Ensure PXE Boot images are synchronized between the Production (PROD) and Disaster Recovery (DR). Refer to KB article ID 18339 "Migrating PXE files from one DS to another" for an outline on how to synchronize servers.
This step will ensure that all boot image configurations are the same across both Deployment Servers and will allow the PXE Server to come back on-line against the DR Deployment Server without having to download boot images upon fail-over.
PXE Server will check into the Disaster Recovery Deployment Server and download the DR PXE Server configuration (which has been synchronized as per above). A new PXE.INI file will be downloaded from the DR Server.
PXE Server will check into the Production Deployment Server and will have registered with the same details as prior to the fail-over.
It is critical that you backup the PXE.INI file on the PXE Server to ensure that duplicate GUID registration entries for the same host within the PXEManager.ini are not generated. Having duplicate PXE Server GUID registrations against the same host/IP address has been known to cause the PXE Manager service to fail.
1 Replace any existing backup file with the latest version.
2 If there is an existing RPC.INI.DR file on the PXE Server from a previous fail-over operation then this file should be used.