Maintenance Saturday August 31st 2013 Midnight-1AM

We will be taking various machines down for imaging and rebooting August 31st just after midnight, that is early Saturday morning.

This is necessary to create images for rapid restoration and to upgrade to a newer Linux kernel.

Downtime for any one machine should not exceed about fifteen minutes, but various servers will be affected when the main NFS server is rebooted, so there will be a time when other machines freeze in addition to their rebooting.

I expect maintenance activities will be concluded by approximately 1AM.

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