planning for a network outage

[Adam Noble]

Hi all,

We are planning to have a 4 hours network outage on site. We were planning to leave the servers up and running during this period. I am aware that a HPUX will recover from a network glitch however unsure how it will react to a 4 hour outage. Will the connection be re-established as soon as the connectivity returns or will we manually need to re-enable the interface? Also what other considerations are there. I'm not concerned about the application side as this is being managed

I'm thinking about logging areas filling up....will certain OS products need re-starting after the work. At this moment I am unsure why we would not want to shutdown prior to the work and re-boot after but this is not being proposed. Maybe I'm looking to argue this case.
The servers are running a mix of HPUX 11.00 and 11.11

Regards

[Peter Godron]

Adam,
if you have Service Guard:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1035419

If you are using Oracle listener.log

If your applications are all shut down, there will be no requests for network activity, so the logs should not be over-used.

No real need to re-start anything.

Other areas
NFS
mail

[Adam Noble]

Thanks Peter we are managing the service-guard aspect as that was our biggest concern.

[Pete Randall · Accepted solution]

Adam,

I'm not in a Service Guard environment so I can't really speak to that aspect of your question. In our shop, however, it is not uncommon for the Network folks to come in on a weekend to do installations/upgrade/maintenance and they are quite often down for hours at a time, during which my HP machines blissfully continue to run. When the network comes back, things automatically get re-connected and life goes on.

Back in the old days NFS was always an issue. It didn't always reconnect like it should and we would have to reboot the HP servers to get everything up and running again. Since 11.x, however, there has been no such issue.

Good luck.


Pete