Unless you have a specific requirement, I would suggest you choose either TSM
dedup to disk or go straight to virtual tape. There is not usually a need to
do both.
David
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Dan Haufer
Sent: Thursday, June 12, 2014 2:41 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] TSM and VTL Deduplication
Thanks for all the answers. So SSDs (Looking at SSD caching) for the database
storage and 10GB per TB of total backup data on the safer side.
--------------------------------------------
On Thu, 6/12/14, Erwann Simon <erwann.simon AT FREE DOT FR> wrote:
Subject: Re: [ADSM-L] TSM and VTL Deduplication
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thursday, June 12, 2014, 8:47 AM
Hi,
I'd rather say 6 to 10 times, or 10 GB of
DB for each 1 TB of data (native, not deduped) stored.
--
Best
regards / Cordialement / مع تحياتي
Erwann SIMON
-----
Mail original -----
De: "Norman
Gee" <Norman.Gee AT LC.CA DOT GOV>
À: ADSM-L AT VM.MARIST DOT EDU
Envoyé: Jeudi 12 Juin 2014 16:55:29
Objet: Re: [ADSM-L] TSM and VTL
Deduplication
Be prepare
for your database size to double or triple if you are using
TSM deduplication.
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]
On Behalf Of Prather, Wanda
Sent: Thursday,
June 12, 2014 7:15 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: TSM and VTL Deduplication
And if you are on the
licensing-by-TB model, when it gets un-deduped (reduped,
rehydrated, whatever), your costs go up!
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]
On Behalf Of Dan Haufer
Sent: Thursday, June
12, 2014 9:48 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] TSM and VTL
Deduplication
Understood.
Thanks !
--------------------------------------------
On Thu, 6/12/14, Ehresman,David E. <deehre01 AT LOUISVILLE DOT EDU>
wrote:
Subject: Re:
[ADSM-L] TSM and VTL Deduplication
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thursday, June 12, 2014, 5:33 AM
If TSM moves data from a
(disk) dedup pool to tape, TSM has to un-dedup
the data as it reads it
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