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Exam AZ-301 topic 4 question 2 discussion

Actual exam question from Microsoft's AZ-301

Question #: 2
Topic #: 4

You plan to use Azure Site Recovery to protect several on-premises physical server workloads. Each server workload is independent of the other. The workloads are stateless.
You need to recommend a failover strategy to ensure that if the on-premises data center fails, the workloads are available in Azure as quickly as possible.
Which failover strategy should you include in the recommendation?

A. Latest
B. Latest app-consistent
C. Latest multi-VM processed
D. Latest processed

Show Suggested Answer

Suggested Answer: D 🗳️
References:
https://docs.microsoft.com/en-us/azure/site-recovery/site-recovery-failover

by onlyfunmails at Jan. 3, 2020, 1:14 p.m.

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onlyfunmails

Highly Voted 5 years, 5 months ago

INDEPENDENT VMs ================= Latest - Low RPO (may not app-consistent) Latest Processed - Low RTO Latest app-consistent - app-consistent, DEPENDENT VMs =============== Latest multi-VM processed - same as Latest Processed Latest multi-VM app-consistent - same as Latest app-consistent

upvoted 22 times

Famous_Guy

5 years, 2 months ago

Latest processed:::: Use this option to fail over VMs to the latest recovery point already processed by Site Recovery. You can see the latest processed recovery point in the VM Latest Recovery Points. This option provides a low RTO as no time is spent to processing the unprocessed data

upvoted 9 times

tartar

4 years, 9 months ago

D is ok

upvoted 2 times

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[Removed]

Highly Voted 4 years, 11 months ago

Requirements: - Each server workload is independent of the other - Workloads are stateless - Failover as quickly as possible A. Latest > Provides the lowest RPO B. Latest app-consistent > There are no hints, that app-consistent recovery points have been enabled. So I guess it can be ruled out. C. Latest multi-VM processed > The requirements say "workloads are independent of each other". Also there is no hint that multi-VM consistency got enabled. I guess this can be ruled out D. Latest processed > Provdes a low RTO because no time is spent processing unprocessed data Conclusion: > As the workloads are stateless, there is no need to waste time on recovering the exact state of the VM. So answer D) is sufficient and should be even faster than A)

upvoted 14 times

Test_Taker

4 years, 10 months ago

A (Latest) has the lowest RPO (as you mentioned), but also would not be processing any data either because the app is stateless. Seems like the correct answer is "A."

upvoted 1 times

Test_Taker_1

4 years, 10 months ago

Self correcting a bit.... Looking further, it might be trying to trip you up. I could read that as multiple VMs in which case the correct answer would be "Latest multi-VM Processed". If it's a single VM, then the answer would be "Latest Processed" It would not be "Latest" as i initially thought because, Site Recovery will first create a recovery point and then do the fail over. Because these are stateless, there is no need. https://docs.microsoft.com/en-us/azure/site-recovery/site-recovery-test-failover-to-azure

upvoted 1 times

Gianlucag77

4 years, 10 months ago

the right answer is "latest processed" please read the link below: "Please note that when the source region goes down, there is no more log processing possible. So, you will have to failover to Latest Processed recovery point. See the next point to understand more." https://docs.microsoft.com/en-us/azure/site-recovery/site-recovery-failover#run-a-failover

upvoted 1 times

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AKumar

Most Recent 4 years, 3 months ago

RTO is how quickly the applications will be online in the secondary site, and RPO is how much data loss would occur in the event of a failover. So based on the requirement, Latest Processed is correct as it has low RTO.

upvoted 1 times

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glam

4 years, 4 months ago

D. Latest processed

upvoted 1 times

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sanketshah

4 years, 5 months ago

D is correct answer.

upvoted 1 times

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Afz

4 years, 9 months ago

Even though I would lean towards D ie latest processed owing to "Statelessness and lowest RTO (ie the workloads are available in Azure as quickly as possible)". For D to work, following assumption has to be made for which there is no clarity in the question: There had not been any updates (apps, OS, data, other binaries) to the VM after the "latest processed".

upvoted 1 times

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elphynomenon

4 years, 12 months ago

STATELESS and FASTEST are the major key here. I think the correct answer is A.

upvoted 1 times

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superbutt

5 years ago

The correct answer is D.

upvoted 2 times

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akamal

5 years ago

Answer is correct: Note that as per this link: https://docs.microsoft.com/en-us/azure/site-recovery/site-recovery-failover Please note that when the source region goes down, there is no more log processing possible. So, you will have to failover to Latest Processed recovery point. See the next point to understand more. And this is exactly the scenario mention here

upvoted 2 times

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rwrogers11

5 years, 1 month ago

Latest provides the lowest RPO, but since the question said fastest time, then Latest Processed would be best, as it has the lowest RTO which is Recovery Time Objective.

upvoted 1 times

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Daren

5 years, 2 months ago

Given answer is correct. TRO= how quickly you want your data back? RTO= how much data you afford loosing.

upvoted 2 times

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yogi2020

5 years, 4 months ago

Answer D is correct, The question is really asking for shorted RTO, which is provided by option D. Latest processed: Use this option to fail over VMs to the latest recovery point already processed by Site Recovery. You can see the latest processed recovery point in the VM Latest Recovery Points. This option provides a low RTO as no time is spent to processing the unprocessed data

upvoted 6 times

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bolbol

5 years, 4 months ago

why not Latest ?? as the question said as quickly as possible and the Latest has the lowest RPO ?

upvoted 1 times

bolbol

5 years, 4 months ago

ignore my comment ! given answer is correct

upvoted 1 times

bootyholeman

5 years, 4 months ago

Latest - the lowest RPO, the app is STATELESS - no other option would make sense because it's STATELESS - no data can be lost because there is no STATE.

upvoted 5 times

dtvAzh

5 years ago

https://docs.microsoft.com/en-us/azure/site-recovery/failover-failback-overview#recovery-point-options. Please refer yogi2020's comments. The answer provided is correct.

upvoted 1 times

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