Hi Werner,

We run an IBM R40 4CPU AIX Box with a fair amount of disk pool space ..... 
around 300 Gb divided up according to need to the various groups we back up.

From what I understand about ADSM there are many variables to this. For example 
the number of files to be backed up. Many smaller files slow ADSM down. Also 
the backup media type and how many drives. How you have your disk storage pools 
set up etc. Migration levels and all that sort of stuff. And not to forget the 
number of sessions being run at the same time.

Ideally you should aim high. Our server backs one client at more than 10 
MB/sec. There are normally only 2 or 2 files in that 2 Gb Backup so it really 
flies. 

Others run much slower than this, in one case one (Solaris client takes 2 - 3 
hours to backup 2-3 Gb but there are millions of small and large files to look 
at and inspect. It nearly always acheives a network transfer speed of around 
4-8MB/sec over 100BT (depends on traffic) with an aggregate speed of around 
800KB/sec. Even having a huge disk pool for this server hasn't speed it up. 

Clearly then the problem is not at the server end, but the client end.... 

I'm sure the  ADSM guru's here will have much better advice. I am a relative 
newbie. I appreciate thoughts as well.

Regards


Stephen R Pole
Operations Manager
Petroleum Geo-Services Data Management Australia
Level 4, IBM Centre
1060 Hay Street
West Perth WA 6005
Australia
Phone          +61 8 9320 9080
Direct           +61 8 9320 9081
Fax               +61 8 9320 9090
Mobile           +61 41 239 4435  (041 239 4435)
e-mail            stephenp AT prth.geobank.pgs DOT com

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