Feeds

Flash card latency: Time to get some marks on benches

Chuck out the slicks and platters, and MLC it

Build a business case: developing custom apps

Fusion-io flash cards outperformed a slew of competitors in a Marklogic NoSQL benchmark reported by StorageReview - for which much thanks.

The benchmark rig is detailed in the article text and it notes that tested storage configs must have a more-than-650GB usable capacity, meaning individual flash devices can be bunched up.

Here's the chart graphing the overall latency results:-

MarkLogic small

Hurts your squinting eyes? Click on image for instant relief.

The chart ranks various flash products in order of overall latency on a MarkLogic NoSQL database benchmark and it looks like the top two results show Dell and Micron blowing virtually everybody else out of the water, and so they should. Both of them use fast SLC flash and the Dell one is based on Micron's P320h SSDs. So let's discount these as all the others, except 4th-placed Fusion-io (FIO) ioDrive2 Duo, are all slower multi-level or layer cell (MLC) flash.

FIO's 2.4TB MLC ioDrive2 Duo rules supreme with the lowest overall latency, 1.698ms - not that much slower than the two faster SLC products actually.

The bottom two results use Toshiba 2.5-inch disk drives, one with hardware RAID and the other, the slowest one, with software RAID.

The graph bunches up the MLC flash products. If we toss out the SLC flash products and the two disk drives we can better see how the MLC flash products stack up, by lengthening the horizontal axis.

MLC Only small

You know already; click on chart for larger view.

There is quite a degree of latency with the bottom four configs having at least twice the latency of the top three. The poor FIO result (third slowest) is based on the ioDrive2 and not the ioDrive2 Duo. The OCZ Z-Drive and Smart Optimus products do very well, better than Virident's FlashMAX II, which is unexpected. Intel does relatively poorly, as do the OCZ Talos and Deneva products.

Read the individual product reviews in the Storage Review article text for exhaustive discussions of the technology involved. Exhaustive I say - and that's me saying it! ®

Boost IT visibility and business value

More from The Register

next story
The Return of BSOD: Does ANYONE trust Microsoft patches?
Sysadmins, you're either fighting fires or seen as incompetents now
Microsoft: Azure isn't ready for biz-critical apps … yet
Microsoft will move its own IT to the cloud to avoid $200m server bill
Shoot-em-up: Sony Online Entertainment hit by 'large scale DDoS attack'
Games disrupted as firm struggles to control network
Cutting cancer rates: Data, models and a happy ending?
How surgery might be making cancer prognoses worse
Silicon Valley jolted by magnitude 6.1 quake – its biggest in 25 years
Did the earth move for you at VMworld – oh, OK. It just did. A lot
VMware's high-wire balancing act: EVO might drag us ALL down
Get it right, EMC, or there'll be STORAGE CIVIL WAR. Mark my words
Forrester says it's time to give up on physical storage arrays
The physical/virtual storage tipping point may just have arrived
prev story

Whitepapers

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.
Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Scale data protection with your virtual environment
To scale at the rate of virtualization growth, data protection solutions need to adopt new capabilities and simplify current features.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?