IBM 392, 387, 393, 391, 389, 388, 441, 390 manual Symptom, Action

Symptom		Action
	5.	Replace the non-hot-swap hard disk drive.
A newly installed hot-swap hard disk drive is not	1. Make sure that the drive is installed into the correct
recognized.		drive bay.
	2.	Restart the server.
	3.	Remove the drive from the bay, wait 45 seconds,
		and reinsert the drive into the bay, making sure that
		the drive connects to the hot-swap hard disk drive
		backplane.
	4.	Run any diagnostic programs to test the hard disk
		drive.
	5.	Make sure that the hot-swap hard disk drive
		backplane is correctly seated. When it is correctly
		seated, the drive assemblies correctly connect to the
		backplane without bowing or causing movement of
		the backplane.
	6.	Make sure that the cable connection is correct. See
		“Connecting cables” on page 38.
	7.	Reconnect the backplane power cable and repeat
		step 1 through step 4.
	8.	Reconnect the backplane signal cable and repeat
		step 1 through step 4.
	9.	If you suspect a problem with the backplane signal
		cable or the backplane:
		a. Replace the affected backplane signal cable.
		b. Replace the affected backplane.
Multiple hard disk drives fail.	1. Run any diagnostic programs to test the hard disk
		drives.
	2.	Make sure that the cable connection is correct. See
		“Connecting cables” on page 38.
	3.	Reconnect the power cable.
	4.	Reconnect the signal cable.
	5.	Replace the affected signal cable.
	6.	For hot-swap hard disk drives, if you suspect a
		problem with the backplane, replace the affected
		backplane.
Not all drives are recognized by the hard disk drive	Remove the drive(s) that are not recognized by the
diagnostic test.	diagnostic test. Then, run the hard disk drive diagnostic
	test again. If the remaining drives are recognized, replace
	the drive(s) that you removed.
The server stops responding during the hard disk drive	Remove the hard disk drive that was being tested when
diagnostic test.	the server stopped responding and run the diagnostic
	test again. If the hard disk drive diagnostic test runs
	successfully, replace the drive that you removed with a
	new one.
A hard disk drive was not detected while the operating	Reinstall all hard disk drives and reconnect cables. Then,
system was being started.	run the hard disk drive diagnostic test.

Chapter 7. Troubleshooting and diagnostics 171