On Wednesday 11 September 2002 06:28, Mozzi wrote:
>Hi again all
>
>When running typetype what do I spesify as my type size ?
>I have a 40/80 Gig dlt tape drive
>so will my command be
>typetype -e 40 -f /dev/nst0 -t Tandberg VS80 DLT
>or
>typetype -e 80 -f /dev/nst0 -t Tandberg VS80 DLT
>?

Turn off any hardware compression first, and *leave it off*, then 
try the first version.  With hardware compression on, the data from 
/dev/urandom will expand somewhat and tapetype will return an 
amount thats conservative, probably by double digit percentages.

Amanda needs to know how much the tape can hold because she counts 
bytes being sent to the medium AFTER any compression she might have 
been told to do via your chosen dumptype in the disklist.  Since 
software compression can, except for already compressed archive 
files, very handily beat the socks off the hardware rll, you'll get 
quite a bit more real capacity out of a tape with software.  One 
session last week had nearly 7 gigs of src, on tape it was well 
under 2gigs, using less than half a DDS2 tape.

In your disklist, don't compress directories full of archives, and 
do compress the other stuff unless the email from amanda says the 
compression was over 100% for that entry, which tells you the data 
grew.

-- 
Cheers, Gene
AMD K6-III@500mhz 320M
Athlon1600XP@1400mhz  512M
99.14% setiathome rank, not too shabby for a WV hillbilly