Re: Amanda bandwidth usage

[Toomas Aas]

Guy Dallaire wrote:
The default setting for the netusage parameter is 600 kbps.
Correct me if I'm wrong, but a 100 Mbps ethernet interface is 10 000
kbps (roughly)
The 'netusage' parameter is not as important as you may think it is.
This parameter is only used when Amanda decides whether or not to start 
another simultaneous backup from the same client (if you have maxdumps 
set to more than 1). Once the actual dumping starts, Amanda does not 
throttle the network traffic according to this parameter - it uses all 
the bandwidth it can get.

--
Toomas

Amanda bandwidth usage

[Guy Dallaire]

The default setting for the netusage parameter is 600 kbps.

Correct me if I'm wrong, but a 100 Mbps ethernet interface is 10 000
kbps (roughly)

Also, the defaut settings for the 10Mbps ethernet is 400 kbps (Ou of a
possible total of approx 1000 kbps)

Does this mean that with these defaults, amanda can not even in
parallel absorb TWO hosts (2 x 400 kpbs) sending their backups at the
same time ?

I would tend to think that a reasonable setting for doing backups at
night time (very low servers usage) N servers with all servers having
AT LEAST 100 Mbps ethernet interfaces would be:

netusage = 7000 (70% of all bandwidth)

And for each of the interfaces, 7000 / N servers ?

Am I right ?