Using SnapProtect Proxy for Disaster Recovery

You can create a SnapProtect proxy to route requests and responses between the CommServe and proxy-enabled clients. The SnapProtect proxy is created exclusively for disaster recovery, when you want to move CommCell operations to a Standby CommServe host.

By using a SnapProtect proxy, you are not required to update the DNS or host file entry with the CommServe host name on all the client computers after a disaster recovery.

Depending on the CommCell environment and your disaster recovery requirements, you can configure one or more SnapProtect proxies for alternate routing.

The SnapProtect proxy discussed here is used only in the event of a disaster. If you have other SnapProtect proxies configured for firewall access in your network, turn off the CommCell Services on the SnapProtect proxies created for disaster recovery to avoid using these disaster recovery proxies for routing regular network traffic.

Prerequisites

  • Prepare the standby CommServe host by installing the CommServe software and applicable service packs and updates.
  • The standby CommServe host must use the same CommServe client name as the production CommServe host. To achieve this, do one of the following:
    • Install the CommServe software using a floating CommServe name on both the production and standby CommServe host. For detailed information, see Building a standby CommServe host.
    • After restoring the Disaster Recovery backup on the standby CommServe host, use the Disaster Recovery tool (CommserveDisasterRecoveryGUI.exe) to change the CommServe host name to standby CommServe host. For detailed instructions, see Restoring CommCell Operations on the CommServe Host.

       Also, before starting the CommCell services on the standby CommServe host, open Windows Registry Editor and modify the following additional settings to reflect the production CommServe client name:

      • HKEY_LOCAL_MACHINE\SOFTWARE\CommVault Systems\Galaxy\Instance<xxx>\sPhysicalNodeName
      • HKEY_LOCAL_MACHINE\SOFTWARE\CommVault Systems\Galaxy\Instance<xxx>\CommServe\sCSCLIENTNAME
      • HKEY_LOCAL_MACHINE\SOFTWARE\CommVault Systems\Galaxy\Instance<xxx>\Machine\<client_name> folder

      Make sure that CommCell services are turned off on the production CommServe host.

  • The SnapProtect proxy must be located in a safe place not affected by a disaster impacting the production CommServe host.

To set up a SnapProtect proxy for a disaster recovery environment, perform the following tasks in the order listed:

  1. Configure SnapProtect proxy
  2. Configure the proxy settings on the client computer group
  3. Add the client computer group to the SnapProtect proxy
  4. Configure proxy settings on the CommServe client computer
  5. Push the firewall configuration to each component in the following order
    • Client computer groups
    • SnapProtect proxy
    • CommServe client computer

Related Topics

Building a Standby CommServe Host for Disaster Recovery

Firewall