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List:       adsm-l
Subject:    Re: Storage Agent Upgrade on AIX caused LANFree to slow way down
From:       TSM_User <tsm_user () YAHOO ! COM>
Date:       2006-08-25 22:46:10
Message-ID: 20060825224610.22060.qmail () web53603 ! mail ! yahoo ! com
[Download RAW message or body]

We did the same thing with both backups.  Both of them went faster but the OS backup \
went from 30 GB/hr to over 130 GB/hr.  The DB backup went from about 45 GB/hr to \
around 65 GB/hr.  
  K

Robert Ouzen Ouzen <rouzen@UNIV.HAIFA.AC.IL> wrote:
  Hi 

So if I understand when you change the OS lanfree backup with LANFREECOMMMETHOD of \
SharedMem the backup was FASTER , did you do the same with the DB2 or still \
LANFREECOMMMETHOD of TCPIP ????

Regards

Robert Ouzen

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of TSM_User
Sent: Friday, August 25, 2006 7:07 AM
To: ADSM-L@VM.MARIST.EDU
Subject: Re: [ADSM-L] Storage Agent Upgrade on AIX caused LANFree to slow way down

Curious that I'm replying to my own post but using the LANFREECOMMMETHOD of SharedMem \
the 120 GB of OS data just backed up in 57 minutes. The 60 GB of DB2 data backed up \
in 54 minutes.

So looks like the V5.3.3.0 storage agent is more affected by the use of SharedMem \
over TCPIP. Or, something else changed around the time of the upgrade to break the \
usage of TCP/IP for the LANFREE backup.

I'd still be interested to know if anyone else has seen this behavior.

TSM_User wrote:
Guys,
We had a TSM server and TSM Storage Agent combination of V5.1.1.0. The TSM client on \
the AIX server is at V5.1.7.0. This AIX server is running DB2. We have a Windows 2003 \
TSM server and a 3494 tape library with two Fibre attached 3590 drives.

Anyway the OS backup on this server has 120 GB and was backing up in 54 minutes. The \
DB2 backup on the server had never been configured to run LANFree (don't know why) \
but backed up 60 GB in 1 hour and 45 minutes over the LAN (10/100 NIC).

We upgrade the TSM server to V5.3.3.3 which went without any issues. We then upgraded \
the TSM storage agent to V5.3.3.0 (they like to not put any patches on this very \
important AIX DB2 server unless it is absolutly necessary). According to the doc you \
can use a V5.3.3.0 storage agent with a V5.3.3.3 TSM server without any problems.

Now the storage agent backup of the OS runs in 4 hours and 30 minutes. Yes, we are \
absolutly sure it is still going LANFree. We can see this when we route the "q sess" \
command to the storage agent. We also so that the LANFree bytes transferred shows \
that the whole 120 GB is going LANFree.

We did put "ENABLELANFREE YES" in the dsm.sys that the DB2 agent was in. The DB \
backup is not completing in 1 hour and 15 minutes. We would like it to be faster but \
it is faster than when it ran over the LAN so people are happy with it.

After this upgrade we gained 30 minutes on the DB2 backup but we lost 3 hours and 30 \
minutes on the OS backup.

The dsm.sys files were setup to use lanfreecommmethod of TCPIP. That was good with \
V5.1.1.0. However, seeing that the client and storage agent are on the same server I \
changed the method to SharedMem to see how much of a difference that makes.

So after that book, has anyone else experienced a slow down in Storage Agent speed \
after an upgrade. I've went through many and this is a first for me.

Oh, no errors of any kind in any of the logs.




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