Re: Lost VCR

Mr. Vader,

Tivoli has a messages manual out for v3.1. Check out their web page:

http://www.tivoli.com/storage/adsm

Thank You,

Don Caronna
Think Tank Systems, LLC
IBM CATE/ADSM Certified Technician/Solutions Provider
(562) 653-2520
dcaronna AT ttank DOT com
www.ttank.com




Dwight Cook <decook AT AMOCO DOT COM> on 07/21/99 05:05:13 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: Don Caronna/Los Angeles/Ttank)



 Subject: Re: Lost VCR









     Don't worry excessively with this one... just do a "move data" and let
     the tape roll scratch again.

     Now to answer your questions... VCR data is an additional way the data
     is tracked on the tapes.  Remember with old tapes if you had 100 files
     on the tape and you lost file 2, then the only file you had left was
     file 1... 2-100 were gone!  Not anymore.  AND just because the VCR
     data is bad doesn't mean the "data" is bad (but could be).  Every time
     the tape is rewritten new VCR data is laid down, thus do a move data
     and the problem will be self fixing.  Now access will be slower due to
     lost VCR data (cause this is also how it fast forwards to a specific
     file on the tape) but it can/does also sequentially track through the
     files...

     Where exactly in the manual... ?  that was long ago (and as I put
     it... I haven't slept since then)

     later,
           Dwight


______________________________ Reply Separator _________________________________
Subject: Lost VCR
Author:  Louise.Vader at unix,mime/DD.RFC-822=Louise_Vader AT SERCA DOT COM
Date:    7/21/99 6:30 PM


Environment  IBM RISC6000 AIX Version 4.1.5   ADSM version 3.1.0.6
Magstar 3570,  1 drive 20 tape library

What is a VCR and what or where is the Messages Manual, it didn't come with
 the documentation
that came with ADSM.

I am also experiencing excessive requests for tape cleaning. I have turned
it off on the Magstar
and allowing ADSM to perform the cleaning function. Everyday there is a
least one request to clean the tape drive
and I also get write errors on at least two tapes on a daily basis. The
majority of our tapes are only 3 months old.




ANR8820W Repairing VCR data for Volume 1554QK in drive DRIVE1 (/dev/rmt1);
mount may be delayed.
ANR8302E I/O error on drive DRIVE1 (/dev/rmt1) (OP=HANDLELOSTVCR, CC=0,
KEY=03,
ASC=31, ASCQ=00,
SENSE=70.00.03.00.00.00.00.48.00.00.00.00.31.00.FE.0A.36.0C.10.00.00.09.01.
31.-
08.3B.28.60.61.80.11.00.FF.33.23.00.00.33.36.00.06.33.3D.00.06.00.00.00.00.
04.-
00.CF.2C.38.00.00.00.00.00.00.00.00.00.00,
Description=An undetermined error has occurred).  Refer to Appendix B in
the
'Messages' manual for recommended action.
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