Cluster Server 7.4 Agent for EMC SRDF Configuration Guide - Windows

Last Published:
Product(s): InfoScale & Storage Foundation (7.4.1)
Platform: Windows
  1. Introducing the agent for EMC SRDF
    1.  
      About the agent for EMC SRDF
    2.  
      Supported hardware for EMC SRDF
    3.  
      Supported software
    4.  
      Typical EMC SRDF setup in a VCS cluster
    5. EMC SRDF agent functions
      1.  
        About the EMC SRDF agent's online function
      2.  
        About dynamic swap support for the EMC SRDF agent
    6.  
      Installing the agent for EMC SRDF
  2. Configuring the agent for EMC SRDF
    1. Configuration concepts for the EMC SRDF agent
      1.  
        Resource type definition for the EMC SRDF agent
      2. Attribute definitions for the SRDF agent
        1.  
          Required attributes
        2.  
          Optional attributes
        3.  
          Internal attributes
      3.  
        Sample configuration for the EMC SRDF agent
    2. Before you configure the agent for EMC SRDF
      1.  
        About cluster heartbeats
      2.  
        About configuring system zones in replicated data clusters
      3.  
        About preventing split-brain
    3. Configuring the agent for EMC SRDF
      1. Configuring the agent manually in a global cluster
        1.  
          Configuring the Symm heartbeat on each cluster
      2.  
        Configuring the agent manually in a replicated data cluster
      3.  
        Setting the OnlineTimeout attribute for the SRDF resource
      4.  
        Additional configuration considerations for the SRDF agent
  3. Testing VCS disaster recovery support with EMC SRDF
    1. How VCS recovers from various disasters in an HA/DR setup with EMC SRDF
      1.  
        Failure scenarios in global clusters
      2.  
        Failure scenarios in replicated data clusters
    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.  
      Fire drill configurations
    3. About the SRDFSnap agent
      1.  
        SRDFSnap agent functions
      2.  
        Resource type definition for the SRDFSnap agent
      3.  
        Attribute definitions for the SRDFSnap agent
      4.  
        About the Snapshot attributes
      5.  
        Sample configuration for a fire drill service group
    4.  
      Additional considerations for running a fire drill
    5.  
      Before you configure the fire drill service group
    6. Configuring the fire drill service group
      1.  
        About the Fire Drill wizard
    7.  
      Verifying a successful fire drill

SRDFSnap agent functions

The SRDFSnap agent performs the following functions:

online

Gold Configuration

  • Takes a local snapshot of the target LUN.

  • Takes the fire drill service group online by mounting the replication target LUN.

  • Creates a lock file to indicate that the resource is online.

Silver Configuration

  • Takes a local snapshot of the target LUN.

  • Splits replication between the source and the target arrays.

  • Takes the fire drill service group online by mounting the target LUN.

  • Creates a lock file to indicate that the resource is online.

Bronze Configuration

  • Splits replication between the source and the target arrays.

  • Takes the fire drill service group online using the target array.

  • Creates a lock file to indicate that the resource is online.

offline

Gold Configuration

  • Destroys the snapshot by synchronizing data between the target array and the device on which snapshot was taken.

  • Removes the lock file created by the online function.

Silver Configuration

  • Resumes replication between the source and the target arrays.

  • Synchronizes data between the target array and the device on which the snapshot was taken. Destroys the snapshot of the target array after the data is synchronized.

  • Removes the lock file created by the online function.

Bronze Configuration

  • Resumes the replication between the source and the target arrays.

  • Removes the lock file created by the Online operation.

monitor

Verifies the existence of the lock file to make sure the resource is online.

clean

Restores the state of the LUNs to their original state after a failed online function.

attr_changed

Monitors the change in the value of the following attributes and verifies that the new value is not invalid.

  • CopyMode

  • SavePoolName

  • DiskGroupSnapList

Verifies that if a value has been assigned to the SavePoolName attribute, then the value of the CopyMode attribute is set to 'snap'. Also verifies that the value of the DiskGroupSnapList attribute is in the correct format.