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Is it possible to recover data from an azure blob files? RRS feed

  • Question

  • I have an account on azure and build a cluster on it (Chemalivethermotest). It has a storage account and I just by mistake erase all data on it (I misanderstood something on the online azure interface). Is there a way to recover the datas? I see there are no files anymore but there are still blob. Are they allowing to recover things?

    Thanks you very much for your help.

    Thursday, February 11, 2016 1:55 PM

Answers

  • Hello laetis69,

    Can you elaborate more? You mention both files (which are missing) and blobs (which still exist). You also mentioned building a cluster. Trying to understand your scenario:

    Scenario 1: You have blobs stored in Azure Storage and deleted them. If this is the case then Elderts reply is correct. You cannot recover deleted data. Backups are the only way to protect against this type of error. 

    Scenario 2: You have a VM with attached data disks and you deleted files inside the VM which where on the data disk. So now the disks/pageblobs exist but your files inside the VM are deleted. If this is the case, then its is the same as deleting files on a windows volume and there are tools which can run inside the VM and recover data. However no guarantees on such tools. Also in this case there is nothing that Azure Storage can do.

    Scenario 3: The files you mention are files on Azure File Storage shares and blobs on Azure Blob Storage. If this is the case then Elderts reply is correct. You cannot recover deleted data. Backups are the only way to protect against this type of error.

    If you could clarify more that would help.

    Thanks,

    Sriprasad


    Thursday, February 11, 2016 11:49 PM

All replies

  • I'm afraid the files will not be able to be recovered.
    You could try and call support to see if they can be of any help, but no promises there.
    You should always try and make backups of important data, even for your cloud data.
    For in the future, you can have a look at Snapshot Blobs, with these you can create a snapshot periodically, you will be charged of course, but only for the difference between your snapshot and the current file state.

    Thursday, February 11, 2016 10:13 PM
  • Hello laetis69,

    Can you elaborate more? You mention both files (which are missing) and blobs (which still exist). You also mentioned building a cluster. Trying to understand your scenario:

    Scenario 1: You have blobs stored in Azure Storage and deleted them. If this is the case then Elderts reply is correct. You cannot recover deleted data. Backups are the only way to protect against this type of error. 

    Scenario 2: You have a VM with attached data disks and you deleted files inside the VM which where on the data disk. So now the disks/pageblobs exist but your files inside the VM are deleted. If this is the case, then its is the same as deleting files on a windows volume and there are tools which can run inside the VM and recover data. However no guarantees on such tools. Also in this case there is nothing that Azure Storage can do.

    Scenario 3: The files you mention are files on Azure File Storage shares and blobs on Azure Blob Storage. If this is the case then Elderts reply is correct. You cannot recover deleted data. Backups are the only way to protect against this type of error.

    If you could clarify more that would help.

    Thanks,

    Sriprasad


    Thursday, February 11, 2016 11:49 PM