compressed mode for tape drive

From: Administrateur de systemes (sysadmin_at_DMS.UMontreal.CA)
Date: 10/22/04 

Date: Fri, 22 Oct 2004 14:49:24 GMT

Hi all linux gurus

I can backup my data with a tar on the /dev/nst0 ( dds4 tape drive ).
But would like to know if there's a compressed mode

[root@fraser dev]# ls -lrt | grep nst0

crw-rw---- 1 root disk 9, 192 Jan 30 2003 nst0m
crw-rw---- 1 root disk 9, 160 Jan 30 2003 nst0l
crw-rw---- 1 root disk 9, 224 Jan 30 2003 nst0a
crw-rw---- 1 root disk 9, 128 Jan 30 2003 nst0

I don't see a /dev/nst0c :-(

looking for kinda /dev/rmt/0cbn ( like Solaris )

Thanks in advance
Franck