Re: dump config for 4mm DAT SCSI

[Alex Vorobiev <sasha forum swarthmore edu>]

Ray, 

thanks for your response.  i will pursue hardware compression.
also, when i was talking about mt not returning any info 
relevant to compression, i unfortunately omitted the word compression
in the command:

mt -f /dev/nst0 compression

as per the mt man page, this may toggle(?) compression.

- sasha / sasha forum swarthmore edu
 
> av> RH 5.1 
> av> NetServer LH Pro w/SureStore DAT24
> 
> av> My approximate configuration based on the tape capacity 
> av> (in this case, using a DD2 120m tape):
> 
> av> /sbin/dump 0nuBf 4000000 /dev/nst0 FILESYSTEM
> 
> av> works well.  I was wondering, however, if anybody had more 
> av> precise tips/best practices.  Also, how does one control 
> av> compression?  mt -f /dev/nst0 returns nothing (is it supposed to,
> av> or does this set compression to ON?).
> 
> I don't have any tips to offer on this particular setup, however as
> far as compression goes, let the drive do the compression, by setting
> the hardware switches not use compression with dump. The hardware will
> usually do a much better job of compression.
> 
> mt -f /dev/nst0 is supposed to return nothing since you haven't given
> it a command such as rewind, retentsion, eject etc, etc,
> 
> Try mt -f /dev/nst0 status this should print some info on your drive
> or mt -f /dev/nst0 rewind.
> 
> 

> 
> 
> 
> --
> Ray Curtis         Unix Programmer/Consultant   Curtis Consulting
> mailto:ray ray clark net                        http://www.clark.net/pub/ray
> ============================================================================
> 
> 
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