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DLT 35/70 Flashing Leds

TomasLarsson
Occasional Advisor

DLT 35/70 Flashing Leds

I have an Compaq DLT 7000 35/70GB drive.

Whenever I am trying to load media, all righthand leds starts flashing after a while.
If I press the unload buttom, the drive re initilizes and start move the media, forward and reverse, and the lights comes on again.

This is not a dropped leader problem, since I have checked this.
The cartridge is new and seems to be OK.
12 REPLIES
Jacob Zeeman
Valued Contributor

Re: DLT 35/70 Flashing Leds

Hi Tomas,

If all LEDs on the right hand side are flashing this usually means a servo or mechanical problem. And often indicates a dropped leader, since you've verified that the leader is intact it could very well be a motor issue. There's not much we can do about this kind of problem besides checking the firmware.

You can check the firmware using HP Storage Works Library and Tape Tools. This can be downloaded from the following website:

http://www.hp.com/support/lttdownload

Hope this helps.

Jake Zeeman
HP Server Storage
Yarr!
TomasLarsson
Occasional Advisor

Re: DLT 35/70 Flashing Leds

I have tested the drive with the L&TT tool.
the result is Passed on all tests, on those occations when the media is loaded correctly.
Jacob Zeeman
Valued Contributor

Re: DLT 35/70 Flashing Leds

Hi Tomas,

Was the firmware up to date?

Which test did you do? Was it the drive assessment test, or a read write test?

Jake
Yarr!
TomasLarsson
Occasional Advisor

Re: DLT 35/70 Flashing Leds

The firmware is updated, I did all tests.

Strange things, when I have the drive sitting on my desk, with only power connected, it seems to load/unload OK, but when I put it in the box, it starts to missbehave.
TomasLarsson
Occasional Advisor

Re: DLT 35/70 Flashing Leds

One thought though, It might be that the problems occured after FW upgrade.
Is there any differences between the HP/Compaq FW and the version on Quantums homepage.

Now I tried to downgrade the FW to the previous 097 version, but L&TT will not allow me to do this, it seems that I need some sort of PW, if so where can I get it?
Marino Meloni_1
Honored Contributor

Re: DLT 35/70 Flashing Leds

could you generate a Sticket and attach it here?

The cause may also be that the power is not enough, and the device is continusly rebooting.

try to attach it on another power supply

marino
TomasLarsson
Occasional Advisor

Re: DLT 35/70 Flashing Leds

Ok Here it is
Marino Meloni_1
Honored Contributor

Re: DLT 35/70 Flashing Leds

ok, looks like your dlt is overheeting

this is the error logged when all led light

Event # 23 - Packet # 204 - SCSI Event: Over-temperature condition

you need to cool the drive when in the server this may damage also the tapes, and you may have trouble with those tapes in the future

marino
TomasLarsson
Occasional Advisor

Re: DLT 35/70 Flashing Leds

I think that one happend when the box was opened, is there any way to reset and clear the errorlog of the drive, so I can find out what is new and what is old.
Marino Meloni_1
Honored Contributor

Re: DLT 35/70 Flashing Leds

no you cannot clear the log, but it report the time, and the overtemp occured around 7 days ago assuming it was always powered
you now have 19673 POH
the error occured at 19507 POH

(POH mean Power On Hours)

Marino Meloni_1
Honored Contributor

Re: DLT 35/70 Flashing Leds


Also, extracting from the logs at POH 19630 that is equal to less that two days ago, several A402 errors where logged
>>A402 This event indicates the drive has detected something out of the ordinary during normal operations. This could be items such as a dropped leader, or an error internal to the drive. If this is a hard error the drive will not be functional for reading, writing, or successfully loading or unloading the media. This event may be a recoverable event indicating something at that time was not correct. Multiple events of this type would be a better indicator that there may be a problem with the drive or the piece of media being used. Look for how frequent the events are being logged and how they relate to the media ID.

Event # 34 - Packet # 215 - Event: A402 {Drive Error Log} [V109-0 15-SEP-2003] 000:00:51.848 POH/PC= 19630/237
20000000 00000101 >0082>0002 000000B7 00020020 00810010 00000B9A 056F4D24

>0082
0080h-009Fh Servo Errors Possible drive, try multiple media
>0002
bit 01 â Drive is in the Process of Loading a tape but has not entered the calibration phase of the load


000000>01 >15>040000 4A490000 0000F1DE 05B50000 00000000 00000000 00000000

>01 >15>04
this is the sense code:
SK 04 ASC 15 ASCQ 01 meaning: MECHANICAL POSITIONING ERROR

this may be caused by a defective drive or a defective tape
TomasLarsson
Occasional Advisor

Re: DLT 35/70 Flashing Leds

Thanks for your effort, New things (sh.t) happens.
Today, well half an hour ago, the drive teared off the leader, as it didn't know when the media was fully rewinded.
Now a thought crossed my mind, I assume that the "tape-end" sensor is a led-barrier, and what if the sensor/led is dirty so the drive doesn't recognise the holes in the leader.

Now, question is what to do, get a new leader, or ditch the whole drive.