David... TSM 3.7.3.6 AIX 4.3.2 with a 3575 L32... I have about .015 of my
700-800 total volumes with excessive media errors. Out of the same total, I have
about a dozen that have had to been marked destroyed because they couldn't be
mounted and I have had one break. I am using a variety of Magstar tapes and the
one that broke was a Magstar MP C-Format XL 7GB. I have been at this job since
last July (my first exposure to TSM) but we have been plauged with drive errors
due to the poor quality of this media since I got here. The number of broken
tapes you are getting relative to the single broken tape I have had indicates
you have a problem that should be looked at by a CE. It may be an alignment
thing that is very subtle. My experience with the CEs is that they don't have a
lot of these tape libraries to gain experience with and subtle problems are
difficult for them to track down. Not sure this info helped but might give some
perspective on the frequency of your broken tapes.... BTW: The tape that broke
was requested from offsite to restore a primary pool volume which couldn't be
mounted... If this happens, you are out of luck....
George Lesho
Storage/System Admin
AFC Enterprises
David Longo <David.Longo AT HEALTH-FIRST DOT ORG> on 02/14/2001 02:06:19 PM
Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
cc: (bcc: George Lesho/Partners/AFC)
Fax to:
Subject: IBM 3575-L32 tapes broke
Anybody have any bad experience with tapes breaking in 3575 libraries? We have
6 C-XL drives with both blue and red tapes and both break.
When I started here over 4 months ago I found that we were loosing maybe 2 tapes
a week. I opened cases and all were being broken cleanly at the midpoint. I
tracked it down via *SM actlog to apparently one of the 6 drives. IBM replaced
drive and the problem went away.
Now we have lost one tape about every 2 weeks in last 6 weeks, apparently from
different drives. (After first incident I personally examined every tape in and
out of library to eliminate any broken tapes in system.)
I have gotten tapes replaced from IBM, but want to know if this is peculiar to
us or if anyone else has seen this problem.
Thanks,
David B. Longo
System Administrator
Health First, Inc. I/T
3300 Fiske Blvd.
Rockledge, FL 32955-4305
PH 321.434.5536
Pager 321.634.8230
Fax: 321.434.5525
david.longo AT health-first DOT org
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