New tape each time... (especially if you specify scratch=yes in your command
;-) )
if you were to specify a specific volser it would write file #1... so you
had better not reuse your previous incremental tape
actually shouldn't let you until you have cleared it with a "del volhist
t=dbb tod=-#"   where # is the number of days past which you wish to delete

as with all backups, incrementals are only to save you time...

I always do full backups every day... the only time I do an incremental is
to save time and catch up to current prior to a change

example, when I upgraded to TSM from ADSM I ran my DB backup while clients
were still accessing the server, then I locked out the clients and ran an
incremental DB backup, then upgraded to TSM... this saved me about 1-2 hours
on upgrades depending on the server I was working on... (have 12)

later,
       Dwight


> ----------
> From:         Gerald Wichmann[SMTP:gwichmann AT SANSIA DOT COM]
> Reply To:     ADSM: Dist Stor Manager
> Sent:         Monday, April 24, 2000 6:05 PM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      TSM incremental DB backup?
>
> The book recommends doing a full DB backup (up to 32) and then
> incrementals
> of your TSM DB.. Im looking at the library I use for the DB backups and it
> basically has 6 DLT tapes available. Currently weve just been doing a full
> each morning to one of the carts and rotating through the 6 carts..
>
> A full basically uses a full DLT tape each time even though Im sure it is
> not filling the tapes up. Do incrementals also use a tape each time or
> would
> I basically be doing a full on tape 1, and an incremental on tape 2 for a
> number of days until my next full, which I could do on tape 1 again?
>
> Thanks!
>
>
> Gerald Wichmann
> RS Engineer
> Sansia System Solutions
> 408-844-8893 work
> 408-844-9801 fax
>