ADSM-L

Re: TSM DB Fullbackup 19GB takes 4 hours on OS/390 VTS

2002-04-16 09:38:51
Subject: Re: TSM DB Fullbackup 19GB takes 4 hours on OS/390 VTS
From: Zoltan Forray/AC/VCU <zforray AT VCU DOT EDU>
Date: Tue, 16 Apr 2002 09:44:07 -0400
FYI, I just checked my last full DB backup.

           Available Space (MB): 30,472
         Assigned Capacity (MB): 28,128
         Maximum Extension (MB): 2,344
         Maximum Reduction (MB): 6,240
              Page Size (bytes): 4,096
             Total Usable Pages: 7,200,768
                     Used Pages: 4,846,635
                       Pct Util: 67.3
                  Max. Pct Util: 69.5
               Physical Volumes: 13

If I do the backup to a fast 3590 drive/tape, it takes a little more than 
1-hour and 1-tape.

However, going to a 3490, it takes more that 3-hours and 13+ tapes.

This is to a 3494 ATL. No VTS.

----------------------------------------------------------------------------------------------------
-------------------------
Zoltan Forray
Zoltan Forray
Virginia Commonwealth University - University Computing Center
e-mail: zforray AT vcu DOT edu  -  voice: 804-828-4807




Schaub Joachim Paul ABX-PROD-ZH <joachim.schaub AT ABRAXAS DOT CH>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
04/12/2002 04:48 AM
Please respond to "ADSM: Dist Stor Manager"

 
        To:     ADSM-L AT VM.MARIST DOT EDU
        cc: 
        Subject:        TSM DB Fullbackup 19GB takes 4 hours on OS/390 VTS


Dear *SM Gurus

The TSM DB Fullbackup (19GB)  takes about 4 hours on OS/390 with VTS. I
haven't found any descriptions for parallelisation, eg. maxpr or mountp.
Is it in the tec. nature, the DB will be backed up in sequenz?

tia
Joachim 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Joachim Paul Schaub
Abraxas Informatik AG
Beckenhofstrasse 23
CH-8090 Zürich
Schweiz / Switzerland

Telefon: +41 (01) 259 34 41
Telefax: +41 (01) 259 42 82
E-Mail: mailto:joachim.schaub AT abraxas DOT ch
Internet: http://www.abraxas.ch
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~