Summary: Strange RZ29B-W problem

From: Tom Leffingwell <tom_at_sba.miami.edu>
Date: Thu, 14 Jun 2001 11:53:23 -0400 (EDT)

        Thanks to Tom Blinn and Werner Hahling for their replies which
were included below. It seems likely that my disk, which had been powered
on for a long time, had a lubrication problem, where the motor no longer
has enough torque to start the disk spinning again. I tried his techinque
(included in the last email) but unfortunately I couldn't get it going
again.

-Tom

---------------1st reply------------------


>From tpb_at_doctor.zk3.dec.com Thu Jun 14 11:49:37 2001
Date: Thu, 07 Jun 2001 16:55:36 -0400
From: "Dr. Thomas.Blinn_at_Compaq.com" <tpb_at_doctor.zk3.dec.com>
To: Tom Leffingwell <tom_at_sba.miami.edu>
Subject: Re: Strange RZ29B-W problem


>
> I have an RZ29B-W that was working in an AlphaStation 500/500 until we
> temporarily added a second one to the bus. At this point the original one
> stopped working, even after removing the second one, so the configuration
> was the same as before we touched it. There were no conflicting IDs
> between devices or the controller itself, and termination is correct.
> Its in the same state as it was before we added the other disk.
>
> It no longer shows up in show dev, but the LED on the front of the RZ29B-W
> flashes in a continous pattern that repeats itself after a long pause:
>
> -...--..
>
> - being a long flash, and . being a short flash
>
> I don't have any documentation that describes how to interpret the
> LED. Does anyone have any such documentation?
>
> Thanks,
>
> Tom

I don't have such documentation, and I will be surprised if you can find
anyone who does who will see your message.

I trust you have power cycled all the equipment along the way, and that
the drive is behaving in the way you describe after a power up.

It seems unlikely that host software (e.g., the console) is causing the
flashing pattern, it's probably an error indication from the drive's own
firmware. I'd bet you have a dead drive, and it's just coincidence that
it failed as you were adding the second drive. In fact, it might well
have failed because of being power cycled.

Tom
 
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-------------Next reply-------------




>From hahlingw_at_nqn.newsltd.com.au Thu Jun 14 11:49:54 2001
Date: Fri, 8 Jun 2001 10:00:39 +1000
From: "Hahling, Werner" <hahlingw_at_nqn.newsltd.com.au>
To: 'Tom Leffingwell' <tom_at_sba.miami.edu>
Subject: RE: Strange RZ29B-W problem

Does the drive actually spin up???


if NOT, then remove it from the drive bay - put it flat on a table and give
it a jerk twisting motion clockwise or anti-clockwise.


This is a known problem fro RZ29's that have been spinning for a long time
and the are getting powered off. All the bearing grease has been spun to the
perimeter of the bearing and now the spindle shaft has ceased up on you and
the little motor of the drive has not enough torque to re-start the motor.

Once re-started they are usually OK to power off and on again to re-install
into the drive bay.


regards (and good luck)



Werner Hahling
(ex. digital)
Systems Analyst and Support
North Queensland Newspapers
 
Phone: 61-7-4722 4442
Fax: 61-7-4721 1410
email: hahlingw_at_nqn.newsltd.com.au <mailto:hahlingw_at_nqn.newsltd.com.au>

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-----Original Message-----
From: Tom Leffingwell [mailto:tom_at_sba.miami.edu]
Sent: Friday, 8 June 2001 6:14
To: tru64-unix-managers_at_ornl.gov
Subject: Strange RZ29B-W problem



I have an RZ29B-W that was working in an AlphaStation 500/500 until we
temporarily added a second one to the bus. At this point the original one
stopped working, even after removing the second one, so the configuration
was the same as before we touched it. There were no conflicting IDs
between devices or the controller itself, and termination is correct.
Its in the same state as it was before we added the other disk.

It no longer shows up in show dev, but the LED on the front of the RZ29B-W
flashes in a continous pattern that repeats itself after a long pause:

-...--..

- being a long flash, and . being a short flash

I don't have any documentation that describes how to interpret the
LED. Does anyone have any such documentation?

Thanks,

Tom
Received on Thu Jun 14 2001 - 15:54:13 NZST

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