ADSM-L

Re: [ADSM-L] DB2: SSD vs more RAM

2010-11-17 12:50:19
Subject: Re: [ADSM-L] DB2: SSD vs more RAM
From: Remco Post <r.post AT PLCS DOT NL>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 17 Nov 2010 18:50:02 +0100
SSD to me seems overkill if you already have 24 GB of RAM, unless you need 
superfast performance and are going to run a very busy TSM server with a huge 
amount of concurrent sessions.

-- 

Gr., Remco

On 17 nov. 2010, at 12:16, "Pretorius, Louw <louw AT sun.ac DOT za>" <louw AT 
SUN.AC DOT ZA> wrote:

> Hi all,
> 
> I am currently in the process of setting up specifications for our new TSM6.2 
> server.  
> 
> I started by adding 8 x SSD 50GB disks to hold OS and DB, but because of the 
> high costs was wondering if it's possible to rather buy more RAM and increase 
> the DB2 cache to speed up the database.
> 
> Currently I have RAM set at 24GB but its way cheaper doubling the RAM than to 
> buy 8 x SSD's
> Currently I have 8 x SSD vs 6 x SAS 15K 
> 
> Any ideas?
> Louw Pretorius                   
> 
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf 
> Of Shawn Drew
> Sent: 16 November 2010 23:04
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: [ADSM-L] TSM5.5/AIX61 Performance Monitoring
> 
> Looking for some tips on performance monitoring.  I've been through the 
> tuning guide, but I'm looking for monitoring CPU/Memory, HBA usage, disk/tape 
> performance, etc.
> 
> I'm wondering what are the favorite tools on this list.   From what I can
> gather nmon doesn't collect tape drive data, which is one of my major 
> interests.
> 
> I need to collect historical data for long term trends.  Does anyone know if 
> you can keep topas output in single, periodic snapshots like nmon?
> 
> 
> Regards,
> Shawn
> ________________________________________________
> Shawn Drew
> 
> 
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