David,
We have three 3575s with a mix of blue, green, and red tapes. We have 360 tapes
online and another 250 near-line.
We have never had one break in four years.
What we have seen with our drives is:
bad microcode;
worn heads;
misalignment of the drive with the picker path;
failure of the laser LED on the picker causing the picker to miss the drive;
failure of the electronics in the drives causing the drives to mis-report tape
status to AIX;
Any of these can cause tape failures.
Tab Trepagnier
ADSM administrator
Laitram Corporation
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: Tab Trepagnier/Corporation/Laitram/US)
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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