This happens on a X4170 system running on windows server 2008 R2.
Any advice from the mass is greatly appreciated.
Seems like a bug / Firmware issue to your disks please find the attachment indicated the respective firmware for your HDD .
FRU or CRU P/N
Raw Disk P/N
FW with Fix
146GB 10000 RPM Disk
Hope this might be helpful to a certain extent.