On Fri, Jan 17, 2003 at 12:27:28PM +0000, Simon Young wrote:
> 
> 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.

Might that speed be when using HW compression.
That is generally about double.

> 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?

>From <amanda-src>/docs/TAPETYPES:

        The speed is currently unused.

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
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