Feeds

Data Domain doing faster dedupe

Doubling up and up

Security for virtualized datacentres

Data Domain has increased the speed of its deduplication to between 50 and 100 percent through a software update.

The speed boost varies from 50 per cent on DD510, 530, and 580 models, 58 per cent on the DD565, up to 90 per cent on the DD690g and DDX array, and 100 per cent on the DD120.

The DD690g had a 1.4TB/hour throughput rating when it was introduced in May last year. Now it is 2.7TB/hour (with Symantec NetBackup OpenStorage and a 10GbitE connection).

It makes you wonder whether the code was that bad; clearly there was room for improvement. What Data Domain has done is to get its deduplication code executing better on multi-core CPUs so that more is done in parallel. The code, using a technology Data Domain calls Stream Informed Segment Layout (SISL), has been tuned so that it makes better use of the available cores.

Data Domain's platform operating software has revved from DD OS v4.5 to 4.6. Shane Jackson, senior director for product and channel marketing at Data Domain, contrasts competing vendors who, he says, rely on adding disk spindles to boost deduplication speed, with Data Domain's reliance on CPU speed. "Intel shows up with a faster processor more often than Seagate shows up with a faster drive," he says.

That's over-egging the pudding, as all dedupe vendors rely on software and disks. Data Domain happens to have, it appears, as good as if not better software algorithms than most, certainly enough for it to suggest its products can be used to deduplicate some primary storage applications.

The neat aspect of this is that it's widely expected to introduce new, Nehelem-boosted hardware later this year. With 8 cores available there should be another doubling or near-doubling of performance compared to the current quad core Xeons being used. That means a DD690-type product could ramp its performance up to 5.4TB/hour, meaning 90GB/min or 1.5GB/sec.

Sepaton and Diligent, now owned by IBM, emphasise their deduping speed and NetApp also pushes its ASIS dedupe into some primary data deduplication applications.

Two thoughts: first, it looks as if a deduping race is on. Secondly, it begins to look as if inline deduplication is quite viable for the majority of backup applications.

Offline dedupe vendors say that, to keep backup speeds high you really should land the backup data uninterrupted by any processing and dedupe it afterwards. At speeds of up to 750MB/sec now and with 1.5GB/sec speeds coming, Data Domain would say that most backup applications could be deduped inline and avoid the need for a substantial chunk of disk capacity kept aside to land the raw data. ®

Providing a secure and efficient Helpdesk

More from The Register

next story
Docker's app containers are coming to Windows Server, says Microsoft
MS chases app deployment speeds already enjoyed by Linux devs
IBM storage revenues sink: 'We are disappointed,' says CEO
Time to put the storage biz up for sale?
'Hmm, why CAN'T I run a water pipe through that rack of media servers?'
Leaving Las Vegas for Armenia kludging and Dubai dune bashing
Facebook slurps 'paste sites' for STOLEN passwords, sprinkles on hash and salt
Zuck's ad empire DOESN'T see details in plain text. Phew!
Windows 10: Forget Cloudobile, put Security and Privacy First
But - dammit - It would be insane to say 'don't collect, because NSA'
Symantec backs out of Backup Exec: Plans to can appliance in Jan
Will still provide support to existing customers
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.