How to Make a Server Active Following a Failure Where Both Servers are Affected (e.g. Power Outage)

Follow

Summary

This Knowledgebase article provides information about how to reconfigure a server to make it active after a failure where both servers are affected.


More Information

If you experience a power outage, or any other problem which triggers both servers to reboot at the same time, the default behavior of Neverfail Heartbeat is to stop, and both servers will not be contactable on the network (passive). This behavior is by design to protect data integrity.

Should this occur, it will be necessary to configure one of the servers to be active manually.

To do this you must perform the following steps:

  1. Check the integrity of both your data and your Hardware.
  2. Try to determine the cause of the failures and repair them if possible.
  3. Decide which server you would like to make active and which passive.

    For Neverfail Heartbeat v5.5.1 and prior:

    On the Server that you would like to make active:

    1. Go to Start -> All Programs -> Neverfail -> Configure Server .
    2. Select 'Machine' tab and set the role as active.
    3. Click on Finish.

    On the Server that you would like to make passive:

    1. Go to Start -> All Programs -> Neverfail -> Configure Server .
    2. Select 'Machine' tab and set the role as passive.
    3. Click on Finish .

    For Neverfail Heartbeat v6.0.1 and later:
  4. On any server in the group:

    1. Go to Start -> All Programs -> Neverfail -> Configure Server .
    2. Select 'Machine' tab and designate which server should be in the Active state by selecting the corresponding radio button in the 'Active Server' section.
    3. Click on Finish.

  5. Start Neverfail on the passive server.
  6. Once Heartbeat has started on the passive server start Heartbeat on the active server.

Neverfail Heartbeat will now connect across the channel and perform a full system check. Once the system check has completed, the system should display both the registry and file system as synchronized and replicating.

Neverfail recommends that you use different UPS boxes for the servers and different switches. If it is not possible to use two UPS boxes, then Neverfail recommends that only one of the servers be plugged in; usually the Primary – active server.

Also, if the UPS system includes power management software, such as Powerchute, it may be possible to request a switchover when the UPS battery is low. Contact Support for more information.

Applies To

All Versions


Related Information

None

KBID-337

0 out of 0 found this helpful

Comments

0 comments

Please sign in to leave a comment.