Back up your synology NAS data in Windows Azure Cool Storage

Written by ppolyzos

Software engineer based in beautiful Luxembourg


  1. Shahim Khan

    thanks for this excellent article.
    i have followed your steps and successfully created a backup job from my synology share to an Azure cloud blob storage.
    My main concern now is on how can we restore this backup to another synology box incase the current synology NAS crashes or dies.

    1. ppolyzos

      In your new Synology system you can connect your Azure Cool Storage to Hyper Backup and restore data to whichever folder you like.

      There is a Restore button on the bottom left corner to restore backup.

      • – Select the version of backup data you want to restore
      • – Specify the folder where you want to place your backup data
      • – Start restore process and just wait for it to complete

      You can find more info here

  2. Bhushan

    Great, clear and simple to understand article.

    I would like to know that you informed “In general, any data which lives for a longer period of time and is accessed less than once a month is the perfect candidate for cool storage.” but would like to know if from Synology Hyper Backup I schedule backup on daily basis and not less than once a month, then also I can select Azure Cool Blob Storage or should I select any other options.

    And what can be the approx prices for Azure Cool Blob Storage for storing 1 TB of Data.


    1. ppolyzos

      For more details on Azure pricing you can have a look here. Approximately, 1TB of data will cost you around 10$/month.

      Now related to the first part of your question. Have in mind that the Azure cool storage tier is optimized for storing data that is infrequently accessed and long-lived. The difference between Hot and Cool storage is in availability (99.99% for Hot tier, 99% for Cool) and that in Cool Storage you have lower storage costs but higher access and transaction costs.

      Storing data in Cool Storage tier is very cheap so daily backup is fine as long you don’t request the backed up data very often. You don’t pay anything for data going into Azure data centers. For example, I perform daily backups for my photos but I rarely access them from Azure. I have it as a backup plan in case my NAS some day fails.

  3. Brad

    I would recommend adding in a comment that you need to disable (or not enable in the first place) “Secure Transfer Required” otherwise Hyper Backup will fail to create the backup task.

  4. Jim

    Thanks very much for your guidance on Azure backup with HyperBackup. Does this backup procedure do incremental backups after the initial backup is taken?

  5. Fredrik

    Thanks for the excellent article, doing the initial backup now!

    I selected the GPv2 storage. Data can (from today) be hot, cold or archive. Any thoughts on what to archive, and how?

    1. ppolyzos

      Archive access tier costs less but only if you don’t have to retrieve your data frequently. As stated in in microsoft docs, “This tier is intended for data that can tolerate several hours of retrieval latency and will remain in the archive tier for at least 180 days”.

      An example for personal use would be, to backup raw format photos after you have done finished processing on them.
      In general, archive tier is good for data that you never wish to use them, but in case you have to, it’s a good thing to know it’s there 🙂

  6. Daniel

    Thank you for a very nice article. Now, when you have used this setup/service with Azure as a storageplace for your backups, what have you been charged from MS per month? I guess that after an initial full backup and some months with regular incremental backups…you should have a picture of what the cost is to backup to Azure. Willing to share?

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