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.
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