Does clustering provide disaster recovery in MS SQL Server?

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I mean can the nodes of MS SQL Server failover clustering be geographically separated and besides high availability also provide disaster recovery?






sql-server clustering







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  • If your asking if storage can magically move between different data centers, then no. HADR connects the data centers together, but you may find MSSQL 2019’s partial on-premise storage may help. Whatever your method, it has to be storage that is accessible between two data centers...impossible without some kind of replication (DR or not)
    – clifton_h
    1 hour ago











  • One option is SQL Server Multi-Subnet Clustering (SQL Server) but you need double the hardware.
    – SqlWorldWide
    1 hour ago










  • Only if you're willing to spend a heck of a lot of money on storage replication.
    – sp_BlitzErik
    28 mins ago
















up vote
1
down vote

favorite












I mean can the nodes of MS SQL Server failover clustering be geographically separated and besides high availability also provide disaster recovery?






sql-server clustering







share|improve this question





















  • If your asking if storage can magically move between different data centers, then no. HADR connects the data centers together, but you may find MSSQL 2019’s partial on-premise storage may help. Whatever your method, it has to be storage that is accessible between two data centers...impossible without some kind of replication (DR or not)
    – clifton_h
    1 hour ago











  • One option is SQL Server Multi-Subnet Clustering (SQL Server) but you need double the hardware.
    – SqlWorldWide
    1 hour ago










  • Only if you're willing to spend a heck of a lot of money on storage replication.
    – sp_BlitzErik
    28 mins ago












up vote
1
down vote

favorite









up vote
1
down vote

favorite











I mean can the nodes of MS SQL Server failover clustering be geographically separated and besides high availability also provide disaster recovery?






sql-server clustering







share|improve this question













I mean can the nodes of MS SQL Server failover clustering be geographically separated and besides high availability also provide disaster recovery?






sql-server clustering




sql-server clustering






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 1 hour ago









Eleonora Grigoryan

49013




49013











  • If your asking if storage can magically move between different data centers, then no. HADR connects the data centers together, but you may find MSSQL 2019’s partial on-premise storage may help. Whatever your method, it has to be storage that is accessible between two data centers...impossible without some kind of replication (DR or not)
    – clifton_h
    1 hour ago











  • One option is SQL Server Multi-Subnet Clustering (SQL Server) but you need double the hardware.
    – SqlWorldWide
    1 hour ago










  • Only if you're willing to spend a heck of a lot of money on storage replication.
    – sp_BlitzErik
    28 mins ago
















  • If your asking if storage can magically move between different data centers, then no. HADR connects the data centers together, but you may find MSSQL 2019’s partial on-premise storage may help. Whatever your method, it has to be storage that is accessible between two data centers...impossible without some kind of replication (DR or not)
    – clifton_h
    1 hour ago











  • One option is SQL Server Multi-Subnet Clustering (SQL Server) but you need double the hardware.
    – SqlWorldWide
    1 hour ago










  • Only if you're willing to spend a heck of a lot of money on storage replication.
    – sp_BlitzErik
    28 mins ago















If your asking if storage can magically move between different data centers, then no. HADR connects the data centers together, but you may find MSSQL 2019’s partial on-premise storage may help. Whatever your method, it has to be storage that is accessible between two data centers...impossible without some kind of replication (DR or not)
– clifton_h
1 hour ago





If your asking if storage can magically move between different data centers, then no. HADR connects the data centers together, but you may find MSSQL 2019’s partial on-premise storage may help. Whatever your method, it has to be storage that is accessible between two data centers...impossible without some kind of replication (DR or not)
– clifton_h
1 hour ago













One option is SQL Server Multi-Subnet Clustering (SQL Server) but you need double the hardware.
– SqlWorldWide
1 hour ago




One option is SQL Server Multi-Subnet Clustering (SQL Server) but you need double the hardware.
– SqlWorldWide
1 hour ago












Only if you're willing to spend a heck of a lot of money on storage replication.
– sp_BlitzErik
28 mins ago




Only if you're willing to spend a heck of a lot of money on storage replication.
– sp_BlitzErik
28 mins ago










1 Answer
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By itself, no: clustering relies on shared storage. A failover cluster with shared storage looks like this:



Failover cluster



All 4 of the components - the 2 servers, the switch, and the shared storage - should be located in the same data center.



Disaster recovery is about maintaining availability even when you lose a data center. That means you need the same infrastructure pictured here, but in yet another data center, with some kind of mechanism keeping the data in sync between those environments.



Options include:



  • Storage replication

  • Always On Availability Groups

  • Log shipping

  • Database mirroring

But all of these are above and beyond plain ol' failover clustering.






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    1 Answer
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    active

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    1 Answer
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    active

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    up vote
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    down vote













    By itself, no: clustering relies on shared storage. A failover cluster with shared storage looks like this:



    Failover cluster



    All 4 of the components - the 2 servers, the switch, and the shared storage - should be located in the same data center.



    Disaster recovery is about maintaining availability even when you lose a data center. That means you need the same infrastructure pictured here, but in yet another data center, with some kind of mechanism keeping the data in sync between those environments.



    Options include:



    • Storage replication

    • Always On Availability Groups

    • Log shipping

    • Database mirroring

    But all of these are above and beyond plain ol' failover clustering.






    share|improve this answer
























      up vote
      3
      down vote













      By itself, no: clustering relies on shared storage. A failover cluster with shared storage looks like this:



      Failover cluster



      All 4 of the components - the 2 servers, the switch, and the shared storage - should be located in the same data center.



      Disaster recovery is about maintaining availability even when you lose a data center. That means you need the same infrastructure pictured here, but in yet another data center, with some kind of mechanism keeping the data in sync between those environments.



      Options include:



      • Storage replication

      • Always On Availability Groups

      • Log shipping

      • Database mirroring

      But all of these are above and beyond plain ol' failover clustering.






      share|improve this answer






















        up vote
        3
        down vote










        up vote
        3
        down vote









        By itself, no: clustering relies on shared storage. A failover cluster with shared storage looks like this:



        Failover cluster



        All 4 of the components - the 2 servers, the switch, and the shared storage - should be located in the same data center.



        Disaster recovery is about maintaining availability even when you lose a data center. That means you need the same infrastructure pictured here, but in yet another data center, with some kind of mechanism keeping the data in sync between those environments.



        Options include:



        • Storage replication

        • Always On Availability Groups

        • Log shipping

        • Database mirroring

        But all of these are above and beyond plain ol' failover clustering.






        share|improve this answer












        By itself, no: clustering relies on shared storage. A failover cluster with shared storage looks like this:



        Failover cluster



        All 4 of the components - the 2 servers, the switch, and the shared storage - should be located in the same data center.



        Disaster recovery is about maintaining availability even when you lose a data center. That means you need the same infrastructure pictured here, but in yet another data center, with some kind of mechanism keeping the data in sync between those environments.



        Options include:



        • Storage replication

        • Always On Availability Groups

        • Log shipping

        • Database mirroring

        But all of these are above and beyond plain ol' failover clustering.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 24 mins ago









        Brent Ozar

        33k1998228




        33k1998228



























             

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