Overview
Standard "lift-and-shift" migration via Nutanix Move is not supported for the Druva Phoenix Backup Store (PBS). Because the PBS is a purpose-built appliance with deep kernel-level dependencies for storage (ZFS) and networking (NFS), moving the existing VM image can lead to driver conflicts and data corruption. To ensure a stable and supported environment on Nutanix AHV, the appliance must be redeployed as a fresh instance and re-registered to the Druva Cloud.
Problem Statement
Standard migration utilities inject new VirtIO drivers and modify guest tools to facilitate the move to AHV. For a specialized appliance like the Druva PBS, these modifications often lead to:
Storage Incompatibility: Failure to mount or import ZFS pools.
Service Instability: Conflicts between Nutanix Guest Tools and Druva’s hardened OS configurations.
Performance Issues: Degraded RMAN backup speeds or network timeouts.
Solution: New Deployment Strategy
To transition to Nutanix AHV, you must deploy a fresh instance of the PBS and register it to your existing Druva Cloud environment.
1. System & Hardware Requirements
Before provisioning the new VM on Nutanix AHV, ensure the environment meets the minimum compute, memory, and storage specifications.
Hardware Specifications: For detailed hardware requirements for the Phoenix Backup Store, refer to the official documentation: System requirements for Oracle PBS
2. Installation & Registration
The migration involves installing the Druva PBS Debian package onto a clean Ubuntu 22.04 instance. Do not attempt to copy the virtual disk (VMDK) from the old VMware instance.
Official Procedure: Follow the step-by-step instructions in the Druva Documentation: Deploy and register Phoenix Backup Store
Maintenance Guidelines
Dedicated Instance: To maintain appliance integrity, the server should remain a dedicated instance. Installing third-party software or using it as a general NFS server may interfere with Druva-managed mounts.
Maintenance Windows: Only apply OS patches or reboots when there are no active RMAN backup or restore jobs to prevent data corruption.