RE: Temporary tape errors

In March of 2013, I had the below error which required a 8205-E6C motherboard be replaced.
Every component was removed, sitting on a table, have a picture, wish I could send it.
I was scared.
The HMC hardware wizard, 400 steps, guided the entire process.
CE did a great job.
One part was a tight fight, had to improvise.
Started at 23:30 backup by 3:45.
Took 2 IPL, didn't see the VPD card properly.
VPD is always an ugly process, proper codes, etc.

B7006A21
Explanation
PCI-E Switch had a permanent unrecoverable (internal) chip failure. All downstream I/O is failed.
Response
Collect error logs and info logs. Replace the PCI-E Switch FRU, and send the failed FRU with the error log data to IBM for fault analysis.
Failing Item

Paul

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jeff Crosby
Sent: Tuesday, March 04, 2014 10:42 AM
To: Midrange Systems Technical Discussion
Subject: Re: Temporary tape errors

Thanks Scott. I hope other chime in.


On Tue, Mar 4, 2014 at 10:35 AM, Scott Mildenberger < SMildenberger@xxxxxxxxxxxxxxxxxx> wrote:

Jeff,

We have an internal drive and the report shows lots of TTE's, I have
never looked at this before so don't know if it has always been like
this. The report doesn't recommend replacing any media and we have
not had any issues restoring anything off tape.

Scott

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:
midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jeff Crosby
Sent: Tuesday, March 04, 2014 6:51 AM
To: Midrange Systems Technical Discussion
Subject: Re: Temporary tape errors

I heard from my HW service provider this morning. They want to
replace the internal 5755 drive, a 'cage', and wiring harness I think
that's it, but he may have said something else. I asked whether the
replacement drive was tested and would eliminate the Temporary Tape Errors ("TTE" for short).
They said it was tested, but no, the TTEs would not be eliminated.

I asked why should I change drives and still have TTEs? They said
this drive would have fewer errors. They have 15 systems in their
data center and every internal tape drive has TTEs. Customers with
internal tape drives also have TTEs. Systems with external tape
drives (data center and
customers) don't have TTEs. Per them, TTEs on internal tape drives is
the norm.

This *really* bothers me to think that it's acceptable in the midrange
world to have TTEs on internal tape drives. I'm really interested in
whether anyone on this list that is using internal tape drive for
backup would check their *VOLSTATS via the PRTERRLOG command and report.

I have yet to give them the OK to do this. When I do, I may say that
I want to do it Friday at 5pm so if there is a catastrophic issue we
have the weekend to recover. (The last time they replaced the
internal tape drive we lost a hard drive upon restart.) Maybe I'm
overreacting, but I am amazed at how much my confidence in the HW has
been shaken over the past couple of months.
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--
Jeff Crosby
VP Information Systems
UniPro FoodService/Dilgard
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531
www.dilgardfoods.com

The opinions expressed are my own and not necessarily the opinion of my company. Unless I say so.
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