Amanda-Users

Re: tapetype definitions

2006-06-03 04:16:06
Subject: Re: tapetype definitions
From: Chris Lee <cslee-list AT cybericom.co DOT uk>
To: amanda-users AT amanda DOT org
Date: Sat, 03 Jun 2006 09:01:08 +0100
Thanks all for the input.
I think I am happy with the value I get ;)

Regards,
Chris.


Jon LaBadie wrote:
On Fri, Jun 02, 2006 at 11:23:11PM +0200, Paul Bijnens wrote:
Chris Lee schreef:
Just to add to the whole tape type thing :)
I ran amtapetype on my DLT8000 (40/80GB) using a DLTIV tape.
Now I assumed that it should give me a 40GB capacity as I have hardware compression off.
But I get the following:
define tapetype DLT8000 {
   comment "just produced by tapetype prog (hardware compression off)"
   length 36650 mbytes
   filemark 0 kbytes
   speed 3944 kps
}

Now it is not far off but should it not be closer?
Also I get a lot of shoe shining during amtapetype run

Two remarks:
40 GB on the tape is means about 40 * 1000 * 1000 * 1000 bytes.
Amanda counts in powers of 2:  40000000000/(1024*1024*1024) = 37.25 GiB


I would always claim that when I saw low numbers.
But my recently aquired LTO-1, nominally 100GB and thus should measure 94GB,
actually measured 101+ amanda GB :)


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