Disaster Recovery

Troubleshooting Disaster Recovery on Windows

 

'System may not boot after disaster recovery.

 

If the boot and system volumes are both physically located below 7.8

 

GB, this error message can be ignored. The boot and system

 

partitions on Windows NT 4.0 must namely be physically bellow the

 

first 7.8 GB due to the operating system limitations. Refer to MSDN

 

Q224526.

Problem

Blank Screen During Recovery

 

Certain system configurations have been encountered where the video

 

display does not work, if Windows is started in safe mode. This error is

 

not related to Data Protector and can occur even if only Windows is

 

installed.

Action

If the screen is blank during disaster recovery, this does not mean that

 

the recovery has failed. You can monitor the progress of disaster recovery

 

on the Cell Manager or use ping and telnet 5555 (or appropriate)

 

commands from another client to see if the target system responds.

 

Other indicators that the recovery is still in progress are that the device

 

is working and that hard disk lights are blinking.

 

If the target system responds to ping and telnet 5555 commands, but

 

hard disk lights are not blinking and the device is not active, it is

 

possible that the auto logon failed. Press Enter to log on using the

 

administrator’s account with a blank password.

 

The display on the restored system will then work just as it did at

 

backup time.

Problem

Network is Not Available During Restore

Action

Ensure that the problem is not with switch, cables, etc. Another

 

possibility is also that the DNS server (as configured at backup time) is

 

offline during the restore. Since the configuration of the DR OS is the

 

same as at backup time, the network will not be available. In this case

 

perform offline restore and change the DNS settings after recovery. You

 

can also edit the registry

 

(HKey_Local_Machine\SYSTEM\CurrentControlSet\Services\Tcpip\

 

Parameters) before Phase 2 is started. In this case you have to reboot

 

before Phase 2 for the changes to take effect. After Phase 2 finishes, you

 

can correct the settings before Phase 3 can be started.

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Chapter 10