Table 40. Symptoms and user actions for hard disk drive problems (continued)v Follow the suggested actions in the order in which they are listed in the Action column until the problem issolved.v See Chapter 5, “Parts listing, System x3850 X6 and x3950 X6 Types 3837 and 3839,” on page 205 to determinewhich components are customer replaceable units (CRU) and which components are field replaceable units(FRU).v If an action step is preceded by (Trained service technician only), that step must be performed only by a Trainedservice technician.Symptom ActionA newly installed hard diskdrive is not recognized. 1. Set up the RAID configuration (see “Configuring RAID arrays” on page 147).2. Check the IMM event log for hard disk drive events and resolve the problem.3. If the LED is lit, remove the drive from the drive bay, wait 45 seconds, andreinsert the drive, making sure that the drive assembly connects to the harddisk drive backplane.4. Observe the associated green hard disk drive activity LED and the amberstatus LED:v If the green activity LED is flashing and the amber status LED is not lit, thedrive is recognized by the controller and is working correctly. Run the DSAhard disk drive test to determine whether the drive is detected (see“Running the DSA Preboot diagnostic programs” on page 175).v If the green activity LED is flashing and the amber status LED is flashingslowly, the drive is recognized by the controller and is rebuilding.v If neither LED is lit or flashing, check the hard disk drive backplane (go tostep 5).v If the green activity LED is flashing and the amber status LED is lit, replacethe drive. If the activity of the LEDs remain the same, go to step 5. If theactivity of the LEDs changes, return to step 1.5. Make sure that there is a hard disk drive backplane is present to install thedrive into.6. Make sure that the hard disk drive backplane is correctly seated. When it iscorrectly seated, the drive assemblies correctly connect to the backplanewithout bowing or causing movement of the backplane.7. Reseat the backplane power cable and repeat steps 1 through 3.8. Reseat the backplane signal cable and repeat steps 1 through 3.9. The backplane signal cable or the backplane is the potential problem:a. Replace the affected backplane signal cable.b. Replace the affected backplane.10. Run the DSA tests for the SAS/SATA adapter and hard disk drives (see“Running the DSA Preboot diagnostic programs” on page 175).v If the adapter passes the test but the drives are not recognized, replace thebackplane signal cable and run the tests again.v Replace the backplane.v If the adapter fails the test, disconnect the backplane signal cable from theadapter and run the tests again.v If the adapter fails the test, replace the adapter.11. See “Problem determination tips” on page 200 for more information.12. Check for Retain Tips for related issues on IBM Support web site athttp://www.ibm.com/supportportal/.13. If the problem persist, contact IBM Support.182 System x3850 X6 and x3950 X6 Types 3837 and 3839: Installation and Service Guide
