Re: Temporary tape errors

Jeff,

On two different aged 520's, both with 6384 QIC internal drives, lifetime
reports:

V5R4
Volume ---Temporary Errors--- --------M Bytes--------
ID Read Write Read Written
******** 1 0 1 1
15 0 1 1
SAVSYS 113 159244 1 41028
IBMIRD 358 2221075 222 718707


V7R1
Volume ---Temporary Errors--- --------M Bytes--------
ID Read Write Read Written
0 100 1 1
BACKUP 34 265772 1 62356
SAVSYS 238 434215 1 348448
CUWCD1 0 2550 1 27035
FIN 0 108 1 1714
#SAVE 9 50972 1386 866727
BDATA2 0 0 1 9580
FDATA 0 0 1 9515
FULSAV 0 0 1 23446




On Tue, Mar 4, 2014 at 8:42 AM, Jeff Crosby <jlcrosby@xxxxxxxxxxxxxxxx>wrote:

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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