In this ASR FAQ#4 it says, "Overall storage cost is, based on replica of storage and the number of disaster recovery drills conducted in a year., why "in a year" ?

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In this ASR FAQ#4 it says, "Overall storage cost is, based on replica of storage and the number of disaster recovery drills conducted in a year., why "in a year" ?

Peter Thurwachter (MINDTREE LIMITED) 621

Hello Azure Site Recovery experts,

May I please receive clarification on these 2 below points?

In the 4th FAQ at the bottom of the ASR pricing page: https://azure.microsoft.com/en-us/pricing/details/site-recovery/

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FAQ 4 Question
What charges do I incur while using Azure Site Recovery?
When you use Site Recovery, you incur charges for the Site Recovery license, Azure storage, storage transactions and outbound data transfer.

FAQ 4 Answer 2:
Storage cost is incurred for the Site Recovery replica of storage in the target location. A snapshot taken on this replica storage is used to create a new target storage disk upon test failover or failover. Overall storage cost is, therefore, based on replica of storage and the number of disaster recovery drills conducted in a year.

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Question1:
I found this “Tutorial：Run a disaster recovery drill for Azure VMs” https://learn.microsoft.com/en-us/azure/site-recovery/azure-to-azure-tutorial-dr-drill and since a snapshot is taken when a test failover or failover is done to create a new target storage disk, this part makes sense to me. BUT why is this "in a year". Are these snapshots only retained for 365 days?

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FAQ 4 Answer 5:
Recovery points created by Site Recovery are snapshots taken for the replica storage. These snapshots are charged based on the consumed capacity. For more information, see Managed Disks pricing.

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Question2:
*This relates to above "FAQ 4 Answer 2"
“A snapshot taken on this replica storage is used to create a new target storage disk upon test failover or failover.”

So there exists the "replica storage" (A) which is already generating storage costs. Then upon failover, a snapshot "of" the replica storage is used to create
"A new target storage disk" (B) Thus, after failover / test failover, there are now 2 storage elements generating cost, yes?

Thank you for your time and expertise,
Peter

Peter Thurwachter (MINDTREE LIMITED) 621 Reputation points

2021-08-24T14:01:46.42+00:00

@SadiqhAhmed-MSFT
Thank you for your response.

Do you have any insight into the first question?

"Overall storage cost is, therefore, based on replica of storage and the number of disaster recovery drills conducted in a year."

Is there a reason why it is "a year"?

Thank you in advance
SadiqhAhmed-MSFT 49,331 Reputation points Microsoft Employee Moderator

2021-08-25T10:32:18.453+00:00

@Peter Thurwachter (MINDTREE LIMITED) - The storage bill will be created on a monthly basis. That’s why it is mentioned ‘over a year’. These retention points are not maintained for 365 days. It will only be retained for the time defined in the Replication Policy. Max possible retention period is 72 hours for now.

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Peter Thurwachter (MINDTREE LIMITED) 621 Reputation points

2021-08-24T14:01:46.42+00:00

@SadiqhAhmed-MSFT
Thank you for your response.

Do you have any insight into the first question?

"Overall storage cost is, therefore, based on replica of storage and the number of disaster recovery drills conducted in a year."

Is there a reason why it is "a year"?

Thank you in advance
SadiqhAhmed-MSFT 49,331 Reputation points Microsoft Employee Moderator

2021-08-25T10:32:18.453+00:00

@Peter Thurwachter (MINDTREE LIMITED) - The storage bill will be created on a monthly basis. That’s why it is mentioned ‘over a year’. These retention points are not maintained for 365 days. It will only be retained for the time defined in the Replication Policy. Max possible retention period is 72 hours for now.

Answer 1

@Peter Thurwachter (MINDTREE LIMITED) - Thank you for your post and I apologize for the delayed response!

That’s correct. Upon failover, both these disks will be present. But as soon as you perform a ‘Commit’ action after failover, then the replica disk is cleaned up. So, both the disks will co-exist for a very short amount of time and then replica will be removed as soon as ‘Commit’ is performed.

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In this ASR FAQ#4 it says, "Overall storage cost is, based on replica of storage and the **number of disaster recovery drills conducted in a year.**, why "in a year" ?

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