Hi Del,

Thanks for notifying that new feature : I will test it immediately !
I'm however sorry to inform you that contrarily to your assumption, and despite 
the fact that I subscribed to "IBM my notifications"  as well as to " Technical 
Support Newsletter", both related to Spectrum protect, that information did not 
make its way to me ... 
I assume that lots of TSM admins, all of them being pretty occupied by daily 
business activities, and not mandatorily having enough time to seek information 
are in the same case !
I incidentally learnt as well thru your link that " Repair damaged data on a 
replication target" feature had been added in TSM 7.1.5, which is definitively 
a good thing, but I find it a shame that such information is not pushed to 
customers thru the means of newsletters, and that we have to dig in the depths 
of IBM's web site to get such  - important - information.
I fully understand that TSM / Spectrum protect has been subject to numerous 
bugs fixes and improvements in the latest months ( I never lived such an 
upgrade waltz during 15 years of TSM administration), but to my eyes there's 
still lot of space for communication improvement by IBM ! 
Of course, only MHO ...

Cheers.

Arnaud

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Del Hoobler
Sent: Monday, March 21, 2016 10:53 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Real world deduplication rates with TSM 7.1 and container pools

I think most of you know Spectrum Protect just added in-line compression 
to the container and cloud deduplicated pools in version 7.1.5:

 
http://www.ibm.com/support/knowledgecenter/SSGSG7_7.1.5/srv.common/r_techchg_srv_compress_715.html

Adding incremental forever, the new in-line deduplication - client or 
server-based (7.1.3), new in-line compression (7.1.5) I think you will 
find that Protect continues to drive overall data reduction. This is being 
done in the software, so you can choose what disk you want to use.

I encourage folks to try out the the new deduplication along with the new 
compression to see how it helps with the overall data reduction. 


Thank you,

Del

----------------------------------------------------



"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 03/18/2016 
10:41:06 AM:

> From: PAC Brion Arnaud <Arnaud.Brion AT PANALPINA DOT COM>
> To: ADSM-L AT VM.MARIST DOT EDU
> Date: 03/18/2016 10:41 AM
> Subject: Real world deduplication rates with TSM 7.1 and container pools
> Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
> 
> Hi All,
> 
> We are currently testing TSM 7.1 deduplication feature, in 
> conjunction with container based storage pools.
> So far, my test TSM instances, installed with such a setup are 
> reporting dedup percentage of 45 %, means dedup factor around 1.81, 
> using a sample of clients which are representative of our production
> environment.
> This is unfortunately pretty far from what was promised by IBM 
> (dedup factor of 4) ...
> 
> I'm wondering if anybody making use of container based storage pools
> and deduplication would be sharing his deduplication factor, so that
> I could have a better appreciation of real world figures.
> If you would be so kind to share your information (possibly with the
> kind of backed-up data  i.e. VM, DB, NAS, Exchange, and retention 
> values ...) I would be very grateful !
> 
> Thanks in advance for appreciated feedback.
> 
> Cheers.
> 
> Arnaud
> 
> 
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