Regatta node TO and TRE had downtime from 08:00 to 12:45
for update of firmware.

Regatta node EN had downtime from 08:00 to 16:00
for update of firmware and change of 32GB memory module.
This node had problem booting from root-disks after hardware changes.
Moving the disks to TO and back again made EN bootable (unclear why).

Linux cluster FIRE had downtime from 08:00 to 16:00 due to dependancy on disks on EN.