AHHHHHHH BUT !

     (I'm planning but have not looked deeply into it yet)

     What if you have a device class with a device type of "FILE"... then
     you backup your DB to a local file, then if you have multiple adsm
     servers... back that file up to another adsm server into a management
     class that has a backup storage pool... then you would have 3 copies
     of the thing (one on local disk, two on another adsm server that could
     be restored to a server of your choice, within the standard limits)

     OOOPssss not to dual servers yet I see... and it wouldn't work to make
     a backup of the adsm db backup on that adsm server 'cause you would
     need it up and running to get it back (whew, that's a mouthfull)

     BUT you could "ftp" that file to another server somewhere else (say
     the server you would rebuild adsm on in the event of a disaster...

     ALSO you could perform  back to back full DB backups and you would
     have "good enough to recover from" dual copies of the data base
     backup.

     Personally I've just been caching in all my chips with GOD so none of
     our adsm servers goes down hard ;-)

     3+ years, 15 ADSM servers, inbound traffic 1+ TB nightly, server crash
     that has lost the ADSM data base NONE!

     Now that I've said that probably half of them will belly up tonight,
     Thanks a bunch !

     later,
           Dwight
                  ;-)

     don't worry... da da... da da  be happy !
     (ie I don't think it is worth the worry you are putting into it...
     just MHO)


______________________________ Reply Separator _________________________________
Subject: DB backup -- a single point of failure??
Author:  dagnew (dagnew AT CHARLOTTEPIPE DOT COM) at unix,mime
Date:    2/12/99 2:00 PM


As I have been building a disaster recovery plan with ADSM, I have been
trying to identify and eliminate all single points of failure.  Now I've run
up against one that won't go away, the database backup.

As I read the manuals, I note that there is no way to create a duplicate
copy of the database backup tape.  So, if I lose (through media failure or
whatever) the latest database backup or ANY in the series of the latest full
and subsequent incremental backups, I cannot restore my database to 'last
backup'.

Granted, if I have two servers and do a server-to-server backup of the
database and then copy that archive file, I do get a copy of the database
backup.  But dual servers is not in the current configuration YET and I
can't find any other way to avoid this single point of failure situation.

Am I just not thinking clearly or is this a legitimate problem??

TIA

Doug Agnew
DBA
Charlotte Pipe & Foundry
dagnew AT charlottepipe DOT com


{As always, opinions stated herein are mine alone ......}