Sen

You cannot set the ratio (wish that you could though!)  You can control
compression on a yes/no basis by configuring your OS appropriately but after
that compression is as good as the source data will let it be.

Why would you not compress?

 PaulW

www.pbnj-solutions.com IT Solutions That Stick
(216) 533-5708


> -----Original Message-----
> From: veritas-bu-admin AT mailman.eng.auburn DOT edu 
> [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Sen
> Sent: Monday, May 05, 2003 6:50 AM
> To: Matt Moody
> Cc: netbackup-l; nbu-lserv; veritas-bu AT mailman.eng.auburn DOT edu
> Subject: Re: [Veritas-bu] number of tapes
> 
> 
> how do i set the Compression ratio ??
> 
> ----- Original Message ----- 
> From: "Matt Moody" <mattm AT m-c-s DOT com>
> To: "Sen" <discussion.groups AT gmx DOT net>
> Sent: Sunday, May 04, 2003 3:35 PM
> Subject: RE: [Veritas-bu] number of tapes
> 
> 
> > DLT8k drive assuming non-compressed will require 4 tapes for the 
> > backup. Compressed 2:1 will require 2 tapes.
> >
> > ASCII data (text) is highly compressable whereas .pdf's and 
> some image
> types
> > are not very compressable.  Assume 3 tapes, expect less required.
> >
> > Matthew Moody
> > MCSI
> >
> > -----Original Message-----
> > From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> > [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Sen
> > Sent: Sunday, May 04, 2003 1:07 AM
> > To: Matt Moody; netbackup-l; nbu-lserv; 
> > veritas-bu AT mailman.eng.auburn DOT edu
> > Subject: Re: [Veritas-bu] number of tapes
> >
> >
> > i am using DLT 40/80
> > how do i know the estimated data compression?
> > its a 1 time backup, keep for 1 month
> >
> > ----- Original Message -----
> > From: "Matt Moody" <mattm AT m-c-s DOT com>
> > To: "Sen" <discussion.groups AT gmx DOT net>; "netbackup-l" 
> > <netbackup-l AT yahoogroups DOT com>; "nbu-lserv" 
> > <nbu-lserv AT dsihost-srv01 DOT com>; <veritas-bu AT mailman.eng.auburn DOT 
> > edu>
> > Sent: Sunday, May 04, 2003 2:00 PM
> > Subject: RE: [Veritas-bu] number of tapes
> >
> >
> > > What tape drives will you be using?  How much estimated data
> compression?
> > > Are you talking a one-time backup or a backup rotation.  If 
> > > rotation,
> how
> > > long will you be keeping the data?
> > >
> > > Matthew Moody
> > > MCSI
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> > > [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Sen
> > > Sent: Saturday, May 03, 2003 11:34 PM
> > > To: netbackup-l; nbu-lserv; veritas-bu AT mailman.eng.auburn DOT edu
> > > Subject: [Veritas-bu] number of tapes
> > >
> > >
> > > Hi,
> > > how many backup tapes do you think is required for 150GB of data?
> > >
> > > Thanks
> > >
> > > _______________________________________________
> > > Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu 
> > > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> > >
> > >
> > >
> >
> >
> > _______________________________________________
> > Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu 
> > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> >
> >
> >
> 
> 
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu 
> http://mailman.eng.auburn.edu/mailman/listinfo> /veritas-bu
>