Windows Operating System Environments

scans for devices. You should see messages similar to:

Bus	Target	Lun	Device
0	0	0	Quantum Ultrium 4

If the tape drive is recognized during system startup, the problem has been resolved. Otherwise, proceed to step 3 to determine whether the tape drive is receiving power.

3.If the tape drive is not recognized when the SAS controller scans for devices, check the two-color status LED on the LTO-4-120 Half-Height tape drive front panel to make sure the drive is receiving power (see Figure 4-1).

If the two-color status LED is not green, proceed to step 4 to check the power connections to the tape drive. If the two-color status LED is green, proceed to step 5 to determine whether the drive passed the Power On Self Test functions.

4.If the two-color status LED is not green, check the power connections to the tape drive.

a.Shut down the system, remove the cover, and re-seat the DC power cable connector on tape drive.

b.Restart the system and recheck the two-color status LED.

IF the two-color status LED is . . .	THEN . . .
off,	shut down the system, replace the power connector attached to the tape drive with one from a
	known working device such as a CD-ROM, and restart the system.
	If the two-color status LED:
	• Comes on green, then resolve the problem with the DC power cable/connector.
	• Remains off, then contact Technical Support to resolve the possible problem with the tape
	drive.

green,	repeat step 2 of this procedure to confirm that re-seating the DC power cable to the tape drive
	solved the problem and the tape drive is recognized during system startup.
	If the tape drive is:
	• Recognized during the SAS controller scan, then the problem is resolved. Reinstall the
	computer cover.
	• Still not recognized, then proceed to step 5 to determine whether the drive passed the Power
	On Self Test functions.

5.If the two-color status LED is green, but the tape drive is not recognized during the SAS controller scan, use the front panel LEDs to determine whether the drive passes the Power on Self Test (POST) functions. (See Figure 4-1 and Table 4-1.)

IF the LEDs show that the tape drive . . . the

POST functions,

	THEN . . .
fails	contact Technical Support to resolve the possible problem with the tape drive.
passes	proceed to step 6 to check for possible SAS problems.

6.If the tape drive displays indicate that the drive has passed the POST functions, check the SAS connections:

a.Shut down the system.

b.If possible, replace the SAS cable.

c.If checks a and b do not reveal a problem, contact Technical Support to resolve the possible problem with the tape drive.

Computer Software Does Not Recognized the Tape Drive

Depending on your operating system environment, see the following subsections for troubleshooting guidelines if the LTO-4-120 Half-Height tape drive is recognized by the system hardware at startup, but not by the operating system or applications.