Tape operation

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Hi all,
My only encounter with tape-backup was with Windows 2000. With it, when we 
backup things using windows' backup tool, it will create a 'catalog', then 
the catalog contains all the backup operations we do based on date. So, with 
this we can "append" many backups into one tape. Next time we want to restore 
a backup, we can choose what date available in that particular tape.

I have zero experience with tape on Linux. I've been googling around and it 
seems that the backup operation is very different.

For example:
- The tape is 400GB (LTO-3)
- The data is only 10GB

Some of the articles I read imply that 1 tape contains 1 backup-file only. 
CMIIW. This is certainly not very efficient. The commands used are: mt, 
either tar, cpio.

My question is:
1. How do I use that one tape of 400GB to store 39 archives of backup into it 
in Linux?
2. Is tape backup seen by Linux just like any other filesystem? Can we mount 
it and 'ls -l' it?
3. When to rewind, forward, why?
4. Wel will only backup data/files (not the entire filesystem), is it enough 
to use the software provided by the tape vendor, or do I need another 
software? Or just the mt command will do it?

Any URL, scripts, insight are very welcome. 
Thank you very much.
-- 
Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial 
http://linux2.arinet.org
11:35:28 up 4:39, 2.6.22-14-generic GNU/Linux 
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The real challenge of teaching is getting your students motivated to learn.

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