After reading this week\'s materials, please respond to TWO of the following que
ID: 3819469 • Letter: A
Question
After reading this week's materials, please respond to TWO of the following questions. CITATION IN APA
1. Compare mean time between repair (MTTR) and mean time between failures (MTBF). Why can more components actually mean less reliability?
2. Define the full, incremental, and differential backups and describe the differences between these data backup types.
3. Describe the differences between disk shadowing, electronic vaulting, and remote journaling. What is disk duplexing and how does it differ from disk mirroring?
4. Describe the different methods of RAID. What is MAID? What is RAIT?
Explanation / Answer
1)Mean Time Between Failures:
It is a measurement of an average time takes from one failure to other.
Mean Time To Repair:
It is the average time that takes to repair after a failure.
Mean Time Between Failures = (Total up time) / (number of breakdowns)
Mean Time To Repair = (Total down time) / (number of breakdowns)
2)
Type
Definition
Benefits
Drawbacks
Full Backup:
Full backup is nothing but complete backup.
Fast in Restoration
The backup process is very slow. An also it needs
High storage.
Differential Backup:
This type of backup which files have changed since last full backup. In this type for restoring all the data, only need the the last full backup, and the last differential backup.
It is Faster tocreate and Restoration.
By comparing Restoration is slower than full backup.
Incremental Backup:
This type creates copies of all the files that have changed since previous backups of any type.
Fastest when creating a backup.
Needs least storage space.
Restoring from incremental backups is the slowest.
Type
Definition
Benefits
Drawbacks
Full Backup:
Full backup is nothing but complete backup.
Fast in Restoration
The backup process is very slow. An also it needs
High storage.
Differential Backup:
This type of backup which files have changed since last full backup. In this type for restoring all the data, only need the the last full backup, and the last differential backup.
It is Faster tocreate and Restoration.
By comparing Restoration is slower than full backup.
Incremental Backup:
This type creates copies of all the files that have changed since previous backups of any type.
Fastest when creating a backup.
Needs least storage space.
Restoring from incremental backups is the slowest.