I have a HP SureStore external 24x6 DDS3 Dat drive

I use MT and MTX commands to backup info to it ... if you have a look at the
man page for mt you will see

compression
(SCSI tapes) The compression within the drive can be switched on or off
using the MTCOMPRESSION ioctl. Note that this method is not supported by all
drives implementing compression. For instance, the Exabyte 8 mm drives use
density codes to select compression.

on my device it uses the hardware compression as default so i use mt -f
/dev/st0 for the tape device ...

I found the same for the DLT40 again a HP device ,,

HTH

Nige
----- Original Message -----
From: "Mark Thomas" <thomasm@uniteddrugs.com>
To: <plug-discuss@lists.plug.mybutt.net>
Sent: Thursday, January 17, 2002 10:27 AM
Subject: HP DAT/DLT drives


> Hello, everyone.
>
> I am wondering whether anyone has experience using HP DAT or (preferably)
DLT
> drives on a Linux system.  Specifically, I am wondering how the hardware
> compression is enabled, and whether it can be enabled using Linux, or
whether
> some Windows utility/driver is required.
>
> Thanks.
> --
> Mark "T.C." Thomas
> Database Administrator
> United Drugs
> <thomasm@uniteddrugs.com>
>
>
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