What's the exact SLA's for Azure Backup with LRS, ZRS and GRS? MS official SLA site is showing 99.9 - so is that for all?

Thiago Pfiffner 0 Reputation points
2021-09-01T14:59:38.943+00:00

What's the exact SLA's for Azure Backup with LRS, ZRS and GRS? MS official SLA site is showing 99.9 - so is that for all?
It makes absolutely no sense that it's the same SLA for all. So does someone know why Microsoft is only writing 99.9 and not making a difference of what kind of Location Service (LRS, ZRS, GRS)?

Azure Backup
Azure Backup
An Azure backup service that provides built-in management at scale.
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  1. SadiqhAhmed-MSFT 38,081 Reputation points Microsoft Employee
    2021-09-02T09:11:30.627+00:00

    anonymous user - Thank you for your post!

    The 99.9% today is the service availability guarantee of Azure Backup (for the abilities to backup and restore data), while the backup data itself in LRS/GRS/ZRS have availability guarantees provided by Azure Storage (where Azure Backup stores backup data).

    To answer your question, Azure Backup as a service provides guarantee for the services offered, while the backup data in LRS/GRS/ZRS are offered different availability levels by the underlying Storage capabilities. The overall solution availability would be a multiplication both these availabilities. For example, if a customer were to use their own application (or a 3rd party application) to backup and use Azure Blob storage, their overall solution availability is availability of LRS/GRS/ZRS, multiplied by the application’s availability to perform backup and restore. In Azure Backup’s case, the second part is guaranteed at 99.9% today.

    Hope this clarifies!

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  2. Girish Sharma 0 Reputation points
    2023-01-27T04:11:41.6733333+00:00

    hi Thiago Pfiffner,

    LRS provides at least 99.999999999% (11 nines) durability of objects over a given year.

    ZRS offers durability for storage resources of at least 99.9999999999% (12 9's) over a given year.

    you can read several blogs as well for batter understanding some I have mentioned below.

    [https://learn.microsoft.com/en-us/azure/storage/common/storage-redundancy

    [https://azure.microsoft.com/en-in/support/legal/sla/summary/

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