Friday September 15 Bruce arrived at REAL about 830 PDT and heard a beeping sound from the REAL lab container. The sound was coming from the first rack inside the entrance door which contains the Aeolus server and an APC ups. It was very difficult to tell which unit was emitting the beeps. Shane shut the serer down and the beeps stopped and the ups was not showing any faults on the front panel. Shane contacted Colfax International (the server manufacturer) and it was determined that the alarm beeping was from the serer.Working with Shane it was determined that the sound was a disk failure alarm. The alarm was turned of via a remote loging to the server with the proper command. With the help of Colfax it was determined the the disk in bay 2 (bays numbered 0-7) was bad. The server is old and we were not able to communicate with it to our satisfaction. It should be possible to turn on a red led on the front of the drive but Shane was unable to execute the command because the chassis number of our server was not known. The disk has been identified by serial number and will be replaced when the procedure is approved by Colfax. The disk should be hot swapable but we don't want to do that without approval from Colfax.
The trouble shooting process took all day so no REAL lidar data were collected today. The weather was very calm and clear and under thaose conditions we do not see any coherent dust structures that can be used to make wind field estimates.