v Follow the suggested actions in the order in which they are listed in the Action column until the problem issolved.v If an action step is preceded by “(Trained technician only),” that step must be performed only by a trainedtechnician.v Go to the IBM support website at http://www.ibm.com/supportportal/ to check for technical information, hints,tips, and new device drivers or to submit a request for information.Symptom ActionA green hard disk drive activityLED does not accuratelyrepresent the actual state of theassociated drive.If the green hard disk drive activity LED does not flash when the drive is in use,run the DSA Preboot diagnostic programs to collect error logs (see “Running theDSA Preboot diagnostic programs” on page 151).v If there is a hard disk drive error log, replace the affected hard disk drive.v If there is no disk drive error log error log, replace the affected backplane.An yellow hard disk drivestatus LED does not accuratelyrepresent the actual state of theassociated drive.1. If the yellow hard disk drive LED and the RAID adapter software do notindicate the same status for the drive, complete the following steps:a. Turn off the server.b. Reseat the SAS/SATA adapter.c. Reseat the backplane signal cable and backplane power cable.d. Reseat the hard disk drive.e. Turn on the server and observe the activity of the hard disk drive LEDs.2. See “Problem determination tips” on page 178.Hypervisor problemsUse this information to solve hypervisor problems.v Follow the suggested actions in the order in which they are listed in the Action column until the problem issolved.v If an action step is preceded by “(Trained technician only),” that step must be performed only by a trainedtechnician.v Go to the IBM support website at http://www.ibm.com/supportportal/ to check for technical information, hints,tips, and new device drivers or to submit a request for information.Symptom ActionIf an optional embeddedhypervisor flash device is notlisted in the expected bootorder, does not appear in thelist of boot devices, or a similarproblem has occurred.1. Make sure that the optional embedded hypervisor flash device is selected onthe boot manager Select Boot Device at startup.2. Make sure that the embedded hypervisor flash device is seated in theconnector correctly (see “Removing a USB embedded hypervisor flash device”on page 292 and “Replacing a USB embedded hypervisor flash device” onpage 293).3. See the documentation that comes with the optional embedded hypervisorflash device for setup and configuration information.4. Make sure that other software works on the server.Chapter 4. Troubleshooting 157