Hi Susie,

     Our ADSM Servers is V2R1M3 on MVS. Our DB is 3 GB, about 75%
     filled. With ADSM we do daily incremental backups which takes
     normally less than 8 Minutes. On Sunday we do ADSM full backup
     which takes less than 45 Minutes.

     Once I have done a full restore of a full backup, which has been
     taken just before the restore was done (i.e. no additional incr.
     and only very little roll forward recovery). That took 1 hour and
     6 minutes.

     On ADSM V1 we have made a consistent DUMPDB every day and that
     took about 90 Minutes. We have never done LOADDB with Version 1.

     Christian Moser,           Internet: christian.moser AT schering DOT de
     SCHERING AG, 13342 Berlin, Tel.: (030)4681356 Fax: (030)46916719


     _______________________ Antwort-Abtrennung ___________________________
     Betreff: ADSM db backup before service
     Autor:  ADSML (INTERNET.ADSML1) bei SNAPI
Datum:    04.01.1996 21:28


     FROM   :
                INTERNET.ADSML1
                ADSM-L AT VM.MARIST DOT EDU

     DATE   :   01/04/96
     SUBJECT:   ADSM db backup before service

I have been reading all the horror stories on how long it takes to back up
and restore ADSM DB's.

I am going to upgrade my VM server from level 1.10 to 1.15.
It seems we have never done "ADSM" db backups.. we just use a backup product
to backup the minidisks allocated to the database.

Do I need to do an ADSM backup before I upgrade the server code ??  If I do,
will this take forever and a day?-- My ADSM db is currently 1800 MB. (PART OF
the reason we are upgrading is so we can pick up the enhanced backed/recovery
capabilities for the database itself).

What are the ramifications if we just rely on backup copies of the ADSM
DB minidisks themselves, rather that an ADSM invoked DB backup ???

Thanks.
Susie McClure
Rice University