Yes, if you manually move it from one volume to another it will defrag.
But that is a manual process. If you setup a reclamation threshold on a
FILE disk pool, reclamation occurs automatically.
--
Joshua S. Bassi
IBM Certified - AIX 4/5L, SAN, Shark
Tivoli Certified Consultant -ADSM/TSM
eServer Systems Expert -pSeries HACMP
AIX, HACMP, Storage, TSM Consultant
Cell (831) 595-3962
jbassi AT ihwy DOT com
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Salak Juraj
Sent: Thursday, January 09, 2003 11:53 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: TSM Disk Pool Management
would occasional move data (from disk to disk) not resolve this
fragmentation issue?
regards
juraj Salak
> -----Original Message-----
> From: Joshua Bassi [mailto:jbassi AT IHWY DOT COM]
> Sent: Thursday, January 09, 2003 8:17 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: TSM Disk Pool Management
>
>
> Unfortunately disk pools with a device class of DISK get fragmented
> and will incur a higher overhead penalty the longer they exist
> (without data
> moving off to tape). I had a customer try this configuration and it
> ended up blowing up in their face.
>
>
> --
> Joshua S. Bassi
> IBM Certified - AIX 4/5L, SAN, Shark
> Tivoli Certified Consultant -ADSM/TSM
> eServer Systems Expert -pSeries HACMP
>
> AIX, HACMP, Storage, TSM Consultant
> Cell (831) 595-3962
> jbassi AT ihwy DOT com
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
> Of Andy Carlson
> Sent: Thursday, January 09, 2003 11:09 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: TSM Disk Pool Management
>
>
> We have given this a little bit of thought also. You would not need
> to use type=file - just enlarge your current disk pool. Expire will
> age the files out of there. The only thing to watch, is for it to be
> getting full, and more disk needs to be added.
>
>
> Andy Carlson |\ _,,,---,,_
> Senior Technical Specialist ZZZzz /,`.-'`' -. ;-;;,_
> BJC Health Care |,4- ) )-,_.
> ,\ ( `'-'
> St. Louis, Missouri '---''(_/--' `-'\_)
> Cat Pics: http://andyc.dyndns.org/animal.html
>
>
> On Thu, 9 Jan 2003, Hokanson, Mark wrote:
>
> > We are considering creating an extremely large TSM disk storage pool
> > (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone
> > have any really BIG disk pools? Are there tools available
> for managing
>
> > large TSM disk pools over time. (IE: Reclamation, Aging
> Data, etc) The
>
> > documentation from Tivoli suggests that we need to set it up as a
> > device type=FILE. What are the drawbacks using this approach? Is
> > performance dramatically impacted? etc...
> >
> > Thanks in advance,
> >
> > Mark Hokanson
> > Thomson Legal & Regulatory
> >
>
|
