Posts Tagged ‘rack’

Major server room remodeling

Wednesday, August 13th, 2014

Update Thursday 07:15 – all systems back to normal. whew.

Update Wednesday 11:00 – first rack back to normal. The picture shows how it looked during the remodeling.racks

Update Wednesday 07:00 – the most difficult part is over and the first rack is being retrofitted as we speak

All of D-PHYS’s important servers (and services: mail, homes, SAN, web) reside in two water-cooled racks in HIT D 13. On Wednesday, August 20 those racks will have to be retrofitted by our colleagues of Informatikdienste since certain spare parts are no longer available. We have an elaborate plan how to externally power the servers while the racks are offline that schedules a 5-minute downtime that most of you won’t even notice. However, there is a small chance that this external power supply does not work as expected which would lead to a longer interruption. Unfortunately we have no influence on the date, time and procedure of this modification and can only try our best to minimize potential consequences. So if something should go wrong next Wednesday, please don’t panic, we’ll be hard at work to fix it ASAP.
Thank you for your cooperation.

Maintenance Downtime of all Services on Wednesday, 7th of April 2010

Thursday, April 1st, 2010

On Wednesday, 7th of April 2010, starting at 6pm and lasting until approximately 9pm, there will be several maintenance downtimes for nearly all of our services due to several software upgrades and relocation of servers.

So if you’re using one of our managed workstations or thin clients, or use data residing on group drives, please save all your work and preferably log out/disconnect before Wednesday, 6pm. And even if the services seem back after the first short downtime, don’t expect to be able to work again from that point on since we will have several short but also some not so short service downtimes in a row.

Update, 20:30h: Most servers and workstations are back online. Not yet ready for usage are: fatboy, the IDL license server and the Condor master server. They will be back later tonight.

Update, 22:45h: fatboy is back online again. But two infrastructure servers (which haven’t been touched by today’s maintenance) seem to have hardware issues. Because of that the maintenance of the IDL license server and the Condor master server have been postponed until further notice.