IoT
News
Commentary
3/25/2008
10:24 PM
Howard Marks
Howard Marks
Commentary
Connect Directly
Twitter
RSS
E-Mail
50%
50%
RELATED EVENTS
The Analytics Job and Salary Outlook for 2016
Jan 28, 2016
With data science and big data top-of-mind for all types of organizations, hiring analytics profes ...Read More>>

ExaGrid's Scalable Data Deduping NAS

Aiming for the SME market, ExaGrid System's built a line of data deduping NAS appliances with 5 models designed to protect from 1 Tb to 5 TB of source data. A year ago a vendor coming out with a deduping NAS would have been noteworthy on its own, but this market moves fast and I'm not that easily impressed any more. What makes the ExaGrid boxes intriguing now is that you can stack up to 5 appliances into a single grid with 34 TB of disk space and a data ingestion rate of over 2 TB per hour.

Aiming for the SME market, ExaGrid System's built a line of data deduping NAS appliances with 5 models designed to protect from 1 Tb to 5 TB of source data. A year ago a vendor coming out with a deduping NAS would have been noteworthy on its own, but this market moves fast and I'm not that easily impressed any more. What makes the ExaGrid boxes intriguing now is that you can stack up to 5 appliances into a single grid with 34 TB of disk space and a data ingestion rate of over 2 TB per hour.ExaGrid takes a unique approach to data deduplication. Rather than take an arbitrary backup stream and break it into blocks, ExaGrid's software knowing the format of the backup files created by popular backup applications, including Backup Exec, ARCserve, and Galaxy, identifies each file that's been backed up and compares it with the version of that file from previous back ups. It then replaces the previous version of the file with a delta file describing the changes from the newest version. This preserves the latest versions intact, speeding restores from the latest back up. The down side to this approach is it can't eliminate duplicate data that appears in multiple files or even duplicate files.

Like appliances from competitors Quantum and Data Domain, the ExaGrid appliances can replicate deduped data from a branch office back to another ExaGrid appliance or grid. The data replication is delayed until after the post-process data deduplication completes, which could be hours after the back-up job runs.

Comment  | 
Print  | 
More Insights
Register for InformationWeek Newsletters
White Papers
Current Issue
How to Knock Down Barriers to Effective Risk Management
Risk management today is a hodgepodge of systems, siloed approaches, and poor data collection practices. That isn't how it should be.
Video
Slideshows
Twitter Feed
InformationWeek Radio
Sponsored Live Streaming Video
Everything You've Been Told About Mobility Is Wrong
Attend this video symposium with Sean Wisdom, Global Director of Mobility Solutions, and learn about how you can harness powerful new products to mobilize your business potential.