> -----Original Message-----
> From: bacula-users-bounces AT lists.sourceforge DOT net
> [mailto:bacula-users-bounces AT lists.sourceforge DOT net] On Behalf
> Of Hemant Shah
> Sent: Friday, 5 September 2008 5:05 AM
> To: John Drescher; Alan Brown
> Cc: bacula-users AT lists.sourceforge DOT net
> Subject: Re: [Bacula-users] How much space does Bacula need?
>
> --- On Thu, 9/4/08, Alan Brown <ajb2 AT mssl.ucl.ac DOT uk> wrote:
>
> > From: Alan Brown <ajb2 AT mssl.ucl.ac DOT uk>
> > Subject: Re: [Bacula-users] How much space does Bacula need?
> > To: "John Drescher" <drescherjm AT gmail DOT com>
> > Cc: bacula-users AT lists.sourceforge DOT net
> > Date: Thursday, September 4, 2008, 6:00 AM
> > On Wed, 3 Sep 2008, John Drescher wrote:
> >
> > Do you compress before writing to tape or do you let the
> > tape drive do
> > that?
> >
> > AB
> >
> >
> >
>
> You should always let the tape drive do the compression, the
> hardware compression on tape will be faster then software
> compression done by the client. Your backups will be faster too.
>
>
> Hemant Shah
> E-mail: hjrrs AT yahoo DOT com
>

 Just out of interest, are there recommended hardware compression settings to 
use for LTO-3? I want my LTO-3 tapes using 2:1 compression (~800GB).

 Please advise if I need to change something below?

# mt -f /dev/nst0 status
SCSI 2 tape drive:
File number=-1, block number=-1, partition=0.
Tape block size 0 bytes. Density code 0x44 (no translation).
Soft error count since last status=0
General status bits on (1010000):
 ONLINE IM_REP_EN

# tapeinfo -f /dev/sg1
Product Type: Tape Drive
Vendor ID: 'IBM     '
Product ID: 'HH LTO Gen 3    '
Revision: '73P8'
Attached Changer: No
SerialNumber: '1020008840'
MinBlock:1
MaxBlock:16777215
SCSI ID: 1
SCSI LUN: 0
Ready: yes
BufferedMode: yes
Medium Type: 0x38
Density Code: 0x44
BlockSize: 0
DataCompEnabled: yes
DataCompCapable: yes
DataDeCompEnabled: yes
CompType: 0x1
DeCompType: 0x1
BOP: yes
Block Position: 0

 Cheers,
 Dagan McGregor


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