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Home > Archive > Backup Software > December 2004 > ntbackup compression
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| Author |
ntbackup compression
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| Neil Jarman 2004-12-16, 7:29 pm |
| Hi,
Does NTBackUp support hardware compression on an HP DAT 20/40 (DDS4)?
I have the compression switch on, but I don't seem to get much over 20Gb
before the tape is full.
Many thanks,
NEIL
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| Jerold Schulman 2004-12-16, 7:29 pm |
| On Wed, 15 Dec 2004 10:03:04 -0000, "Neil Jarman" <neil@tNOiSPAMvPLEASEy.co.uk> wrote:
>Hi,
>
>Does NTBackUp support hardware compression on an HP DAT 20/40 (DDS4)?
>
>I have the compression switch on, but I don't seem to get much over 20Gb
>before the tape is full.
>
>Many thanks,
>
>NEIL
>
Yes.
Jerold Schulman
Windows Server MVP
JSI, Inc.
http://www.jsiinc.com
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| Neil Jarman 2004-12-16, 7:29 pm |
|
[vbcol=seagreen]
> Yes.
Hi Jerold,
In which case, what am I doing wrong?
I sat and watched yesterday as a tape got to 23Gb and then asked for a new
tape.
NEIL
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| Jerold Schulman 2004-12-17, 8:45 pm |
| On Thu, 16 Dec 2004 16:30:34 -0000, "Neil Jarman" <neil@tNOiSPAMvPLEASEy.co.uk> wrote:
>
>
>
>Hi Jerold,
>
>In which case, what am I doing wrong?
>
>I sat and watched yesterday as a tape got to 23Gb and then asked for a new
>tape.
>
>NEIL
>
The heads could be dirty. When was the last time you inserted a cleaning tape.
Are you backing up files that don't compress well.
Since you are getting more than 20GB, I think it is compressing.
Jerold Schulman
Windows Server MVP
JSI, Inc.
http://www.jsiinc.com
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| Neil Jarman 2004-12-20, 5:45 pm |
| Hi Jerold,
Well, the drive is about 18 months old and is used 5 nights a week.
I ran HP's diagnostic software and it made me run the cleaning tape
repeatedly.
After that little episode, the girl in charge of swapping tapes is supposed
to run the cleaner every Monday morning, although I'm not there to check!
Of the data, 16Gb is general office data (I don't know where they get it
from) and then I would like to back up exchange, which is 10Gb, but
obviously I'm not doing that at the moment.
Is it possible to get some stats (such as compression ratios) back from
NTbackup?
best wishes,
NEIL
"Jerold Schulman" <Jerry@jsiinc.com> wrote in message
news:ktm5s0lbcvqrit9ma63ld5mbqb7s22im3b@
4ax.com...
> On Thu, 16 Dec 2004 16:30:34 -0000, "Neil Jarman"
<neil@tNOiSPAMvPLEASEy.co.uk> wrote:
>
new[vbcol=seagreen]
> The heads could be dirty. When was the last time you inserted a cleaning
tape.
> Are you backing up files that don't compress well.
> Since you are getting more than 20GB, I think it is compressing.
>
>
> Jerold Schulman
> Windows Server MVP
> JSI, Inc.
> http://www.jsiinc.com
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