Feeds

Isilon makes grab at NAS performance crown

SPEC claims drowned out by bickering

HP ProLiant Gen8: Integrated lifecycle automation

Isilon's claimed SPEC benchmark score has shown just how good Exanet systems are - says Isilon.

Isilon, which provides scale-out NAS clusters, has published the results of a Standard Performance Evaluation Corporation (SPEC) sfs2008 NFS benchmark for its IQ 5400S product. A 10-node 5400S cluster delivered 46,635 IOPS, with a corresponding overall response time of 1.91msec. The company says it is the first scale-out NAS supplier to publish a SPEC sfs2008 benchmark and has set a performance bar.

But both claims are being hotly disputed by a rival.

Exanet also provides clustered NAS systems, scaling to 1PB by adding nodes, and has published SPEC sfs2008 NFS benchmark results. In August 2008 its ExaStore 2008 Clustered NAS achieved 119,550 operations per second with an overall response time of 2.07 milliseconds, a world record. The Isilon system has not exceeded that.

Exanet benchmarked an 8-node ExaStore Clustered NAS System, based on ExaStore 2008 software, EX1500 NAS Servers, and DX12 storage arrays. It had 224GB of memory, and 592 disk drives with 64.5TB of capacity. The EX1500 servers, like the Isilon 5400S, use dual quad-core Xeon processors.

Isilon's 10-node cluster had 165GB of memory and 120 disk drives with a 48TB capacity. What this comes down to is that the 10-node Isilon cluster, with five times fewer drives and a third less capacity, delivered 39 per cent of the performance of an 8-node Exanet cluster with many more disks but greater capacity. It looks like spindles count, much more so than compute horsepower.

Sam Grocott, Isilon's senior director of product management, said: “(Isilon is) the first and only scale-out NAS system to publish the SPEC sfs2008 benchmark."

With Exanet having published its sfs2008 results last year and comfortably exceeding Isilon's sfs2008 performance this claim, and the performance bar one, both seem to be incorrect.

A person familiar with the situation said: "Absolutely not. Isilon is definitely not the first."

Nir Peleg, one of Exanet's founders, checked the Exanet and Isilon SPEC sfs2008 benchmark reports and confirmed the numbers above: "It seems to be all correct."

Asked if Isilon was wrong to claim to be the first scale-out NAS vendor to publish sfs2008 benchmark numbers and also wrong to claim to set a performance bar, Peleg said: "Right." He added: "We didn't tune our systems and we think we could achieve the same numbers with fewer disk drives."

Isilon is standing by its claims.

Sam Grocott said that Isilon doesn't consider Exanet has a true scale-out NAS architecture. As defined by Gartner and others it means scaling out performance and capacity in a single file system and a single volume. He said Exanet's architecture involves multiple volumes with eight or twelve clustered server heads and hundreds or thousands of disk drives stacked behind them. There are multiple volumes and it's a traditional clustered NAS architecture, not a true scale-out NAS concept.

He said an Isilon cluster could scale out to 144 nodes and about 650,000 IOPS, more than five times higher than the Exanet number. ®

Reducing security risks from open source software

More from The Register

next story
Sysadmin Day 2014: Quick, there's still time to get the beers in
He walked over the broken glass, killed the thugs... and er... reconnected the cables*
Amazon Reveals One Weird Trick: A Loss On Almost $20bn In Sales
Investors really hate it: Share price plunge as growth SLOWS in key AWS division
US judge: YES, cops or feds so can slurp an ENTIRE Gmail account
Crooks don't have folders labelled 'drug records', opines NY beak
Auntie remains MYSTIFIED by that weekend BBC iPlayer and website outage
Still doing 'forensics' on the caching layer – Beeb digi wonk
SHOCK and AWS: The fall of Amazon's deflationary cloud
Just as Jeff Bezos did to books and CDs, Amazon's rivals are now doing to it
BlackBerry: Toss the server, mate... BES is in the CLOUD now
BlackBerry Enterprise Services takes aim at SMEs - but there's a catch
The triumph of VVOL: Everyone's jumping into bed with VMware
'Bandwagon'? Yes, we're on it and so what, say big dogs
Carbon tax repeal won't see data centre operators cut prices
Rackspace says electricity isn't a major cost, Equinix promises 'no levy'
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.