Hello tia This is normal behavior. The S110 is a driver based RAID controller. Because of this some functionality is not present until all software is installed and functional within the operating system. The status LEDs are only operational if OpenManage is installed. You can reference page 69 of the S110 user's guide for more information: [URL] Thanks
After installing OMSA on my PE T-320 from the factory disc, I noticed the indicator lights on the right hand side of my SATA drives are solid green.  They were not illuminated prior to this.  Uninstalling OMSA returns them to their previously un-illuminated state. I have RAID5 / PERC S110. System documentation references ACHI mode being active when led is off. Is this normal behavior? tia
PE T-320 Openmanage and Drive Lights