InfoScale™ 9.0 Cluster Server Agent for Hitachi TrueCopy/HP-XP Continuous Access Configuration Guide - Windows

Last Published:
Product(s): InfoScale & Storage Foundation (9.0)
Platform: Windows
  1. Introducing the agent for Hitachi TrueCopy/Hewlett-Packard XP Continuous Access
    1.  
      About the agent for Hitachi TrueCopy/HP-XP Continuous Access
    2.  
      Supported software
    3.  
      Supported hardware
    4.  
      Typical Hitachi TrueCopy/Hewlett-Packard XP Continuous Access setup in a VCS cluster
    5. Hitachi TrueCopy/Hewlett-Packard XP Continuous Access agent functions
      1.  
        About the Hitachi TrueCopy/Hewlett-Packard XP Continuous Access agent's online function
  2. Configuring the agent for Hitachi TrueCopy/Hewlett-Packard XP Continuous Access
    1. Configuration concepts for the Hitachi TrueCopy/Hewlett-Packard XP Continuous Access agent
      1.  
        Resource type definition for the Hitachi TrueCopy agent
      2. Attribute definitions for the TrueCopy/HP-XP-CA agent
        1. About the SplitTakeover attribute for the Hitachi TrueCopy agent
          1.  
            SplitTakeover attribute = 0
          2.  
            SplitTakeover attribute = 1
        2. About the FreezeSecondaryOnSplit attribute for the Hitachi TrueCopy agent
          1.  
            FreezeSecondaryOnSplit attribute = 0
        3.  
          About the HTC configuration parameters
        4.  
          Special consideration for fence level NEVER
        5.  
          Considerations for calculating the AllowAutoFailoverInterval attribute value
      3.  
        Sample configuration for the TrueCopy/HP-XP-CA agent
    2. Before you configure the agent for Hitachi TrueCopy/Hewlett-Packard XP Continuous Access
      1.  
        About cluster heartbeats
      2.  
        About configuring system zones in replicated data clusters
      3.  
        About preventing split-brain
    3. Configuring the agent for Hitachi TrueCopy/Hewlett-Packard XP Continuous Access
      1.  
        Configuring the agent manually in a global cluster
      2.  
        Configuring the agent manually in a replicated data cluster
  3. Testing VCS disaster recovery support with Hitachi TrueCopy/Hewlett-Packard XP Continuous Access
    1. How VCS recovers from various disasters in an HA/DR setup with Hitachi TrueCopy/Hewlett-Packard XP Continuous Access
      1.  
        Failure scenarios in global clusters
      2.  
        Failure scenarios in replicated data clusters
      3.  
        Replication link / Application failure scenarios
    2.  
      Testing the global service group migration
    3.  
      Testing disaster recovery after host failure
    4.  
      Testing disaster recovery after site failure
    5.  
      Performing failback after a node failure or an application failure
    6.  
      Performing failback after a site failure
  4. Setting up fire drill
    1.  
      About fire drills
    2. About the HTCSnap agent
      1.  
        HTCSnap agent functions
      2.  
        Resource type definition for the HTCSnap agent
      3.  
        Attribute definitions for the HTCSnap agent
      4.  
        About the Snapshot attributes
      5.  
        Sample configuration for a fire drill service group
    3.  
      Additional considerations for running a fire drill
    4.  
      Before you configure the fire drill service group
    5. Configuring the fire drill service group
      1.  
        About the Fire Drill wizard
    6.  
      Verifying a successful fire drill

Attribute definitions for the HTCSnap agent

To customize the behavior of the HTCSnap agent, configure the following attributes:

ShadowInstance

The instance number of the ShadowInstance P-VOL group.

The P-VOL group must include one of the following:

  • The same LUNs as in the TrueCopy S-VOL group (if taking snapshots of replicated data).

  • The same LUNs as in the VxVM disk group (if taking snapshots of non-replicated data).

Type-dimension: integer-scalar

TargetResName

Name of the resource managing the LUNs that you want to take snapshot of. Set this attribute to the name of the HTC resource if you want to take a snapshot of replicated data. Set this attribute to the name of the DiskGroup resource if the data is not replicated.

For example, in a typical database setup, you might replicate data files and redo logs, but you may choose to avoid replicating temporary tablespaces. The temporary tablespace must still exist at the DR site and may be part of its own disk group.

Type-dimension: string-scalar

MountSnapshot

Specifies whether the resource uses the snapshot to bring the service group online. Set this attribute to 1.

Type-Dimension: integer-scalar

Note:

Set this attribute to 1 only if UseSnapshot is set to 1.

UseSnapshot

Specifies whether the HTCSnap resource takes a local snapshot of the target array. Set this attribute to 1.

Type-Dimension: integer-scalar

See About the Snapshot attributes.

RequireSnapshot

Specifies whether the HTCSnap resource must take a snapshot before coming online.

Set this attribute to 1 if you want the resource to come online only after it succeeds in taking a snapshot.

Type-Dimension: integer-scalar

Note:

Set this attribute to 1 only if UseSnapshot is set to 1.

  

DiskGroupSnapList

This is an optional attribute that lists the original disk group names and the fire drill disk group names.

Type-dimension: string-scalar

Responsibility

Do not modify. For internal use only.

Used by the agent to keep track of resynchonizing snapshots.

Type-Dimension: temporary string

FDFile

Do not modify. For internal use only.

Used by the agent to store the absolute pathname to the file with the latest fire drill report on the local system.

Type-Dimension: temporary string