Veritas InfoScale™ 7.3.1 Disaster Recovery Implementation Guide - Linux

Last Published:
Product(s): InfoScale & Storage Foundation (7.3.1)
  1. Section I. Introducing Storage Foundation and High Availability Solutions for disaster recovery
    1. About supported disaster recovery scenarios
      1.  
        About disaster recovery scenarios
      2. About campus cluster configuration
        1.  
          VCS campus cluster requirements
        2.  
          How VCS campus clusters work
        3.  
          Typical VCS campus cluster setup
      3. About replicated data clusters
        1.  
          How VCS replicated data clusters work
      4. About global clusters
        1.  
          How VCS global clusters work
        2.  
          User privileges for cross-cluster operations
        3. VCS global clusters: The building blocks
          1.  
            Visualization of remote cluster objects
          2.  
            About global service groups
          3. About global cluster management
            1.  
              About the wide-area connector process
            2.  
              About the wide-area heartbeat agent
            3.  
              Sample configuration for the wide-area heartbeat agent
          4. About serialization - The Authority attribute
            1.  
              About the Authority and AutoStart attributes
          5.  
            About resiliency and "Right of way"
          6.  
            VCS agents to manage wide-area failover
          7.  
            About the Steward process: Split-brain in two-cluster global clusters
          8.  
            Secure communication in global clusters
      5.  
        Disaster recovery feature support for components in the Veritas InfoScale product suite
      6.  
        Virtualization support for Storage Foundation and High Availability Solutions 7.3.1 products in replicated environments
    2. Planning for disaster recovery
      1. Planning for cluster configurations
        1.  
          Planning a campus cluster setup
        2.  
          Planning a replicated data cluster setup
        3.  
          Planning a global cluster setup
      2. Planning for data replication
        1.  
          Data replication options
        2.  
          Data replication considerations
  2. Section II. Implementing campus clusters
    1. Setting up campus clusters for VCS and SFHA
      1. About setting up a campus cluster configuration
        1.  
          Preparing to set up a campus cluster configuration
        2.  
          Configuring I/O fencing to prevent data corruption
        3.  
          Configuring VxVM disk groups for campus cluster configuration
        4.  
          Configuring VCS service group for campus clusters
        5.  
          Setting up campus clusters for VxVM and VCS using Veritas InfoScale Operations Manager
      2.  
        Fire drill in campus clusters
      3.  
        About the DiskGroupSnap agent
      4. About running a fire drill in a campus cluster
        1.  
          Configuring the fire drill service group
        2.  
          Running a successful fire drill in a campus cluster
    2. Setting up campus clusters for SFCFSHA, SFRAC
      1.  
        About setting up a campus cluster for disaster recovery for SFCFSHA or SF Oracle RAC
      2.  
        Preparing to set up a campus cluster in a parallel cluster database environment
      3.  
        Configuring I/O fencing to prevent data corruption
      4.  
        Configuring VxVM disk groups for a campus cluster in a parallel cluster database environment
      5.  
        Configuring VCS service groups for a campus cluster for SFCFSHA and SF Oracle RAC
      6.  
        Tuning guidelines for parallel campus clusters
      7.  
        Best practices for a parallel campus cluster
  3. Section III. Implementing replicated data clusters
    1. Configuring a replicated data cluster using VVR
      1. About setting up a replicated data cluster configuration
        1.  
          About typical replicated data cluster configuration
        2.  
          About setting up replication
        3.  
          Configuring the service groups
        4.  
          Configuring the service group dependencies
      2. About migrating a service group
        1.  
          Switching the service group
      3.  
        Fire drill in replicated data clusters
    2. Configuring a replicated data cluster using third-party replication
      1.  
        About setting up a replicated data cluster configuration using third-party replication
      2.  
        About typical replicated data cluster configuration using third-party replication
      3.  
        About setting up third-party replication
      4.  
        Configuring the service groups for third-party replication
      5.  
        Fire drill in replicated data clusters using third-party replication
  4. Section IV. Implementing global clusters
    1. Configuring global clusters for VCS and SFHA
      1.  
        Installing and Configuring Cluster Server
      2. Setting up VVR replication
        1.  
          About configuring VVR replication
        2.  
          Best practices for setting up replication
        3. Creating a Replicated Data Set
          1. Creating a Primary RVG of an RDS
            1.  
              Prerequisites for creating a Primary RVG of an RDS
            2.  
              Example - Creating a Primary RVG containing a data volume
            3.  
              Example - Creating a Primary RVG containing a volume set
          2. Adding a Secondary to an RDS
            1.  
              Best practices for adding a Secondary to an RDS
            2.  
              Prerequisites for adding a Secondary to an RDS
          3. Changing the replication settings for a Secondary
            1. Setting the mode of replication for a Secondary
              1.  
                Example - Setting the mode of replication to asynchronous for an RDS
              2.  
                Example - Setting the mode of replication to synchronous for an RDS
            2.  
              Setting the latency protection for a Secondary
            3.  
              Setting the SRL overflow protection for a Secondary
            4.  
              Setting the network transport protocol for a Secondary
            5. Setting the packet size for a Secondary
              1.  
                Example - Setting the packet size between the Primary and Secondary
            6. Setting the bandwidth limit for a Secondary
              1.  
                Example: Limiting network bandwidth between the Primary and the Secondary
              2.  
                Example: Disabling Bandwidth Throttling between the Primary and the Secondary
              3.  
                Example: Limiting network bandwidth used by VVR when using full synchronization
        4. Synchronizing the Secondary and starting replication
          1. Methods to synchronize the Secondary
            1.  
              Using the network to synchronize the Secondary
            2.  
              Using block-level tape backup to synchronize the Secondary
            3.  
              Moving disks physically to synchronize the Secondary
          2. Using the automatic synchronization feature
            1.  
              Notes on using automatic synchronization
          3.  
            Example for setting up replication using automatic synchronization
          4.  
            About SmartMove for VVR
          5.  
            About thin storage reclamation and VVR
          6.  
            Determining if a thin reclamation array needs reclamation
        5. Starting replication when the data volumes are zero initialized
          1.  
            Example: Starting replication when the data volumes are zero initialized
      3.  
        Setting up third-party replication
      4. Configuring clusters for global cluster setup
        1.  
          Configuring global cluster components at the primary site
        2.  
          Installing and configuring VCS at the secondary site
        3.  
          Securing communication between the wide-area connectors
        4.  
          Configuring remote cluster objects
        5.  
          Configuring additional heartbeat links (optional)
        6.  
          Configuring the Steward process (optional)
      5. Configuring service groups for global cluster setup
        1.  
          Configuring VCS service group for VVR-based replication
        2.  
          Configuring a service group as a global service group
      6.  
        Fire drill in global clusters
    2. Configuring a global cluster with Storage Foundation Cluster File System High Availability, Storage Foundation for Oracle RAC, or Storage Foundation for Sybase CE
      1.  
        About global clusters
      2.  
        About replication for parallel global clusters using Storage Foundation and High Availability (SFHA) Solutions
      3.  
        About setting up a global cluster environment for parallel clusters
      4.  
        Configuring the primary site
      5. Configuring the secondary site
        1.  
          Configuring the Sybase ASE CE cluster on the secondary site
      6.  
        Setting up replication between parallel global cluster sites
      7.  
        Testing a parallel global cluster configuration
    3. Configuring global clusters with VVR and Storage Foundation Cluster File System High Availability, Storage Foundation for Oracle RAC, or Storage Foundation for Sybase CE
      1.  
        About configuring a parallel global cluster using Volume Replicator (VVR) for replication
      2. Setting up replication on the primary site using VVR
        1.  
          Creating the data and SRL volumes on the primary site
        2.  
          Setting up the Replicated Volume Group on the primary site
      3. Setting up replication on the secondary site using VVR
        1.  
          Creating the data and SRL volumes on the secondary site
        2.  
          Editing the /etc/vx/vras/.rdg files
        3.  
          Setting up IP addresses for RLINKs on each cluster
        4.  
          Setting up the disk group on secondary site for replication
      4.  
        Starting replication of the primary site database volume to the secondary site using VVR
      5. Configuring Cluster Server to replicate the database volume using VVR
        1.  
          Modifying the Cluster Server (VCS) configuration on the primary site
        2.  
          Modifying the VCS configuration on the secondary site
        3.  
          Configuring the Sybase ASE CE cluster on the secondary site
      6.  
        Replication use cases for global parallel clusters
  5. Section V. Configuring disaster recovery in cloud environments
    1. Replication scenarios
      1.  
        About data replication in cloud environments
      2.  
        About the supported replication scenarios
    2. Replicating in AWS cloud environment
      1.  
        Replication from on-premise to AWS cloud
      2.  
        Replication across Availability Zones within the same AWS region
      3.  
        Replication across AWS regions
      4.  
        Replication across multiple AWS Availability Zones and regions (campus cluster)
    3. Replicating in Azure cloud environment
      1.  
        Replication from on-premise to Azure cloud
      2.  
        Replication within same Azure region
      3.  
        Replication across Azure regions
      4.  
        Replication across multiple sites and regions (campus cluster)
      5.  
        About identifying a temporary resource disk
    4. Replicating across clouds
      1.  
        Replication in cross-cloud environment
  6. Section VI. Reference
    1. Appendix A. Sample configuration files
      1. Sample Storage Foundation for Oracle RAC configuration files
        1.  
          sfrac02_main.cf file
        2.  
          sfrac07_main.cf and sfrac08_main.cf files
        3.  
          sfrac09_main.cf and sfrac10_main.cf files
        4.  
          sfrac11_main.cf file
        5.  
          sfrac12_main.cf and sfrac13_main.cf files
        6.  
          Sample fire drill service group configuration
      2. About sample main.cf files for Storage Foundation (SF) for Oracle RAC
        1.  
          Sample main.cf for Oracle 10g for CVM/VVR primary site
        2.  
          Sample main.cf for Oracle 10g for CVM/VVR secondary site
      3. About sample main.cf files for Storage Foundation (SF) for Sybase ASE CE
        1.  
          Sample main.cf for a basic Sybase ASE CE cluster configuration under VCS control with shared mount point on CFS for Sybase binary installation
        2.  
          Sample main.cf for a basic Sybase ASE CE cluster configuration with local mount point on VxFS for Sybase binary installation
        3.  
          Sample main.cf for a primary CVM VVR site
        4.  
          Sample main.cf for a secondary CVM VVR site

Replication within same Azure region

In an Azure cloud environment, in a single region, you can provision your setup across virtual networks (VNets) or within a VNet.

The following diagram illustrates the sample configuration for setting up replication between the same VNet:

Figure: Sample configuration for setting up replication between same VNet

Sample configuration for setting up replication between same VNet

The following diagram illustrates the sample configuration for setting up replication across VNets:

Figure: Sample configuration for setting up replication across VNets

Sample configuration for setting up replication across VNets
Setting up replication in the same VNet

Perform the following steps to set up replication in the same VNet, within the same region

  1. Enable the ports that are used for inbound and outbound communication.

    For a list of required ports and services, refer to, Veritas InfoScale™ Replication Administrator's Guide - Linux.

  2. Using Microsoft Azure portal, create a VNet and specify an IP address space for the VNet.
  3. Create a subnet in the VNet created.

    For details about creating a VNet, specifying an IP address space, and creating a subnet, refer to Microsoft documentation.

  4. Create two virtual machines within the subnets and provision storage.
  5. Install InfoScale Storage/InfoScale Enterprise on both the virtual machines.
  6. Create VxVM disk groups, VxVM volumes, Storage Replicator Log (SRL), Replicated Volume Group (RVG), and RLinks.

    For details refer to, Storage Foundation Cluster File System High Availability Administrator's Guide.

    Note:

    In Azure environment, by default, in addition to the storage disks that you have attached, every virtual machine that is provisioned contains a temporary resource disk, that serves as an ephemeral storage. Do not use the temporary resource as a data disk (VxVM disk) to store persistent data. The disk may change after a machine is redeployed or is restarted, and the data will be lost. For more information about how Azure uses a temporary disk, see Microsoft documentation.

    For details about how to identify a temporary resource disk:

    See About identifying a temporary resource disk.

  7. Flush the iptables on both the virtual machines.

    # iptable -F

  8. Set up replication between the virtual machines using the private IP address or the virtual IP address.

    For details about setting up replication see Setting up replication in the Veritas InfoScale Replication Administrator's Guide.

  9. Verify the replication status.

    # vradmin -g dg_name repstatus rvg_name

    Ensure that the replication status shows:

    Replication status: replicating (connected)

Setting up replication across VNet

Perform the following steps to set up replication across the VNets, within the same region

  1. Using Microsoft Azure portal, create two VNets and specify an IP address space for each VNet.
  2. Set up VNet Peering between the two VNets.
  3. Create a subnet in each VNet.
  4. Create a virtual machine in each subnet and provision storage.
  5. Install InfoScale Storage/InfoScale Enterprise on both the virtual machines.
  6. Create VxVM disk groups, VxVM volumes, Storage Replicator Log (SRL), Replicated Volume Group (RVG), and RLinks.

    For details refer to, Storage Foundation Cluster File System High Availability Administrator's Guide.

    Note:

    In Azure environment, by default, in addition to the storage disks that you have attached, every virtual machine that is provisioned contains a temporary resource disk, that serves as an ephemeral storage. Do not use the temporary resource as a data disk (VxVM disk) to store persistent data. The disk may change after a machine is redeployed or is restarted, and the data will be lost. For more information about how Azure uses a temporary disk, see Microsoft documentation.

    For details about how to identify a temporary resource disk:

    See About identifying a temporary resource disk.

  7. Flush the iptables on both the virtual machines.

    # iptable -F

  8. Set up replication between the virtual machines using the private IP address or the virtual IP address.

    For details about setting up replication see Setting up replication in the Veritas InfoScale Replication Administrator's Guide.

  9. Verify the replication status.

    # vradmin -g dg_name repstatus rvg_name

    Ensure that the replication status shows:

    Replication status: replicating (connected)