Kevin,

 

I would very much appreciate the chance to outline the differences
between Data Domain's approach to backup vs. ExaGrid systems.

 

Data Domain uses Block-Level data deduplication.  They also do the
process in-line to use less disk.

 

The problems with this approach are:

 

Backup performance is impeded by in-line de-duplication

Backup performance is impeded because you have to put all the blocks
back together again.

Tape copy performance is impeded because you have to put all the blocks
back together again.

Performance degrades as data grows because they only add storage
capacity and not additional process/memory to in-line

De-dupe the growing data.

 

Their net:

 

Higher priced

Slower performance for backup, restore and tape copy

Poor scalability

 

ExaGrid has focused on the backup process and built a system to improve
backup with grid scalability.

 

Fast backup performance - shortest backup window

Fast restore - 90% of restores come from the most recent backup, and
ExaGrid retains the last full backup in its entirety.

Fast Tape Copy

Performance scales as the data grows

All at the best price

 

http://www.exagrid.com <http://www.exagrid.com/> 

 

http://www.exagrid.com/backup_applications/EMC_NetWorker.asp

 

How many TB's are you backing up in a Full?

Do you need a 1 or 2 site?

May I do a presentation for you? (online or in-person)

 

Best,

Steve Duffy

 

Stephen Duffy

ExaGrid Systems, Inc.

2000 West Park Drive, Suite 110

Westborough, MA  01581

Office: 774-760-0325 direct

Mobile: 603-498-3852

sduffy AT exagrid DOT com

http://www.exagrid.com <http://www.exagrid.com/> 

Cost-effective Disk-based Backup

 

 

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of Kevin Malone
Sent: Thursday, May 08, 2008 2:01 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] Networker and Data Domain

 

If there is anyone out there who is using a Data Domain dedupe solution
with Networker and would be willing to have a conversation (good or bad)
about it with me, I would be appreciative.  

 

We are looking at dedupe solutions and I am not endorsing any at this
point, but that is one that we have come across.

 

You can send me a private e-mail so as not to clog up the listserv.

 

Thanks,

Kevin

 

 

 

Kevin Malone

Network Administrator

Salisbury University

Information Technology  FH297

kcmalone AT salisbury DOT edu

410-543-6298

 

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