DD has a truly GREAT product; however it will not shrink your backup window if 
that is a concern. The backup application still has to send ALL of the data to 
the DD device for every full backup that you do. Avamar will shrink your backup 
window, as the De-dup is source based, not target based. The downside to Avamar 
is that it is a rip and replace of your existing backup strategy. If you LOVE 
your backup process and are only seeking to replace your failed tape library, 
then Avamar won't be a good fit. However, if you've had headaches with your 
backup process/app, your data footprint is growing (whose isn't), and you're 
considering changing your backup app, I would recommend you consider Avamar.

Also, EMC purchased DD, so I would be cautious about investing in the DD 
product until you see what EMC does with the product line...

http://www.emc.com/about/news/press/2009/20090723-01.htm

HTH - Cheers,

Jonathan L. Raper, A+, MCSA, MCSE
Technology Coordinator
Eagle Physicians & Associates, PA
jra...@eaglemds.com<BLOCKED::mailto:%20jra...@eaglemds.com>
www.eaglemds.com<BLOCKED::http://www.eaglemds.com/>

________________________________
From: Richard Stovall [mailto:richard.stov...@researchdata.com]
Sent: Monday, September 14, 2009 7:38 PM
To: NT System Admin Issues
Subject: RE: Disk based backup

+1

We have a DD530 here and it has been well worth the cost.  A quick glance at 
the nightly emails shows that I threw about 2.8TB of raw data at it last Friday 
that took about 50GB or so of actual disk space.

________________________________
From: Martin Blackstone [mailto:mblackst...@gmail.com]
Sent: Mon 9/14/2009 6:30 PM
To: NT System Admin Issues
Subject: RE: Disk based backup
Check out Data Domain.

From: Evan Brastow [mailto:ebras...@automatedemblem.com]
Sent: Monday, September 14, 2009 3:16 PM
To: NT System Admin Issues
Subject: Disk based backup

Hi guys,

I did a search on subject headings for this year to see if I could find 
anything about this, but nothing jumped out at me.

I have a 1-1/2 year old Tandberg Data T24 storage library and the drive just 
bit the dust six months out of warranty. Tandberg has told me (as expected,) 
"If it turns out the repair and service agreement is close to the cost of a new 
unit, that might serve as an option for you as well."

Before I go down the route of fix or replace I'm wondering if I should look 
into disk based backup? I'm looking to backup about 1.5 TB per night in a 
window that is about six hours in length between backup and verify.

Anyone have disk based backup that's fast and working for them?

Thanks,

Evan













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