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What is Microsoft's commitment for data recovery for LRS storage?

George Law 0 Reputation points
2025-03-12T16:25:02.6933333+00:00

We are currently using LRS storage for our MS Azure server. We understand that this means data backups are stored "locally", but we don't know what that actually means: Are backups stored in the data center? Are they stored offsite but in the same general area?

The real question: If there is a catastrophic failure in the MS data center where our servers are located, what is Microsoft's commitment to recover data? Is it just unrecoverably gone, or does MS commit to recovering from some prior point?

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  1. Dillon Silzer 60,836 Reputation points Volunteer Moderator
    2025-03-12T16:48:55.1766667+00:00

    Hello George,

    Locally redundant storage (LRS) replicates the data within your storage accounts to one or more availability zones located in the primary region of your choice. LRS is the least expensive replication option, but isn't recommended for applications requiring high availability or durability.

    "However, if a disaster such as fire or flooding occurs within the data center, all replicas of a storage account using LRS might be lost or unrecoverable. To mitigate this risk, Microsoft recommends using zone-redundant storage (ZRS), geo-redundant storage (GRS), or geo-zone-redundant storage (GZRS)."

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

    As seen in the article above, if you are worried about a catastrophic disaster to a datacentre, I would recommend looking into one of the other options including ZRS, GRS or GZRS.

    Hope this helps

    If this is helpful please accept as answer or upvote.

    Best regards,

    Dillon Silzer | Cloudaen.com | Cloudaen Computing Solutions

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