alter to go to diskpool first
use tsm client compression
don't multiplex with tdp
run about 10-20 concurrent client sessions (based on processor ability)
you should see about 4/1 compression
you should see about 11.6 MB/sec data transfer (if things are really OK &
processor can keep up)
you should see your db backup in just over 2 hours...
we have a 2.4 TB data base, use the above methods and push 600 GB (the
compressed size) in 16 hours...
we also have smaller ones we see the same rates with... such as a 200 GB
that compresses down to about 60 GB and runs in under 2 hours
hope this helps...
Dwight
-----Original Message-----
From: Francisco Molero [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 20, 2001 9:35 AM
To: [EMAIL PROTECTED]
Subject: SAP and 3494 performance.
Hello,
I have a query about performance between a TDP for SAP
R/3 under HP-UX and TSM Server with a 3494 library.
The size of database is 350 GB and the connection is
via tcpip (ethernet 100). I used the brbackup -c -t
offline command and the bacukp is sent to tape pool in
the library 3494. I have a private network and also I
am using the compression parameter to yes in the
client in order to improve the performance in the
network. The backup takes 6 hours in backing up the db
and this time is very high. I need to reduce it. the
drives are 3590, and the format device class is DRIVE.
Can someone help me about the parameters which can
improve this performance ???
Regards,
Fran
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