ADSM-L

Re: Random Access Disk Pools

2006-03-25 13:26:48
Subject: Re: Random Access Disk Pools
From: Andrew Carlson <naclos AT SWBELL DOT NET>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Sat, 25 Mar 2006 10:26:31 -0800
Heh - I wasn't thinking about that many volumes, but it's good to
keep in mind.  Thanks.

--- Andy Huebner <Andy.Huebner AT ALCONLABS DOT COM> wrote:

> Be careful with how many disk pool volumes you create.  Each volume
> uses
> 1 thread, add this to all of the other threads in use, our TSM
> server
> would die at around 1800 active threads.
> 
> Andy Huebner
> 
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
> Behalf Of
> Andrew Carlson
> Sent: Friday, March 24, 2006 11:04 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: [ADSM-L] Random Access Disk Pools
> 
> I have heard in the past that random access disk pools can become
> fragmented and practically unusable after a while.  I was wondering
> if anyone sees this in the real world?  I posted the other day
> about
> managing predefined volumes in a file type devclass, and the only
> answer I got said they were using random access pools.  I would
> MUCH
> rather have a random access pool, so if there is no problem with
> this, I will convert over to random access.  Thanks for any input.
> 
> TSM 5.3.2.3 on AIX 5.2.5  EMC Clarion Disk, 120 TB in 2TB LUN's
> 
> Andy Carlson 
>
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Andy Carlson 
---------------------------------------------------------------------------
Gamecube:$150,PSO:$50,Broadband Adapter: $35, Hunters License: $8.95/month,
The feeling of seeing the red box with the item you want in it:Priceless.

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