There might be an issue with the harddisk, you can run the diagnostics on the server to make sure ,since this is a new server you should be in warranty,hp should be able to replace the defective disk.
Hi HGN, as you said hdd has to replace,but very often this noise is happen in ml150 model. The noise which is coming from the server is it normal or not.
Confusing, what type of noise you monitor from ML150, also Generation x? Is noise from HDD or actual Fan or Buzzer / sound? Grind, squeaky ... after O/S loads, boot to any bootable medial and let it stand for longer - can you detect same noise?
.... acoustic characteristics during power up initialization that may be incorrectly interpreted as improper disk drive operation. The sound or noise occurs approximately ten seconds after power is applied to the hard drive .....
Sounds to me as if the Hard Disk has a mechanical problem, bearing noise. This is a common problem with the OEM disks HP uses. No diagnosics will show any problem if the bearing is just bad. Replace the drive.
