LMU response error 1

[roadbadger]

We have started getting a few response errors from our LMU. The subsequent messages vary, from drive unload failure to tape pick issues, any idea what might be up?

 

[STKman]

Not enough info there to be of much help, maybe a gripper starting to go on one of the hands. If you can post the SLS messages at the time of problem that might help.
Is LMU maintenance on? if so, what is in the SAE or ERL log?

 

[roadbadger]

Does this help:

SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/398 REQ B MOUNT VOL 500057 SRC 00/03:13:11 CEL TGT 00/10:11:00 DRV 725
SLS0699I RESPONSE ACS 00 SEQ 01/398 ERR 09/71 NO DRIVE AVAIL. AT ADDRESS CART NOT MVD
SLS0120E MOUNT OF 500057 ON DRIVE 0725 - LMU ERROR 65156515 ACS 00
SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/867 REQ B MOUNT VOL 300193 SRC 00/03:02:07 CEL TGT 00/10:11:00 DRV 725
SLS0699I RESPONSE ACS 00 SEQ 01/867 ERR 09/71 NO DRIVE AVAIL. AT ADDRESS CART NOT MVD
SLS0120E MOUNT OF 300193 ON DRIVE 0725 - LMU ERROR 65156515 ACS 00
SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/694 REQ C DISMOUNT VOL 800539 SRC 00/10:02:00 DRV 68A TGT 00/17:13:00 CEL
SLS0699I RESPONSE ACS 00 SEQ 01/694 ERR 09/77 CAN'T UNLOAD CART NOT MVD
SLS0112E SWAP OF 800539 ON DRIVE 068A - LMU ERROR 65156515 ACS 00
SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/716 REQ C DISMOUNT VOL SCRTCH SRC 00/10:02:00 DRV 68A TGT 00/00:00:00 CEL
SLS0699I RESPONSE ACS 00 SEQ 01/716 ERR 09/77 CAN'T UNLOAD CART NOT MVD
SLS0117E DISMOUNT OF ?????? FROM DRIVE 068A - LMU ERROR 65156515 ACS 00
SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/737 REQ C DISMOUNT VOL SCRTCH SRC 00/10:02:00 DRV 68A TGT 00/00:00:00 CEL
SLS0699I RESPONSE ACS 00 SEQ 01/737 ERR 09/77 CAN'T UNLOAD CART NOT MVD
SLS0117E DISMOUNT OF ?????? FROM DRIVE 068A - LMU ERROR 65156515 ACS 00
SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/764 REQ C DISMOUNT VOL 800539 SRC 00/10:02:00 DRV 68A TGT 00/17:13:00 CEL
SLS0699I RESPONSE ACS 00 SEQ 01/764 ERR 09/77 CAN'T UNLOAD CART NOT MVD
SLS0868I LMU ERROR 65156515 ACS 00
SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/801 REQ C DISMOUNT VOL SCRTCH SRC 00/10:02:00 DRV 68A TGT 00/00:00:00 CEL
SLS0699I RESPONSE ACS 00 SEQ 01/801 ERR 08/07 DRIVE NOT COMMUNICATING CART NOT MVD
SLS0117E DISMOUNT OF ?????? FROM DRIVE 068A - LMU ERROR 65156515 ACS 00
SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/297 REQ B MOUNT VOL 800331 SRC 00/07:12:10 CEL TGT 00/10:00:00 DRV 688
SLS0699I RESPONSE ACS 00 SEQ 01/297 ERR 10/10 DRIVE CAN'T LOAD CARTRIDGE RET'D TO SRC LSM 00
SLS0120E MOUNT OF 800331 ON DRIVE 0688 - LMU ERROR 65156515 ACS 00
SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/672 REQ C DISMOUNT VOL 500204 SRC 00/10:14:00 DRV 728 TGT 00/15:00:17 CEL
SLS0699I RESPONSE ACS 00 SEQ 01/672 ERR 09/77 CAN'T UNLOAD CART NOT MVD
SLS0117E DISMOUNT OF 500204 FROM DRIVE 0728 - LMU ERROR 65156515 ACS 00
SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/109 REQ B MOUNT VOL 800331 SRC 00/07:12:10 CEL TGT 00/10:01:00 DRV 689
SLS0699I RESPONSE ACS 00 SEQ 01/109 ERR 10/10 DRIVE CAN'T LOAD CARTRIDGE RET'D TO SRC LSM 00
SLS0120E MOUNT OF 800331 ON DRIVE 0689 - LMU ERROR 65156515 ACS 00
SLS0662I LMU RESPONSE ERROR - 00,000,18,00
SLS0698I REQ ACS 00 SEQ 01/962 REQ C DISMOUNT VOL 300055 SRC 00/10:16:00 DRV 730 TGT 00/15:00:17 CEL
SLS0699I RESPONSE ACS 00 SEQ 01/962 ERR 09/77 CAN'T UNLOAD CART NOT MVD
SLS0117E DISMOUNT OF 300055 FROM DRIVE 0730 - LMU ERROR 65156515 ACS 00

 

[STKman]

Its hardware. It looks like you have a problem in the 9741 cabinet on LSM panel 10, just to the right of the door. You have two columns of 9x40 drives. The drives giving trouble are:

688 (drive cannot load)
689 (drive cannot load)
68A (drive not communicating)
725 (no drive available)
728 (drive cannot unload)
730 (drive cannot unload)

Volume 800331 has failed to load on both 688 & 689. You should eject it and check it out.

Aside from that, if we assume that there is a single issue causing all the problems, then it's likely related to the storage cabinet. The problems seem much worse with drives near the top of the cabinet. This will happen if either the 9741 cabinet or the LSM wall have slipped out of spec, and are no longer aligned (relative to the hands) within 1/4 inch of spec. Its not something you can check by sight. It needs a special tool. You can sometimes get round this by doing a long IPL from the LMU.

The problem will be worse if one or both grippers are starting to go, so give your CE a slot to check them out, and maybe to also do a long IPL at the same time.

Another possibility is the TTI cable (two wire twisted pair)that daisy chains through all the drives in the cabinet. Its easy damaged when you replace drives. If it goes intermittent you get 'not communicating' errors to the drives, as happenned with 68A and 725. You also get communication type failures if a drive starts to IPL itself to recover from a problem.

So there are quite a few areas to look into. If the LMU has maintenance enabled then there will be logs that can be checked there also.

Hope all this is some use.
Regards,
STKman.

 

[roadbadger]

STKman,

Thanks, there was a problem with tape 800331, and some other issues. Once again thanks for your help.

Roadbadger