Re: How to activate the datacompression at SCSI-DAT-Streamer HP C1533A ??
On Mon, Mar 26, 2001 at 12:55:34PM +0200, Walther, Christoph wrote:
> Dear Debian-Community,
>
> meanwhile I found out, that the datacompression at
> HP C1533A-DAT-Streamer obviously isn't to activate.
>
> That means, the tar-saving at DDS2-120m-DAT-tape stops
> after ca. 3,5 GByte.
>
> It makes no sense, if the datacompression is activated by the
> DIL-switches 1 and 2 at the streamer or to do that by
> mt -f /dev/st0 datcompression 1.
> There is no difference too, if the Media Recognition System is active
> or not (DIL-switch 3).
>
> tar -R counts the written blocks a 512 Byte.
> After end of medium are
> 7167695 blocks a 512 Bytes written.
> These are ca. 3,66 GByte.
>
> Furthermore, is there given no documentation about
> the DIL-switches 4 to 8 of this streamer,
> I couldn't find for that anything,
> according to LINUX ?
> In devices.txt in /usr/src/linux/Documentation are no
> declarations about "modes",
>
> st0 mode0
> st0l mode1
> st0m mode2
> st0a mode3
>
> Do you know, what they mean?
>
> If I do according to
>
> /dev/st0l or
> /dev/st0m or
> /dev/st0a
>
> mt -f <Device> status
>
> the the system answers: "Device not configured!"
>
> Is there generally no datacompression-support given
> for /dev/st0-drivers according to DDS2-SCSI-streamers?
> And what is to configure for st0a, l oder m switching on
> effectively the datacompression at DAT-streamers?
>
> Anyone experienced how to switch on the
> datecompression at HP C1533A-Streamer with Linux ?
mt datcompression should turn it on, man mt for more info
--
,-------------------------------------------.
> Name: Alson van der Meulen <
> Personal: alson@linuxfreak.nl <
> School: alson@gymnasiumleiden.nl <
`-------------------------------------------'
What did you say your (l)user name was...? ;-)
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