Filed by NetApp, Inc. Pursuant to Rule 425
Under the Securities Act of 1933
And Deemed Filed Pursuant to Rule 14a-12
Under the Securities Exchange Act of 1934
Subject Company: Data Domain, Inc.
Commission File No.: 333-159722
The filing below relates to the proposed acquisition of Data Domain, Inc. (Data Domain) by
NetApp, Inc. (NetApp) pursuant to the terms of an Agreement and Plan of Merger, by and among
NetApp, Kentucky Merger Sub One Corporation, Derby Merger Sub Two LLC, and Data Domain, dated as of
May 20, 2009, as amended on June 3, 2009.
Posting on the Ask Dr. Dedupe Blog by NetApp Senior Marketing ManagerStorage
Efficiency Solutions Larry Freeman on June 16, 2009
EMCs Celerra dedupe calculator doesnt add up
I ran across this EMC dedupe calculator today. Interested in the space savings EMC was
advertising for primary storage with dedupe, thought Id take a closer look. I was surprised by the
results. The calculator asks you to input the Size of Current Data for seven different
application categories. So I ran the calculator 7 times, each time entering 10TB into the 7
categories, one at a time. Here are the results I got:
EMC Celerra Data Duplication Calculator
(Data Duplication? I sure hope thats a typo)
Potential Savings:
Active virtual machine files 0TB (0%) saved
Active databases and messaging files 0TB (0%) saved
Compressed files .2TB (2%) saved
Media files .4TB (4%) saved
Binaries 1.7TB (17%) saved
Office documents 3.3TB (33%) saved
Text files 5.3TB (53%) saved
Wait a minute, this cant be right. 4 of the 7 categories offer between 0% and 4% savings. Doesnt
seem like its worth the effort. Well how about Binaries at 17% savings? But EMC only dedupes
inactive files which of my binaries are inactive? Not sure, so I think Ill skip that one.
Office documents bingo 33% saved but again this only applies to inactive docs, so I guess my
savings will be a little less. Finally, there are text files with a whopping 53% savings but I
probably dont have 10TB in inactive .txt files though. At this point, I am a little disappointed
in EMC.
The way I see it, using Celerra dedupe in a real world scenario would produce maybe 5% overall
savings on a good day. The problem you see is that the majority of user data is tied up in those
darned applications that Celerra dedupe cant touch. The puzzling part is why EMC would include
applications with zero percent savings in their calculator. Trying to deceive users? Nah there must
be some other explanation. Guess Ill leave that one up to them to answer.
Your voice in the search for dedupe honesty-
DrDedupe
Additional Information and Where to Find It
In connection with the proposed acquisition of Data Domain, on June 4, 2009, NetApp filed with the
SEC a Registration Statement on
Form S-4 containing a Proxy Statement/Prospectus for Data Domains
stockholders. Before making any investment or voting decision, investors are urged to read the
documents filed with the SEC carefully in their entirety because such
documents contain important
information about the proposed transaction. You may obtain free copies of the Form S-4 and other
documents filed with the SEC by NetApp and Data Domain through the web site maintained by the SEC
at www.sec.gov, on NetApps website at www.netapp.com and on Data Domains website
at www.datadomain.com.
Posting on the Exposed Blog by NetApp Chief Technology Officer-At-Large Val Bercovici on
June 16, 2009
Freudian Typo
Given everything thats going on between us and EMC lately, this has to be the most unfortunately
timed corporate typo in quite a while. OTOH if you take EMC claims at face value, then this kinda
proves the point that our FAS & V-Series primary dedupe is superior.
Kudos to the good doctor for catching this!
Additional Information and Where to Find It
In connection with the proposed acquisition of Data Domain, on June 4, 2009, NetApp filed with the
SEC a Registration Statement on Form S-4 containing a Proxy Statement/Prospectus for Data Domains
stockholders. Before making any investment or voting decision, investors are urged to read the
documents filed with the SEC carefully in their entirety because such documents contain important
information about the proposed transaction. You may obtain free copies of the Form S-4 and other
documents filed with the SEC by NetApp and Data Domain through the web site maintained by the SEC
at www.sec.gov, on NetApps website at www.netapp.com and on Data Domains website
at www.datadomain.com.