Hi, All.

Over the last few weeks I have been gradually upgrading the cluster's 
nodes to the latest version of our Linux distribution. I've been able to 
do this without significant impact on the cluster by removing a few 
machines at a time for upgrade.

At some point I will need to perform the upgrade on the head node, and 
this involves downtime for the entire cluster. Could you decide amongst 
yourselves a good time to do this? The down time should be less than two 
hours.

I leave the department on the 23rd of December, so it will have to be 
sometime in the next three weeks!

Thanks.

-- 
James Carter, Senior Experimental Officer