. Rewrites all previous data plus rewrites all new information. Has one data set

Question 2

Pros Full Backups

Answer 2

• Provides best protection
• Fast and easy to manage as entire list is in one data set
• Easy to maintain and restore different versions

Question 3

Cons Full Backups

Answer 3

-Takes a long time
-Is intrusive on network
-Consumes the most storage space
-The exact same files are stored repeatedly

Question 4

Differential Backups

Answer 4

Copies only needed and changed data since the last full backup

Question 5

Advantages Differential Backups

Answer 5

• Process is quicker than a full backup since it only takes a copy of what has changed not the full set of data
• The backup copy itself takes far less storage space than when a full copy is everyday
• Faster Restores than incremental backups

Question 5

Disadvantages Differential Backups

Answer 5

• The size of differences grow each cycle, if the cycle is long at the end of the size of the archive it might be big and the process is quite lengthy

-Not as efficient use of storage space as compared to incremental backups

-Restores are slower than with full backups

Question 6

Incremental backups:

Answer 6

Backups in which successive copies of the data contain since last backup

Question 7

Pros of incremental back ups

Answer 7

• The backup is differential system not to mention the full backup
• Each iteration of the backup job copies just the data that was changed
• This means less storage taken by backing up

Question 8

Disadvantage