I know this was aimed at Amos, but I thought I would pipe in.
Our DataDomain has NOT got the VTL option and it is configured as FILE with
50GB files:
Device Device Storage Device Format Est/Max
Mount
Class Access Pool Type Capacity
Limit
Name Strategy Count (MB)
--------- ---------- ------- --------- ------ --------
------
A_DD Sequential 1 FILE DRIVE 51,200.0
16
DB_DD Sequential 1 FILE DRIVE 51,200.0
16
DISK Random 5
I_DD Sequential 1 FILE DRIVE 51,200.0
16
LTO4 Sequential 5 LTO DRIVE
DRIVES
Works great, re-claims volumes, etc.
Ben
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of
Schneider, Jim
Sent: Friday, November 12, 2010 11:38 AM
To: ADSM-L@VM.MARIST.EDU
Subject: Re: [ADSM-L] De-dup ratio's
Amos,
We are looking into purchasing one of these options. Do have your
DataDomain device configured at disk or VTL?
Thank you,
Jim Schneider
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of
Amos ADSM
Sent: Friday, November 12, 2010 12:25 PM
To: ADSM-L@vm.marist.edu
Subject: Re: [ADSM-L] De-dup ratio's
Hi All,
Im Using in the last 3 years Protectier, and most of my backup are SQL
Servers ans some ESX Servers, i get 3.9-4 Dedupe ratio, in good times i
manage to get to 6,
In the last 3 Weeks, im running DataDomain , and i get ratio 9 and its
just the begining :-) ( I hope)
In My Site we got 11 TSM Servers, 3 in the Center with more that 1000
Clients (Aix,Linux SQL) and My Diff Backup for my SQL Servers its almost
2 TB a day, and my DD Writes only 100 Gb.
Amos
On 12/11/2010 18:23, Druckenmiller, David wrote:
> I'm curious what others are seeing for de-dup ratios for various
methods.
>
> We're using IBM's ProtecTier for our TSM (5.5) primary pools and only
see about a 4 to 1 ratio. This is less than half of what IBM was
projecting for us. We have roughly 400 clients (mostly Windows servers)
totalling about 135TB of data. Biggest individual uses are Exchange and
SQL Dumps.
>
> Just wondering what others might be getting for other appliances or
with TSM v6?
>
> Thanks
> Dave
>
>
>
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