A hardware failure of a boot disk of the fileserver stack was reported Friday morning June 22. We decided to repair this after working hours. Thus at approximately 17:00 the defective boot disk was removed from the machine and replaced by a spare one. Enabling the disk, making it bootable, restoring file systems and rebooting the machine (after removing all snapshots) took a lot of time. When this was resolved Friday evening, the NFS/SMB fileservice was not active on the mounted filesystems. It took a reboot Sunday evening to resolve all problems.