On 2002-05-20 18:53:27-0400, Greg Freemyer wrote:
>
> >> > If your data is 2:1 compressible, that is 7.2 GB/hr uncompressed.
> >> > That sounds like what you are getting on the windows box.
> >> >
> >> The issue here is that both jobs are using compression, but Arcserve
> >> 2000 on NT is performing faster than say, tar or xfsdump. The problem
> >> I've got with this though, is that it's so much longer there's got to be
> >> something I could tweak, either with xfsdump or the drive, so that's
> >> what prompted my query.
>
> Tape drives slow down excessively when they go from a streaming to a
> non-streaming situation.
>
> If your feedrate is borderline, then a small speed reduction in data
> throughput caused by the software, could have a huge impact on backup times.
Perhaps you should insert a small buffer between xfsdump, for example with
bfr: http://www.glines.org:8000/software/buffer.html
This will be most useful when dealing with a large number of small files.
Regards,
--
Wessel Dankers <wsl@xxxxxxxxxxxx>
your process is not ISO 9000 compliant
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