Feeds

Can CDP render backup redundant?

My brain is mush

Mobile application security vulnerability report

Comment Continuous data protection could render dedupe, virtual tape libraries (VTL) and backup software redundant. Er, run that past me again.

Alexander Delcayre, FalconStor's technical director, says that the company's Continuous Data Protection (CDP) product is block-level, not file-level. It captures every write I/O a server makes and journals it. That means that the CDP store is basically capable of becoming a disk image.

You mean, I say, you could do a bare metal restore from this? "Of course," he says.

So we have what I took to be a file recovery technology that can recover a file to any point in time, can in fact also recover a system. Physical and virtual, I asked? "Of course," he said. The CDP product running on a virtualized server contains logical sub-journals within it that save the changes to each VM's virtual disk.

Then I asked a dumb question: "Can you dedupe a CDP repository?" No, you can't but you don't need to, it only saving the changed data at a block level. Ah, cue Eureka moment. Use weekly snapshots to do full copies of disks and CDP to do the highly granular changes and you have a pretty complete disk data protection system.

"In that case, why do you need tape?" I asked. "You don't," he said.

This means, in theory, you don't need deduplication - because that's an answer to an overflow of data problem created by virtual tape libraries. You don't need virtual tape libraries either because they're an answer to a slow and unreliable file restore problem created by tape automation devices. You don't need tape automation devices - because they store data created by tape backup software - which you don't need either because backups aren't granular enough and take too much time.

The whole backup software-to-dedupe stack unravels, along with bare metal recovery products, if you use a block-level continuous data protection product that protects systems as well as files.

Tell me I'm dreaming. FalconStor is weaving a data protection reality distortion field and my brain is mush - or is it?

Update

It's not that Delcayre believes tape is for the chop. He reckons: "CDP could potentially replace traditional backup practices, as long as the customers are ready to change the data protection model. Tape is not dead (yet)." ®

Bridging the IT gap between rising business demands and ageing tools

More from The Register

next story
EU's top data cops to meet Google, Microsoft et al over 'right to be forgotten'
Plan to hammer out 'coherent' guidelines. Good luck chaps!
US judge: YES, cops or feds so can slurp an ENTIRE Gmail account
Crooks don't have folders labelled 'drug records', opines NY beak
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
FLAPE – the next BIG THING in storage
Find cold data with flash, transmit it from tape
Seagate chances ARM with NAS boxes for the SOHO crowd
There's an Atom-powered offering, too
THUD! WD plonks down SIX TERABYTE 'consumer NAS' fatboy
Now that's a LOT of porn or pirated movies. Or, you know, other consumer stuff
prev story

Whitepapers

Reducing security risks from open source software
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Application security programs and practises
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.