Hi Ian!
Because you can't reclaim DISK volumes. TSM stores files in aggregates which
will only be freed when all files within the aggregate become expired.
Kindest regards,
Eric van Loon
KLM Royal Dutch Airlines


-----Original Message-----
From: Ian Hobbs [mailto:little_brutus AT ROGERS DOT COM]
Sent: Tuesday, September 21, 2004 00:26
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: D2D on AIX


Question,

 Why not use the DISK device class with RAW volumes?

 Personally, I find FILE classes a pain for user storage because you DO have
to perform reclamation on them.

Ian Hobbs

On Mon, 20 Sep 2004 14:48:07 -0400, Eliza Lau wrote:

>Okay. I got it.  It is a pain to manually define the volumes, but it can be
>done.  I also received your pdf file.
>
>Thanks to everyone who answered,
>Eliza
>
>>
>> It depends upon how you configure things.  For dynamic allocation of
>> volumes, then yes you are limited to the size of the file system that
>> you mount on that mount point.  However if you define the stgpool
>> volumes explicitly using the DEFINE VOLUME command, you can place the
>> volumes across as many file systems as you want.  I will email you a PDF
>> presentation IBM has on Disk Only backups.
>>
>>
>> H. Milton Johnson
>>
>> -----Original Message-----
>> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf 
>> Of
>> Eliza Lau
>> Sent: Monday, September 20, 2004 12:11 PM
>> To: ADSM-L AT VM.MARIST DOT EDU
>> Subject: D2D on AIX
>>
>> Our 3494 with 3590K tapes in 3 frames is getting full.  Instead of
>> adding another frame or upgrading to 3590H or 3592 tapes we are looking
>> into setting up a bunch of cheap ATA disks as primary storage.
>>
>> The FILE devclass defines a directory as its destination and JFS2 has a
>> max file system size of 1TB.  Does it mean the largest stgpool I can
>> define is 1TB?
>>
>> My Exchange stgpool alone has 8TB of data.  Do I have to split it up
>> into 8 pieces?
>>
>> server: TSM 5.2.2.5 on AIX 5.2
>> database 90GB at 70%
>> Total backup data - 22TB
>>
>> Eliza Lau
>> Virginia Tech Computing Center
>> lau AT vt DOT edu
>>
>>



Ian Hobbs
little_brutus AT rogers DOT com
=======================================================
"Never argue with an idiot.  They drag you down to their level then beat
you with experience."
-Dilbert


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