The ABC company is considering the following options for its backup plan: 1. Dai
ID: 2354243 • Letter: T
Question
The ABC company is considering the following options for its backup plan: 1. Daily full backups Time to perform backup = 60 minutes Size of backup = 50 GB Time to restore from backup = 30 minutes 2. Weekly full backups plus daily incremental backup Same requirements as option 1 to do a fully backup on Friday plus TIme to perform daily backup = 10 minutes Size of daily backup = 10 GB Time to restore each daily backup file = 5 minutes 3. Weekly full backups plus daily differential backup: Same requirements as option 1 to do a full backup on Friday plus Time to perform daily backup = 10 minutes first day, growing by 5 minutes each day therefater Size of daily backup = 10 GB first day, growing by 10 GB each day Time to restore differential backup file = 5 minutes first day, increasing by 2 minutes each subsequent day Which approach would you recommend? Why?Explanation / Answer
Solution: Management must weigh the trade-offs shown below.
Full daily backups take the most time to perform and require most storage, but in the event of a disaster have the quickest restore time.
Daily incremental backups on average take less time and use less storage than daily differential backups, but restoration is faster for the differential backups.
Type of Backup Plan
Time spent weekly to backup
Storage requirements
Time to Restore
Option 1: Full Daily Backup
300 Minutes (5 days * 60 minutes)
250 GB (5 days * 50 GB/day)
30 Minutes to restore most recent full backup
Total
300 Minutes
250 GB
30 Minutes
Option 2: weekly full backup plus daily incremental backup
Full Weekly Backup on Friday
60 Minutes
50 GB
30 Minutes to restore last full backup
Daily Incremental Backup
40 Minutes (4 days * 10 minutes/day)
40 GB (4 days * 10 GB/day)
5- 20 Minutes (5 minutes per day since last full backup)
Total
100 Minutes
90 GB
35-50 Minutes
Option 3: weekly full backup plus daily differential backup
Full Weekly Backup
60 Minutes
50 GB
30 Minutes to restore last full backup
Daily Differential Backup
70 Minutes (10 minutes first day, increasing by 5 minutes/day
Type of Backup Plan
Time spent weekly to backup
Storage requirements
Time to Restore
Option 1: Full Daily Backup
300 Minutes (5 days * 60 minutes)
250 GB (5 days * 50 GB/day)
30 Minutes to restore most recent full backup
Total
300 Minutes
250 GB
30 Minutes
Option 2: weekly full backup plus daily incremental backup
Full Weekly Backup on Friday
60 Minutes
50 GB
30 Minutes to restore last full backup
Daily Incremental Backup
40 Minutes (4 days * 10 minutes/day)
40 GB (4 days * 10 GB/day)
5- 20 Minutes (5 minutes per day since last full backup)
Total
100 Minutes
90 GB
35-50 Minutes
Option 3: weekly full backup plus daily differential backup
Full Weekly Backup
60 Minutes
50 GB
30 Minutes to restore last full backup
Daily Differential Backup
70 Minutes (10 minutes first day, increasing by 5 minutes/day
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