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> Date: Mon, 24 Jan 2000 10:07:10 +0100
> From: "Mauro M. TINELLI" <Mauro.TINELLI AT ST DOT COM>
> Subject: Re: 3590E1A Problem
> Comments: To: trinkaus AT HRZ.UNI-MARBURG DOT DE
> To: ADSM-L AT VM.MARIST DOT EDU
>
> Eckhard,
>
> how many files/objects did it move from that tape? Every move implies a
> database update, so lots of objs or a busy Db can slow down the process.
> Perhaps ...
>
> Mauro, STM
>
> > Hello,
> >
> > our 3590 tape units were upgraded from 3590B1A to 3590E1A.
> > Before using the 3590E Units, all tapes written by 3590Bs
> > got access mode readonly.
> > Now we try to get rid of our "old" taoes by move data
> > from storage pool on tape to storage pool on disk.
> > Normally, a move date (for a tape in an archive storage pool,
> > est. capacity = 14000MByte, pct. util = 100.0%) takes about 20 minutes.
> > Now we have one tape (same storage pool,
> > est. capacity = 13500 MByte, pct. util = 67.9%) that took more then 11
> hours
> > for move data.
> > I cannot see any reason for this strange behaviour;
> > other move datas from the same 3590 Unit take "normal" times.
> >
> > Any ideas?
> >
> > With kind regards / Mit freundlichen Gruessen
> > Eckhard Trinkaus
> >
> > ************************************************
> > Eckhard Trinkaus
> > Hochschulrechenzentrum der Philipps-Universitaet
> > Hans-Meerwein-Strasse D35032 Marburg/Lahn
> > Bundesrepublik Deutschland
> > Tel.:  +49 6421 2821554 / Fax: +49 6421 2826994
> > Email: trinkaus AT hrz.uni-marburg DOT de
> > ************************************************

Watching the move data process (query process) shows: the tape contains big
files (average size 6 MByte), and it takes very long time
to read one such file!

With kind regards / Mit freundlichen Gruessen
Eckhard Trinkaus

************************************************
Eckhard Trinkaus
Hochschulrechenzentrum der Philipps-Universitaet
Hans-Meerwein-Strasse D35032 Marburg/Lahn
Bundesrepublik Deutschland
Tel.:  +49 6421 2821554 / Fax: +49 6421 2826994
Email: trinkaus AT hrz.uni-marburg DOT de
************************************************