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RE: Temporary tape errors



fixed

Jeff,

I checked both LPARs, 3 temporary write errors total, lifetime stats, (2 years).
Power7 8205-E6C with TS3200 LTO5 4 HH Fiber attached drives.

Years back I remember more temp errors, I can't remember if it was 3590, 8MM, or LTO3.
I also remember media errors, haven't seen one of those since on LTO5, LT 5 back on LTO3, many more on 3590 and 8mm.
I remember many saves erroring or hanging because of tape errors, 3590 and 8mm days.

Paul

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Roberto José Etcheverry Romero
Sent: Friday, February 28, 2014 6:08 PM
To: Midrange Systems Technical Discussion
Subject: Re: Temporary tape errors

may it have anything to do with sharing the scsi controller between the disks and the tape? i know FC has problems with that (and in fact i'm almost sure that the ts3200 that keeps going offline in my bkp server is due to that)...


On Fri, Feb 28, 2014 at 4:51 PM, Buck Calabro <kc2hiz@xxxxxxxxx> wrote:

On 2/28/2014 2:14 PM, Jeff Crosby wrote:
A Save21 for them generated over 9,000 temporary tape write errors.
This compares to 6,160 temporary write errors we got Wednesday
morning and
42,051 temporary write errors we got yesterday (Thursday) morning.

-snip-

What's everybody else's experience before/after a large save?

If I had as few as dozens of errors on a new tape I'd have a CE
looking at the drive.

On the 52 tapes that I have in regular rotation, I have zero temporary
read errors and zero temporary write errors. The TS2900 drive is
about
18 months old; the LTO3 tapes are about 6 years old. We save
600-700GB each night on these tapes.

There are another 20 or so tapes which get rotated in on a less
regular basis. They too are free of temporary read and write errors.
These tapes are even older than the regulars.

Power 720, IBM i 7.1 TL13298.
TS-2900 3572-S4H auto-configured as 3580-004.
--buck

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