Hi,

I'm setting up amanda on a Compaq Proliant DL380 with three Compaq
DLT8000 tape drives.

Having run tapetype a few times (using DLT IV tapes), I'm getting the
following:

define tapetype unknown-tapetype {
    comment "just produced by tapetype program"
    length 38301 mbytes
    filemark 23 kbytes
    speed 2088 kps
}

I'm concerned about the 'speed' entry. Whenever I tar a large file
directly to the tape, I get transfer rates of about 4MB/s - but tapetype
seems to think things are going at half this speed.

I looked up the tapetype definition for a Quantum DLT8000 on the
Faq-O-Matic (which I believe to be the same hardware, but with Compaq
firmware?). It gave a speed rating of 5482 kps. This is more what I
would expect, since these drives are supposed to have a transfer rate of
around 6MB/s.

BTW, I'm using the debian package of amanda, version 2.4.2p2-4.

Is it reasonable to change the speed setting to be more in line with
observed transfer rates? Does amanda try to stream data at this rate, or
is it more of a guideline for the planner to base its calculations on?

Any suggestions would be greatly appreciated :-)

Many thanks,

Simon.