Veritas-bu

[Veritas-bu] LTO 3 - Windows 2003 SP1 - NBU 5.x poor performance

2007-01-03 17:26:15
Subject: [Veritas-bu] LTO 3 - Windows 2003 SP1 - NBU 5.x poor performance
From: mchiapusso at hotmail.com (marco chiapusso)
Date: Wed, 03 Jan 2007 23:26:15 +0100
cheched even the driver and the firmware (IBM and Veritas approved from 
qlogic hba 2200). The zone 1 initiator and 1 target... so 4 zones for each 
host
The strange thing it's that it seems that the server doesn't work.. 
monitoring the CPU,RAM etc etc it's seems quite good not CPU overload or 
something like this... The SAN throughtput it's the same.. poor : (... When 
I start the job I saw the from the mounting time and the begin writing it 
get a lot of time about 2 minutes... it seems that nothing happen...

>From: "Haskins, Steve" <Steve.Haskins at bannerhealth.com>
>To: "marco chiapusso" <mchiapusso at hotmail.com>
>Subject: RE: [Veritas-bu] LTO 3 - Windows 2003 SP1 - NBU 5.x poor 
>performance
>Date: Wed, 3 Jan 2007 15:09:15 -0700
>
>Assuming you're not the SAN administrator, have you checked with them on
>SAN throughput, HBA drivers & firmware, etc. We had to dedicate a zone
>to the Netbackup system.
>
>-----Original Message-----
>From: veritas-bu-bounces at mailman.eng.auburn.edu
>[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of marco
>chiapusso
>Sent: Wednesday, January 03, 2007 2:59 PM
>To: veritas-bu at mailman.eng.auburn.edu
>Subject: [Veritas-bu] LTO 3 - Windows 2003 SP1 - NBU 5.x poor
>performance
>
>Hi Guys, still in trouble with LTO3 performance...
>I've change everything but it doesn't work!!! oufff
>I installed a lot of NBU domain but this time I hate them all!!!
>
>The enviroment it's all Windows 2003 sp1 , 1 master and 4 SAN Media
>Manager
>(clustered)
>The tape library it's an IBM 3584 with 4 IBM LTO3, SAN connected
>
>The maximum performance it's about ehm ehm 7 MB/sec ... kill me plz!!!
>
>I have tried all the combination
>SIZE_DATA_BUFFERS 256k
>NUMBER_DATA_BUFFERS 32 - 48 - 64 -128 -256
>
>MPX 4 - 8
>FRAGMENT SIZE 4 MB & 10GB
>
>The funny things it's that I have some optimization of my perfromance
>from 5
>MB/sec to 7 using NUMBER at 64, incrising them upper to 256  no
>CHANGES!!!
>
>I look to BPTM logs (verbose 5) I find a lot of waited for full
>buffer...
>
>Now I'm reading something about tape.sys and Maximumsg... changed
>Maximum to
>FF nothing!!!
>
>I'm using IBM tape drivers on windows... all the media server have the
>same
>performance issue..
>
>Any IDEA plz!!!!! Dont' say open a case to support ..!!! LOL
>
>Txs again guys!!!
>
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