Protecting Full Systems › Configuring Master and Replica for Full System Scenarios

Configuring Master and Replica for Full System Scenarios

Full system scenarios require three hosts instead of two, typical for other Arcserve RHA scenarios:

• Master server - is the host that you want to protect. This host can be physical or virtual.
• Appliance - is a VM where you installed the Arcserve RHA Engine.
• Virtual Platform Host - is the server where the Appliance VM is running.

To configure the Master server:

For Full System scenarios, the Master can be any Windows machine, physical or virtual, supported as both a guest OS in the virtual environment and by the Arcserve RHA engine. For a complete list of supported operating systems, see the Arcserve RHA Release Notes.

To configure the Appliance:

Configure a virtual machine as follows:

• For Xen platforms, install XenServer Tools on the Appliance VM.

  Be aware of the following recommendations:

  • XenServer 6.1.0 provides two versions of XenServer tools: Standard and Legacy. Xenserver 6.0 and previous versions only supports legacy version. If the master is Xenserver 6.1 and you want to protect it in Xenserver 6.0, install legacy version of the tool. If you already have the standard version, replace it with the legacy version. For more information on how to install the legacy version and how to replace the standard version with the legacy version, visit the link http://support.citrix.com/article/CTX135099.
  • If your virtual platform is Citrix Xen 6.0, install the .NET 4.0 Framework on the protected master. The .NET 4.0 Framework is required for installing the XenServer tool on the virtual machine that the appliance created.
• For ESXi and vCenter platforms, install VMware Tools on the Appliance VM.
• Install the Arcserve RHA Engine on the Appliance VM.
• For Amazon EC2, ensure that the date and time are correct and synchronized to your system and the network can access AWS.

The Appliance VM acts as the Replica in Full System scenarios. Data is replicated to virtual disk files stored in the appliance. If a failover is triggered, a new VM is created and the virtual disk containing replicated Master data is attached to this new VM.

Important! Do not manually delete the virtual machine, its configuration, and virtual disk files, otherwise, the scenario can fail.

Troubleshooting "The snapshot chain is too long" Error

When you are creating bookmark or performing AR testing for an appliance running on Citrix XenServer and you might encounter the following error:

The snapshot chain is too long

To resolve this error, see the following link:

http://support.citrix.com/article/CTX133470