amtapetype gave me :
   length 386048 mbytes
   filemark 0 kbytes
   speed 67753 kps



Joshua Baker-LePain wrote:

On Mon, 31 Oct 2005 at 8:20pm, Jason Castonguay wrote

Joshua Baker-LePain wrote:

On Wed, 26 Oct 2005 at 4:06pm, Jason Castonguay wrote

define tapetype Ultrium3 {
    length    414386 mbytes
    filemark    1889 kbytes
    speed    10881 kps
}

Not that it's used by amanda for anything, but your speed seems awfully slow. I don't know if that's a symptom of amtapetype or not (LTO3 drives are fast compared to *hard drives*, never mind your standard tape drive), but to get my LTO3 drives to run anywhere near their rated speeds I had to use a blocksize > than amanda's default 32K. To do *that*, you'll need to use the --with-maxtapeblocksize flag at configure time. I'm using 2M blocks.

hmm... well, using the -b 2M flags.

length: 404488 mbytes
filemark 266 kbytes
speed 10793 kps

Should I play with this more? I'm not sure what else to do to get more speed out of it.

It may be a symptom of amtapetype then. Try testing with tar and varying the block size.