Creating a Backup Operating System

If the appliance will support the ability to failover to a backup copy of the OS, you will need to create one.

To create a backup OS

  1. Create a primary partition for the backup OS according to requirements outlined in Partitioning, Formatting, and Installing the Main Disk.

  2. Set the backup OS partition to be active.

  3. Install Microsoft Windows 2000.

    Note   The backup OS receives the same computer name as the primary OS. During setup, this computer must not be made part of a domain because the duplicate-name structure required for the reliability feature will be rejected by the Microsoft® Active Directory™ directory service of Microsoft Windows. Instead, set up the computer as part of a workgroup.

  4. Follow the steps for Creating a Primary Operating System.

  5. In order to use the failover functionality of the Reliability Services, use the table below to add the appropriate value to the registry under HKLM\System\CurrentControlSet\Services\vmnvram\Parameters.

    Value Type Description
    PrimaryOS REG_DWORD Must be set to zero (0) to indicate Backup OS

    Must be set to one (1) to indicate Primary OS

A critical alert will be raised on the Web UI and local UI when the system boots into the backup OS.

The disk is now a master and is ready to be copied to create disks for individual appliances.