SQL Data Sync

Azure SQL Data Sync (Preview) is a service that enables you to synchronize the data you select across multiple SQL Server and SQL Database instances. To synchronize your data you create sync groups which define the databases, tables and columns to synchronize as well as the synchronization schedule. Each sync group must have at least one SQL Database instance which serves as the sync group hub in a hub-and-spoke topology.

If you have any feedback on Azure SQL Data Sync service, we’d love to hear it.

How can we improve SQL Data Sync?

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  1. Are there any way to use SQL Data Sync with "Allow access to Azure Service" OFF

    As far as I know, as of now we have to enable "Allow access to Azure Service" ON when we use SQL Data Sync. However, I don't want to enable this option because any applications in Azure can pass through firewall rule and this may be security vulnerability.

    I'd appreciate it if you could provide public IP address on Azure Data Sync Agent to be restricted on Azure SQL Server's firewall rules.

    6 votes
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      0 comments  ·  Flag idea as inappropriate…  ·  Admin →
    • Sync table between Row-stored and Column-stored

      I want to use the Row-stored table for OLTP,
      and to use the Column-stored table for Analyze using Power BI.

      So, I hope to sync table between Row-stored and Column-stored.
      There are the Row-stored table on Azure SQL Database standard,
      and There are the Column-stored table on SQL Server Express.

      1 vote
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        0 comments  ·  Flag idea as inappropriate…  ·  Admin →
      • Provide some sort of warning in the Azure Portal regarding the schema modification that occurs during SQL Data Sync

        I would like more transparency in to what occurs during the SQL Data Sync when creating it in the Azure portal.

        I created a Sync group, tried running it, the sync failed, and left the Hub database throwing SQL errors in my web app. Thus, there should be some sort of notification that the Hub database is modified when running the Sync.

        1 vote
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          0 comments  ·  Flag idea as inappropriate…  ·  Admin →
        • Provide a roadmap for SQL Data Sync

          Provide information on what Microsoft has in store for the future of Data Sync. There has been hardly any work or updates to it in years, it has been in preview for that whole time.
          I really want to use this service as there is no equivalent on the market, but am hesitant to as it could be discontinued at any time.

          Is this product dead?

          72 votes
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            11 comments  ·  Flag idea as inappropriate…  ·  Admin →

            Thanks for the suggestion! We are actively working on the roadmap, and will share publically when we have a concrete plan. Meanwhile, it would be great if you could share with us what scenario are you looking to use sync for. If you would like to be contacted offline, do leave a message and I’ll get back to you. — Linda Wang

          • Allow continuous synchronisation or intervals less than 5 minutes

            Current smallest interval is 5 minutes, allow me to set this to between 1 and 4 minutes or a continuous synchronisation option. A wait of up to 5 minutes for sync is not always acceptable.

            88 votes
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              5 comments  ·  Flag idea as inappropriate…  ·  Admin →
            • Support all data types like money, bigint and varbinary.

              I can't use SQL Data Sync because it doesn't support all data types yet.
              If MS Azure team starts to support other data types, I'll use the SQL Data Sync service.

              29 votes
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                1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                under review  ·  Shirley Wang responded

                Thank you for your feedback! We will consider this request as we priority our feature backlog.

              • Add support for circular foreign key dependencies

                Curently if the database contains circular foreign key dependencies the Azure Data Sync will not deploy the sync group reporting the error:
                Cannot deploy the sync group because there is a circular foreign key dependency

                281 votes
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                  23 comments  ·  Flag idea as inappropriate…  ·  Admin →
                • Support compression

                  Most of the data being passed as datasets is highly compressible. We have created methods to compress/decompress the data when batched, but it would be nice to support this option out of the box to minimize the amount of data being sent over the wire.

                  58 votes
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                    0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                    under review  ·  Shirley Wang responded

                    Thanks for the suggestion! We are evaluating the priority and cost for implementing this.

                  • 62 votes
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                      4 comments  ·  Flag idea as inappropriate…  ·  Admin →
                    • Provide API’s to configure, manage and initiate sync

                      Allow on-premises or cloud-based applications to configure sync groups and initiate syncs.

                      255 votes
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                        planned  ·  10 comments  ·  Flag idea as inappropriate…  ·  Admin →
                      • Enable SQL Azure Data Sync Agent to support / connect to multiple Subscriptions

                        Currently the SQL Azure Data Sync Agent can only connect to one subscription so if you are supporting multiple clients your local server can't participate in multiple sync topologies. The abilty to connect to multiple subscriptions would enable all my client databases to be synced to one management server.

                        48 votes
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                          2 comments  ·  Flag idea as inappropriate…  ·  Admin →
                        • Automatic propagation of schema changes to one database to all databases in a sync group

                          In addition to allowing Sync Group configuration to be updated to cater for schema changes, automatically propagate the schema changes to all databases in a Sync Group.

                          209 votes
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                            3 comments  ·  Flag idea as inappropriate…  ·  Admin →
                            under review  ·  Shirley Wang responded

                            We are more focused around data synchronization than schema synchronization at the moment. We may revisit the priority of this in the future.

                          • Provide monitoring API’s

                            Provide a REST API to allow synchronization status to be monitored programmatically. For example, current status of all Sync Groups to determine if syncs are succeeding or failing for any reason.

                            203 votes
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                              planned  ·  4 comments  ·  Flag idea as inappropriate…  ·  Admin →
                            • Support files and Windows Azure Blobs

                              Add synchronization capabilities for the Windows Azure Blob Service. Allow data to be synchronized between storage accounts and allow on-premises file data to be synchronized with the Blob Service.

                              103 votes
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                                6 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                under review  ·  Shirley Wang responded

                                This is a very interesting idea! We would like to know what specific usage you have in mind – for example, are you continuously generating operational logs on-prem and would like an utility to easily upload these files into blob storage for further analysis, maybe using HDInsight? Please post your comments!

                              • don't touch/modify my schemas

                                I don't want the data sync or anything else for that matter to "touch" any of my databases.

                                56 votes
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                                  4 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                  under review  ·  Shirley Wang responded

                                  Thank you for your suggestion! We would like to know what your concern is around schema modification – is it because you don’t always get granted schema modification rights? Are you concerned about administration/maintenance overhead of additional objects? Or are you concerned about additional overhead it places on the database?

                                • Off line Sync feature

                                  Feature to sync between two database, once they are connected to net or by moving some files to other machine and sync with othere database

                                  25 votes
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                                    1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                                    under review  ·  Shirley Wang responded

                                    This is an interesting idea – allowing source to turn on change tracking, but not requiring the sync group to be persisted but rather the sync relationship established dynamically.

                                  • Support filtered indexes

                                    We used a member database that included a table with a filtered index (i.e. WHERE is_deleted = 0).

                                    The initial sync recreated the table and the indexes, but omitted the where condition, which made subsequent syncs fail.

                                    6 votes
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                                      0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                    • Hi, we need to have access to the sync pipeline to be able to change some values depending on the destination databases as well as improve c

                                      Hi,
                                      We need to have access to the sync pipeline to be able to change some values depending on the destination databases as well as improve conflict resolution.
                                      Thanks for your help

                                      3 votes
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                                        0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                      • Fast one-way sync

                                        Have any easy to configure one-way, all tables sync.

                                        4 votes
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                                          0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Allow bulk insert when first populates data to target database

                                          It took over 10 hours to move 6GB of data to target database on the first synchronization. When I used SQLAzureMW, it took less than hour.

                                          14 votes
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                                            3 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                            planned  ·  Shirley Wang responded

                                            Data Sync team is planning to improve initial synchronization performance by using bulk insert and other optimization techniques.

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