Hi Del!
Because of your mail down below I implemented TCPWINDOWSIZE 512 on the (LINUX)
clients on our new TSM server with a directory containerpool, but the client
logs are now filled with the following messages:
ANS5246W TCPWINDOWSIZE 512 is specified, but exceeds the maximum value allowed
by the operating system. TCPWINDOWSIZE 244 will be used instead.
What is you recommendation, from a performance perspective, in this situation?
Thanks again for your help!
Kind regards,
Eric van Loon
Air France/KLM Storage Engineering
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Del Hoobler
Sent: dinsdag 21 maart 2017 2:11
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Best Practices/Best Performance SP/TSM B/A Client Settings ?
Hi Ben,
Here are some items to get you started:
Backup-Archive client with limited, high latency network (WAN backups):
===============================
TCPWINDOWSIZE 512
RESOURCEUTILIZATION 4
COMPRESSION Yes
DEDUPLICATION Yes
ENABLEDEDUPCACHE Yes
Tip: Do not use the client deduplication caching for applications that use the
IBM Spectrum Protect API. Refer to section 1.2.3.2.1 for additional details.
Backup/Archive client or Client API with limited network (Gigabit LAN
backups):
===============================
TCPWINDOWSIZE 512
RESOURCEUTILIZATION 10
COMPRESSION Yes
DEDUPLICATION Yes
ENABLEDEDUPCACHE No
Backup/Archive client or Client API with high speed network (10 Gigabit +
LAN backups)
===============================
TCPWINDOWSIZE 512
RESOURCEUTILIZATION 10
COMPRESSION No
DEDUPLICATION No
ENABLEDEDUPCACHE No
Tip: For optimal data reduction, avoid the following client option
combination:
COMPRESSION Yes
DEDUPLICATION No
Del
----------------------------------------------------
"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 03/15/2017
02:39:04 PM:
> From: "Alford, Ben" <balford AT UTK DOT EDU>
> To: ADSM-L AT VM.MARIST DOT EDU
> Date: 03/15/2017 02:39 PM
> Subject: Best Practices/Best Performance SP/TSM B/A Client Settings ?
> Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>
> I've looked at the IBM Blueprint documents but may have missed what
> I was looking for - the Best Practices for Best Performance for TSM
> B/A client settings. As we move from 6.4 to 7.x or 8.x clients
> before the 6.4 EOL, we are looking to test with the current client
> settings optimized for things like TCPBUFFSIZE, TCPWINDOWSIZE,
> TXNBYTLIMIT, etc., etc.
> Thanks!
>
> Ben Alford
> IT Manager, Office of Information Technology
> Systems: Shared Services
>
> The University of Tennessee
>
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