Full Weekly and Differential Daily Backup Strategy
Answer
Correct answer: C — Full weekly with daily differentials restores from just two sets, cutting recovery time while keeping storage far below a nightly full backup.
An organization wants to minimize the recovery time from backups in case of a disaster. Backups must be retained for one month, while minimizing the storage space used for backups. Which of the following is the best approach for a backup strategy?
Community Votes
46% of anonymous learners picked answer C. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
A differential captures everything changed since the last full, so a restore needs only the last full plus the newest differential, while an incremental schedule must replay the full plus every incremental in order.
The organization wants the shortest restore while keeping a month of retention and limiting the storage consumed. A weekly full backup with daily differentials restores from only two media sets and keeps well inside the one-month retention rule without paying for a nightly full.
Choosing full weekly with incremental daily because incremental jobs are smaller. Incremental saves the most space but produces the longest restore, and the stem puts recovery time ahead of storage.
Community Discussion (20 comments)
johnabayot
👍 10
Selected: C
The best approach for a backup strategy is C. Full weekly and differential daily. This option will minimize the recovery time, as you only need to restore the latest the latest full backup and latest differential backup to get the most recent data. It will also minimize the storage space, as differential backups only store the changes made since the last full backup, unlike incremental backups that store the changes made since the last backup of any type.
cantbeme
👍 6
Selected: A
The most suitable approach for balancing recovery time and minimizing storage space, given the requirement to retain backups for one month, is a combination of full, incremental, and differential backups.
scholarbust
👍 2
hi moderator
Geronemo
👍 4
Selected: B
Here's why: Full weekly backups: Performing full backups on a weekly basis ensures that a complete copy of all data is captured regularly. This allows for efficient restoration of data in case of a disaster, as the most recent full backup serves as a baseline for recovery. Incremental daily backups: Incremental backups capture only the changes made since the last backup, typically on a daily basis. By performing incremental backups daily, the organization can minimize the amount of data backed up each day, reducing storage space usage and backup duration. Incremental backups also enable faster recovery by minimizing the amount of data that needs to be restored during a recovery operation.
BD69
👍 2
Selected: C
any time you see "minimize recovery time", any answer with differential will be wrong. any time you see "minimize storage space" or "minimize backup time or bandwidth", look for an answer with incremental. While incremental backups are cost-efficient, it can time-consuming and complex to restore data. It requires the first full backup and all subsequent incremental backups to restore data. For example, a crash on Wednesday would require you to go through all backups from Sunday to Tuesday, identify changes, and restore them cumulatively. The process gets more complex as time from the last full backup increases.
Darewalex
👍 1
B is the answer according to Chat gpt By combining full backups (performed weekly) with incremental backups (performed daily), you can achieve the following benefits: Minimize recovery time: Full backups provide a complete copy of the data, making it faster to restore in case of a disaster. Incremental backups capture changes made since the last backup, allowing for a more granular recovery process. Retain backups for one month: By rotating full backups weekly and retaining incremental backups for the entire month, you ensure that you have backups available for recovery within the required time frame. Minimize storage space: Incremental backups only store changes made since the last backup, reducing storage space requirements compared to performing full backups daily. This approach balances the need for efficient use of storage space with the requirement for quick recovery in case of a disaster.
TM78
👍 3
Full backup: takes the longest to perform (because all data is being backed up) but data can be restored in one session (easiest) Incremental: fastest backup compared to full or differential | BUT incremental takes the longest when you need to restore the data | (backs up data that has been changes since the last full or incremental backup) Differential: backup is faster than full but slower than incremental | restores data faster than incremental | (backs up the data that has been changed since the last full backup) So, when you see questions that ask for ‘fastest restore time’ or ‘minimize recovery time’, it will be differential.
JmyKing
👍 4
Selected: B
I'm going with B Please watch this video (https://www.youtube.com/watch?v=o-83E6levzM) You will understand everything better and you will not be confuse with all these comments that says B isn't the correct answer.
subaie503
👍 2
Selected: B
C would be correct if it was a full back + differential WEEKLY. Since it's daily the correct answer is B because incrementals backup since the last incremental backup, and differentials backup since the next full backup.
qwes333
👍 3
Selected: C
The focus of the question is "MINIMIZE recovery time" over the storage space. So C. is the right answer because if you have to restore something from Thursday thanks to the Differential you will take less time than the Incremental. Weekly Full is a must.
TM78
👍 2
Selected: B
B. Full weekly and incremental daily. Incremental - only the recent changes are backed up, consuming less storage space.
CaNe2o1
👍 4
Selected: C
You guys are the main purpose of this: "An organization wants to minimize the recovery time from backups" Recovering From A would take longer than C.
Benrosan
👍 1
Selected: A
We can rule out C, since differential backups take up more space than incremental ones and storage space is the main concern. I'd go A based on the wording in the question.
zecomeia_007
👍 1
Selected: A
A because is more fast recovery
Yomzie
👍 2
"Backups must be retained for one month..." means, you must run a FULL backup once every month. Every other requirement is secondary. Option A is your answer.
dfc6822
👍 1
The best approach for a backup strategy that minimizes recovery time from backups, retains backups for one month, and minimizes storage space usage is: B. Full weekly and incremental daily
f8ecb59
👍 1
Differential uses less storage. My vote C
Hs1208
👍 4
Selected: B
B. Full weekly and incremental daily : Incremental backups capture only the changes made since the last backup, reducing the amount of data that needs to be stored and transferred.
maggie22
👍 4
Selected: C
Only C is the best approach for backup strategy. Regular differential data backups take more space than cumulative incremental backups, so organizations must set sensible backup retention policies to avoid storage space issues. And also it only takes less time to restore the data.
psowrong
👍 3
Selected: B
Full weekly backups: Performing a full backup once a week ensures a comprehensive copy of all data is stored. This serves as a baseline for recovery. Incremental daily backups: Incremental backups capture only the changes made since the last backup (whether it's a full or incremental backup). By doing incremental backups daily, the organization captures and stores only the changes made since the last backup, minimizing the amount of data transferred and stored.
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Expert Analysis
Why the Answer Is Correct
A differential backup captures everything changed since the last full backup, so restoring means applying only the last full and the most recent differential. That two-step restore is the shortest recovery time available short of a full backup every night, and a weekly full still gives four restore points inside the one-month retention window. Storage stays under control because only one full copy is written per week instead of one per day.Why the Other Options Are Wrong
Full weekly with incremental daily uses the least space of the realistic combinations, but a restore has to replay the last full plus every daily incremental in sequence, which is the slowest recovery and fails the stated priority. Full daily gives the fastest restore possible but multiplies storage far beyond what the requirement allows. Full monthly with incremental daily and differential weekly mixes two changed-data methods in one schedule, producing redundant copies and the slow incremental restore while still using more space than needed.Community Comment Notes
The thread splits mainly between full weekly with incremental daily and full weekly with differential daily, with the recovery-time wording deciding it for most. Several commenters summarise the trade-off correctly: incremental is shortest to write and longest to restore, differential is the reverse, and full is longest to write and shortest to restore. Others argue that differentials consume more space, which is true, but the stem lists recovery time as the objective and treats storage as a secondary constraint.Official Reference
Exam Strategy
Decide what the stem asks for first: minimize recovery time points to differential, while minimize space or backup window points to incremental. Then check that a full backup anchors the schedule and that retention is met.
Frequently Asked Questions
How many backups must be applied to restore from a weekly full plus daily differential schedule?
Two: the most recent full backup and the most recent differential taken after it. The differential holds every change since that full, so earlier differentials in the same week are not needed.
When should incremental backups be chosen instead of differential ones?
Choose incremental when the constraint is storage space, backup window, or bandwidth, because each job copies only what changed since the last job; a restore replays the full plus every incremental.