Feeds

Flash card latency: Time to get some marks on benches

Chuck out the slicks and platters, and MLC it

7 Elements of Radically Simple OS Migration

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! ®

Best practices for enterprise data

More from The Register

next story
Microsoft's Euro cloud darkens: US FEDS can dig into foreign servers
They're not emails, they're business records, says court
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*
VMware builds product executables on 50 Mac Minis
And goes to the Genius Bar for support
Multipath TCP speeds up the internet so much that security breaks
Black Hat research says proposed protocol will bork network probes, flummox firewalls
Auntie remains MYSTIFIED by that weekend BBC iPlayer and website outage
Still doing 'forensics' on the caching layer – Beeb digi wonk
Microsoft says 'weird things' can happen during Windows Server 2003 migrations
Fix coming for bug that makes Kerberos croak when you run two domain controllers
Cisco says network virtualisation won't pay off everywhere
Another sign of strain in the Borg/VMware relationship?
prev story

Whitepapers

7 Elements of Radically Simple OS Migration
Avoid the typical headaches of OS migration during your next project by learning about 7 elements of radically simple OS migration.
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.
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.
Solving today's distributed Big Data backup challenges
Enable IT efficiency and allow a firm to access and reuse corporate information for competitive advantage, ultimately changing business outcomes.
A new approach to endpoint data protection
What is the best way to ensure comprehensive visibility, management, and control of information on both company-owned and employee-owned devices?