Comments on: HDS Goes For 25X Backup Data Compression - Almost http://storagemojo.com/2006/07/10/hds-goes-for-25x-backup-data-compression-almost/ Data storage info & analysis Fri, 21 Nov 2008 19:45:14 +0000 http://wordpress.org/?v=2.6.3 By: Robin Harris http://storagemojo.com/2006/07/10/hds-goes-for-25x-backup-data-compression-almost/#comment-3395 Robin Harris Fri, 14 Jul 2006 02:02:32 +0000 http://storagemojo.com/?p=187#comment-3395 These comments are courtesy of Bill Andrews, CEO of Exagrid. Anyone with amplification or amendment is welcome to comment. There are four basic methods of data reduction. At the client server level with an agent - take out the duplicate data at the block level – Avamar Behind the existing backup server - take out the duplicate data at the block level – Data Domain, Quantum/ADIC/RockSoft Behind the existing backup server - take out near duplicate block level data and then do byte-level delta – Diligent Behind the existing backup server - take out duplicate data at the byte-level using byte-level delta technology – ExaGrid, Sepaton To truly use the existing backup application and backup server you must be a VTL or NAS based target. In this way the backup servers are simply pointed at the NAS or VTL. The market breaks out into two markets: Mid Market / Small Enterprise 300 to 3,000 employees Ethernet environment Customers prefers simplicity and cost of a NAS target behind their backup server with data reduction They do not want the cost or complexity of VTL ExaGrid and Data Domain Enterprise Market Fortune 2000 type companies Fiber SAN environment Want VTL with data reduction for a variety of reasons Quantum, Data Domain, Diligent, Sepaton, Falconstor Vendors who are shipping NAS based disk based backup products with data reduction that sit behind the existing backup server ExaGrid Data Domain Vendors shipping VTL based disk based backup products with data reduction that sit behind the existing backup server Data Domain Diligent Vendors who have announced VTL disk based backup products with data reduction but are NOT shipping as of yet Falconstor Quantum Sepaton Avamar is not a disk-based backup product but is a true competitor to the existing backup products since you must take out the existing backup agents and replace them with Avamar. They compete with NetBackup, Galaxy, TSM, BackupExec, etc. They require agents on the all the application servers in place of the current backup application agents. In other words they do not sit behind the existing backup server. Symantec is not a disk-based backup product, with PureDisk, as they applied data reduction to remote site backup which brings the data back to a central site to be backed up. In other words they do not sit behind the existing backup server. These comments are courtesy of Bill Andrews, CEO of Exagrid. Anyone with amplification or amendment is welcome to comment.

There are four basic methods of data reduction.
At the client server level with an agent - take out the duplicate data at the block level – Avamar
Behind the existing backup server - take out the duplicate data at the block level – Data Domain, Quantum/ADIC/RockSoft
Behind the existing backup server - take out near duplicate block level data and then do byte-level delta – Diligent
Behind the existing backup server - take out duplicate data at the byte-level using byte-level delta technology – ExaGrid, Sepaton

To truly use the existing backup application and backup server you must be a VTL or NAS based target. In this way the backup servers are simply pointed at the NAS or VTL.

The market breaks out into two markets:

Mid Market / Small Enterprise
300 to 3,000 employees
Ethernet environment
Customers prefers simplicity and cost of a NAS target behind their backup server with data reduction
They do not want the cost or complexity of VTL
ExaGrid and Data Domain

Enterprise Market
Fortune 2000 type companies
Fiber SAN environment
Want VTL with data reduction for a variety of reasons
Quantum, Data Domain, Diligent, Sepaton, Falconstor

Vendors who are shipping NAS based disk based backup products with data reduction that sit behind the existing backup server
ExaGrid
Data Domain

Vendors shipping VTL based disk based backup products with data reduction that sit behind the existing backup server
Data Domain
Diligent

Vendors who have announced VTL disk based backup products with data reduction but are NOT shipping as of yet
Falconstor
Quantum
Sepaton

Avamar is not a disk-based backup product but is a true competitor to the existing backup products since you must take out the existing backup agents and replace them with Avamar. They compete with NetBackup, Galaxy, TSM, BackupExec, etc. They require agents on the all the application servers in place of the current backup application agents. In other words they do not sit behind the existing backup server.

Symantec is not a disk-based backup product, with PureDisk, as they applied data reduction to remote site backup which brings the data back to a central site to be backed up. In other words they do not sit behind the existing backup server.

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