Hello all!
I am having some troubles with my AMANDA backups running too long. They
often take 20+ hours,
sometimes even breaking the 24-hour mark. The average amount of data I get
is only about 35GB.
I am running my amanda-server on Solaris8, on a Sun Ultra5 400MHz with 256MB
RAM, on a 100mbps
connection. I have 2 DLT 7000 tape drives set up (though it very rarely
roles over).
Recently, I put a larger holding disk on the server and found that my run
time was cut more than in half!
However, I notice that I am still only getting a total of about 3GB an hour.
The data runs from the holding
disk to tape at more like 6MB/s.
We have a couple of other backup systems running on almost identical
hardware that puts more than
twice as much data to tape in slightly less time. So I guess what I am
really asking is, am I missing
something in the configuration of AMANDA sthat will allow better usage of
the network connection?
I found this in the amanda.conf file:
netusage 4000 Kbps # maximum net bandwidth for Amanda, in KB per sec
(blah blah)
network interfaces
..... Attributes are:
use - bandwidth above which amanda won't
start
backups using this interface.
Note that if
a single backup will take more
than that,
amanda won't try to make it run
slower!
define interface local {
comment "a local disk"
use 1000 kbps
}
define interface le0 {
comment "100 Mbps ethernet"
use 4000 kbps
So, does this mean that if my dumpers are using 4000kbps, amanda won't allow
any more
dumpers to start (even if the maximum number of allowed dumpers has not been
reached)?
Can I improve performance by raising the netusage variable and "use"
attribute to something
more in line with the actual capacity of the amanda-server's network
connection?
Also, the network interface on the amanda-server is actually "hme0". Are
the above simply
examples? Should I create a new interface definition?
Thanks for your help!
Brandon Moro
Systems Administration, Unify Corporation
[EMAIL PROTECTED]
---------------------
>From meanness first this Portsmouth Yankey rose, And still to meanness all
his conduct flows. --Oppression, A poem by an American (Boston, 1765).
