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MS Tech Talk: "What is the difference between drive and snapshot in Azure?" RRS feed

Answers

  • Snapshot blobs allow you to create read-only versions of a blob which can be used for creating blob backups or blob versioning.  Because snapshots are read-only, your account is only charged for the unique data.  Any shared data across snapshots and the base blob from which they were derived do not accrue additional storage charges.  As you change the blob, only the changed content is stored.  You can use snapshots as an efficient way of keeping multiple versions of a blob without creating a virtual hard drive to store iterative data in your storage account. 


    MS Tech Talk persona
    • Marked as answer by MS Tech Talk Friday, October 22, 2010 6:50 PM
    Friday, October 22, 2010 6:50 PM

All replies

  • Snapshot blobs allow you to create read-only versions of a blob which can be used for creating blob backups or blob versioning.  Because snapshots are read-only, your account is only charged for the unique data.  Any shared data across snapshots and the base blob from which they were derived do not accrue additional storage charges.  As you change the blob, only the changed content is stored.  You can use snapshots as an efficient way of keeping multiple versions of a blob without creating a virtual hard drive to store iterative data in your storage account. 


    MS Tech Talk persona
    • Marked as answer by MS Tech Talk Friday, October 22, 2010 6:50 PM
    Friday, October 22, 2010 6:50 PM
  • I would also recommend to consider the percentage of blob changes. More changes would require more blob in relationship to that particular snapshot. 

      

    In real world 5% extra blob is required on top of your actual blob size - which is comparatively very less than having a clone blob. 


    MS Tech Talk persona
    Friday, October 22, 2010 6:51 PM