Backup Central

Hello NetWorker list.

I am keen on your advice regarding deduplication devices for NetWorker backup
environments.

I am all into doing with DataDomain, both VTL and NFS ways. However, not to
blindfold myself to much - are there any competitors, which could compare with
DataDomain today?

I would appreciate any suggestions on other devices with similar or near
functionality as DataDomain.

WKR
Mats Atari


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

Sure. Just off the top of my head, there is ExaGrid. Google is your friend though. Do a google search for "data deduplication" and see what turns up.

On Sep 2, 2010, at 4:19 AM, Mats Atari wrote:

Hello NetWorker list.

I am keen on your advice regarding deduplication devices for NetWorker backup
environments.

I am all into doing with DataDomain, both VTL and NFS ways. However, not to
blindfold myself to much - are there any competitors, which could compare with
DataDomain today?

I would appreciate any suggestions on other devices with similar or near
functionality as DataDomain.

WKR
Mats Atari


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

On 09/02/10 09:19, Mats Atari wrote:
Hello NetWorker list.

I am keen on your advice regarding deduplication devices for NetWorker backup
environments.

I am all into doing with DataDomain, both VTL and NFS ways. However, not to
blindfold myself to much - are there any competitors, which could compare with
DataDomain today?


I don't know the market for dedup devices although I have worked with DD
lately and rather like them.

If you want cheap dedup options, there is lessfs on Linux and dedup
within ZFS. No idea how well these work.


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

We too have had great success with datadomain and vtl. They have been great with after sale support and really very few problems other than the occasional disk fail which is to be expected. Looking forward to additional feedback.

----- Original Message -----
From: EMC NetWorker discussion <NETWORKER < at > LISTSERV.TEMPLE.EDU>
To: NETWORKER < at > LISTSERV.TEMPLE.EDU <NETWORKER < at > LISTSERV.TEMPLE.EDU>
Sent: Thu Sep 02 15:42:32 2010
Subject: Re: [Networker] DataDomain competitors

On 09/02/10 09:19, Mats Atari wrote:
Hello NetWorker list.

I am keen on your advice regarding deduplication devices for NetWorker backup
environments.

I am all into doing with DataDomain, both VTL and NFS ways. However, not to
blindfold myself to much - are there any competitors, which could compare with
DataDomain today?


I don't know the market for dedup devices although I have worked with DD
lately and rather like them.

If you want cheap dedup options, there is lessfs on Linux and dedup
within ZFS. No idea how well these work.


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

FalconStor

On Thu, Sep 2, 2010 at 8:33 PM, Geoffrey Kenny - Manager, Client
Services <geoffk < at > hylouie.com> wrote:
We too have had great success with datadomain and vtl.  They have been great with after sale support and really very few problems other than the occasional disk fail which is to be expected.  Looking forward to additional feedback.

----- Original Message -----
From: EMC NetWorker discussion <NETWORKER < at > LISTSERV.TEMPLE.EDU>
To: NETWORKER < at > LISTSERV.TEMPLE.EDU <NETWORKER < at > LISTSERV.TEMPLE.EDU>
Sent: Thu Sep 02 15:42:32 2010
Subject: Re: [Networker] DataDomain competitors

On 09/02/10 09:19, Mats Atari wrote:
Hello NetWorker list.

I am keen on your advice regarding deduplication devices for NetWorker backup
environments.

I am all into doing with DataDomain, both VTL and NFS ways. However, not to
blindfold myself to much - are there any competitors, which could compare with
DataDomain today?


I don't know the market for dedup devices although I have worked with DD
lately and rather like them.

If you want cheap dedup options, there is lessfs on Linux and dedup
within ZFS. No idea how well these work.


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER



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There was a thread on the list about AFTD on top of ZFS with dedup
and the results were poor, probably because of misalignment of the save
stream on the AFTD which makes ZFS miss duplicate blocks.

Davina Treiber wrote:
On 09/02/10 09:19, Mats Atari wrote:
Hello NetWorker list.

I am keen on your advice regarding deduplication devices for NetWorker backup
environments.

I am all into doing with DataDomain, both VTL and NFS ways. However, not to
blindfold myself to much - are there any competitors, which could compare with
DataDomain today?


I don't know the market for dedup devices although I have worked with DD
lately and rather like them.

If you want cheap dedup options, there is lessfs on Linux and dedup
within ZFS. No idea how well these work.


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

--

-- Yaron.


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

We've been running a FalconStor VTL and SIR (Single Instance Repository)
for over 2 years, with excellent results. To Networker, it's presented
as a standard SCSI Jukebox.

I find Networker much easier to manage with this model, as data is going
to "tape" rather than AFTD. I also prefer FalconStor's post process
deduplication model, ensuring we don't have any bottle necks during the
backup window. There are some excellent replication tools incorporated
in the system. Unlike many appliances, where the deduplicated data
repository is not shared among devices, FalconStor's repository is
presented globally, and shared among multiple systems for excellent
scalability.

Mark
--
Mark Davis
University of Western Ontario - ITS
email: davism < at > uwo.ca

Mats Atari wrote:
Hello NetWorker list.

I am keen on your advice regarding deduplication devices for NetWorker backup
environments.

I am all into doing with DataDomain, both VTL and NFS ways. However, not to
blindfold myself to much - are there any competitors, which could compare with
DataDomain today?

I would appreciate any suggestions on other devices with similar or near
functionality as DataDomain.

WKR
Mats Atari


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER



via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

fredag 03 september 2010 01:42:32 skrev Davina Treiber:
On 09/02/10 09:19, Mats Atari wrote:
Hello NetWorker list.

I am keen on your advice regarding deduplication devices for NetWorker
backup environments.

I am all into doing with DataDomain, both VTL and NFS ways. However, not
to blindfold myself to much - are there any competitors, which could
compare with DataDomain today?

I don't know the market for dedup devices although I have worked with DD
lately and rather like them.

If you want cheap dedup options, there is lessfs on Linux and dedup
within ZFS. No idea how well these work.

Have played around with lessfs on Linux for some time and found that Networker
savesets doesn't dedup well with fixed block dedupping. This is probably
because the files in savesets almost always start at different positions within
the device block and thus the block is different from last time even if the file
hasn't changed. I just wish there was a feature in Networker to always start a
file in a saveset on a device block boundary...
The compression feature of lessfs does give a around 50% gain, but a pure
compressing filesystem would give you the same. (RFE someone influental... )

Best
Dag


--
Dag Nygren email: dag < at > newtech.fi
Oy Espoon NewTech Ab phone: +358 9 8024910
Träsktorpet 3 fax: +358 9 8024916
02360 ESBO Mobile: +358 400 426312
FINLAND


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Look for Quantum (DXi products)


Cordialement,

Matthieu CHAUSSOY
DGSI/DOSI/DII/Système/Ing & Supp. Système & Stockage
T : 01 71 53 37 29 - M : 06 28 09 87 43 - Fax : 01 71 53 46 40
matthieu.chaussoy < at > sfr.com

5 rue Noël Pons - Rive Défense
92000 Nanterre
www.sfr.com


-----Message d'origine-----
De : EMC NetWorker discussion [mailto:NETWORKER < at > LISTSERV.TEMPLE.EDU] De la part de Dag Nygren
Envoyé : samedi 4 septembre 2010 06:34
À : NETWORKER < at > LISTSERV.TEMPLE.EDU
Objet : Re: [Networker] DataDomain competitors

fredag 03 september 2010 01:42:32 skrev Davina Treiber:
On 09/02/10 09:19, Mats Atari wrote:
Hello NetWorker list.

I am keen on your advice regarding deduplication devices for
NetWorker backup environments.

I am all into doing with DataDomain, both VTL and NFS ways. However,
not to blindfold myself to much - are there any competitors, which
could compare with DataDomain today?

I don't know the market for dedup devices although I have worked with
DD lately and rather like them.

If you want cheap dedup options, there is lessfs on Linux and dedup
within ZFS. No idea how well these work.

Have played around with lessfs on Linux for some time and found that Networker savesets doesn't dedup well with fixed block dedupping. This is probably because the files in savesets almost always start at different positions within the device block and thus the block is different from last time even if the file hasn't changed. I just wish there was a feature in Networker to always start a file in a saveset on a device block boundary...
The compression feature of lessfs does give a around 50% gain, but a pure compressing filesystem would give you the same. (RFE someone influental... )

Best
Dag


--
Dag Nygren email: dag < at > newtech.fi
Oy Espoon NewTech Ab phone: +358 9 8024910
Träsktorpet 3 fax: +358 9 8024916
02360 ESBO Mobile: +358 400 426312
FINLAND




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Investigate FalconStor. We just started using their VTL with SIR (single instance repository). We purchased the VTL as software and put it on a server and storage of our choice. Dedupe is global and there is a lot of flexibility in how to grow the storage.

Our problem with DD was that growth meant buying a big box to begin with or upgrading to a newer, larger box. Since we wanted global dedupe, DD did not meet our requirements.

-Teresa

Teresa Biehler
Information and Technology Services
Rochester Institute of Technology
teresa.biehler < at > rit.edu



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-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER < at > LISTSERV.TEMPLE.EDU] On Behalf Of Mats Atari
Sent: Thursday, September 02, 2010 4:20 AM
To: NETWORKER < at > LISTSERV.TEMPLE.EDU
Subject: [Networker] DataDomain competitors

Hello NetWorker list.

I am keen on your advice regarding deduplication devices for NetWorker backup
environments.

I am all into doing with DataDomain, both VTL and NFS ways. However, not to
blindfold myself to much - are there any competitors, which could compare with
DataDomain today?

I would appreciate any suggestions on other devices with similar or near
functionality as DataDomain.

WKR
Mats Atari


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER


via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

Thanks everybody for your input!

I still happen to like the fact that DataDomain does inline de-dupe and not as
a post-process. But still performs surprisingly well.

Regarding Quantum DXi - used it. Here's where post-processing showed it's
worst possible scenarios.

FalconStor might be worth a second look, still post-processing - but atleast
one user seems to be happy with that.


Thanks.


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