|By Chris Evans||
|November 14, 2012 08:30 AM EST||
In the first wave of solid-state storage arrays, we saw commodity style SSDs (solid state drives) being added to traditional storage arrays. This solution provided an incremental benefit in performance over spinning hard drives, however the back-end technology in these arrays was developed up to 20 years ago and was purely focused around driving performance out of the slowest part of the infrastructure – the hard drive. Of course SSDs are an order of magnitude faster than HDDs so you can pretty much guarantee SSDs in traditional arrays results in underused resources, but is premium priced.
Wave 2 of SSD arrays saw the development of custom hardware, mostly still continuing to use commodity SSDs. At this point we saw full exploitation of the solid state capabilities, with architecture designed to provide the full performance capabilities of solid state drives. These arrays removed unnecessary or bottlenecking features (like cache) and provided much more back-end scalability. Within the wave 2 group, Nimbus Data have chosen a hybrid approach and developed their own solid state drives. This gives them more control over the management functionality of the SSDs and subsequently more control over performance and availability.
Notably, some startup vendors have taken a slightly different approach. Violin Memory have chosen from day 1 to use custom NAND memory cards called VIMMs (Violin Intelligent Memory Module). This technology removes the need for NAND to emulate a hard drive and for the interface between the processor/memory & persistent memory (e.g. the NAND) to go across a hard drive interface like SAS using the SCSI protocol. Whilst it could be debated that the savings from removing the disk drive protocol could be marginal, the use of NAND that doesn’t emulate hard drives is about much more than that. SSD controllers have many features to extend the life of the drive itself. This includes wear levelling and garbage collection, features that could have a direct impact on device performance. Custom NAND components can, for instance allow wear levelling to be achieved across the entire array or for individual cell failures to be managed more efficiently.
Building bespoke NAND components isn’t cheap. Violin have chosen to invest in technology that they believe gives them an advantage in their hardware – no dependency on SSD manufacturers. The ability to build advanced functionality into their persistent memory means availability can be increased (components don’t need to be swapped out as frequently – failing components can be partially used).
At this point we should do a call out to Texas Memory Systems, recently acquired by IBM. They have also used custom NAND components; their RamSan-820 uses 500GB flash modules using eMLC memory.
I believe that the third wave will see many more vendors looking to move away from the SSD form factor and building bespoke NAND components as Violin have done. Currently Violin and TMS have the headstart. They’ve done the hard work and built the foundation of their platform. Their future innovations will probably revolve around bigger and faster devices and replacing NAND with whatever is the next generation of persistent memory.
Last week, HDS announced their approach to full flash devices; a new custom-build Flash Module Drive (FMD) that can be added to the VSP platform. This provides 1.6TB or 3.2TB (higher capacity due March 2013) of storage per module, which can then be stacked into an 8U shelf of 48 FMDs in total – a total of 600TB of flash in a single VSP. Each FMD is like a traditional SSD drive in terms of height and width, but is much deeper in size. It appears to the VSP as a traditional SSD.
The FMD chassis is separate to the existing disk chassis that are deployed in the VSP and so FMDs can’t be deployed in conjunction with hard drives. Although this seems like a negative, the flash modules have higher specification back-end directors (to fully utilise the flash performance), which, in addition to their size, explains why they wouldn’t be mixed together.
Creating a discrete flash module provides Hitachi with a number of benefits compared to individual MLC SSDs including:
- Higher performance on mixed workloads
- Inbuilt compression using the onboard custom chips
- Improved ECC error correction using onboard code and hardware
- Lower power per TB consumption from higher memory density
- > 1,000,000 IOPS in a single array
The new FMDs can also be used with HDT (dynamic tiering) to cater for mixed sub-LUN workloads and of course Hitachi’s upgraded microcode is already optimised to work with flash devices.
The Architect’s View
Solid state storage continues to evolve. NAND flash is fast and has its foibles but this can be overcome with dedicated NAND modules. Today, only four vendors have moved to dedicated solid-state components while the others continue to use commodity SSDs. At scale, performance and availability, when viewed in terms of consistency become much more important. Many vendors today are producing high performance devices, but how well will they scale going forward and how resilient will they be? As the market matures, these differences will be the dividing line between survival and failure.
Disclaimer: I recently attended the Hitachi Bloggers’ and Influencers’ Days 2012. My flights and accommodation were covered by Hitachi during the trip, however there is no requirement for me to blog about any of the content presented and I am not compensated in any way for my time when attending the event. Some materials presented were discussed under NDA and don’t form part of my blog posts, but could influence future discussions.
- Optimising Storage Architectures for SSD
- Hitachi Accelerated Flash Storage Ignites Flash From Enlightenment to Productivity
Comments are always welcome; please indicate if you work for a vendor as it’s only fair. If you have any related links of interest, please feel free to add them as a comment for consideration.
SoftLayer operates a global cloud infrastructure platform built for Internet scale. With a global footprint of data centers and network points of presence, SoftLayer provides infrastructure as a service to leading-edge customers ranging from Web startups to global enterprises. SoftLayer's modular architecture, full-featured API, and sophisticated automation provide unparalleled performance and control. Its flexible unified platform seamlessly spans physical and virtual devices linked via a world...
May. 27, 2016 03:30 PM EDT Reads: 2,168
SYS-CON Events announced today that ContentMX, the marketing technology and services company with a singular mission to increase engagement and drive more conversations for enterprise, channel and SMB technology marketers, has been named “Sponsor & Exhibitor Lounge Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York City, New York. “CloudExpo is a great opportunity to start a conversation with new prospects, but what happens after the...
May. 27, 2016 03:30 PM EDT Reads: 1,090
Companies can harness IoT and predictive analytics to sustain business continuity; predict and manage site performance during emergencies; minimize expensive reactive maintenance; and forecast equipment and maintenance budgets and expenditures. Providing cost-effective, uninterrupted service is challenging, particularly for organizations with geographically dispersed operations.
May. 27, 2016 02:00 PM EDT Reads: 1,988
SYS-CON Events announced today that BMC Software has been named "Siver Sponsor" of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2015 at the Javits Center in New York, New York. BMC is a global leader in innovative software solutions that help businesses transform into digital enterprises for the ultimate competitive advantage. BMC Digital Enterprise Management is a set of innovative IT solutions designed to make digital business fast, seamless, and optimized from mainframe to mo...
May. 27, 2016 01:45 PM EDT Reads: 2,156
The IoT is changing the way enterprises conduct business. In his session at @ThingsExpo, Eric Hoffman, Vice President at EastBanc Technologies, discuss how businesses can gain an edge over competitors by empowering consumers to take control through IoT. We'll cite examples such as a Washington, D.C.-based sports club that leveraged IoT and the cloud to develop a comprehensive booking system. He'll also highlight how IoT can revitalize and restore outdated business models, making them profitable...
May. 27, 2016 12:30 PM EDT Reads: 2,820
IoT generates lots of temporal data. But how do you unlock its value? How do you coordinate the diverse moving parts that must come together when developing your IoT product? What are the key challenges addressed by Data as a Service? How does cloud computing underlie and connect the notions of Digital and DevOps What is the impact of the API economy? What is the business imperative for Cognitive Computing? Get all these questions and hundreds more like them answered at the 18th Cloud Expo...
May. 27, 2016 12:00 PM EDT Reads: 2,219
SYS-CON Events announced today that EastBanc Technologies will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. EastBanc Technologies has been working at the frontier of technology since 1999. Today, the firm provides full-lifecycle software development delivering flexible technology solutions that seamlessly integrate with existing systems – whether on premise or cloud. EastBanc Technologies partners with p...
May. 27, 2016 10:30 AM EDT Reads: 2,224
SYS-CON Events announced today Object Management Group® has been named “Media Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
May. 27, 2016 10:00 AM EDT Reads: 2,400
SYS-CON Events announced today that Commvault, a global leader in enterprise data protection and information management, has been named “Bronze Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Commvault is a leading provider of data protection and information management...
May. 27, 2016 10:00 AM EDT Reads: 3,110
In his session at 18th Cloud Expo, Bruce Swann, Senior Product Marketing Manager at Adobe, will discuss how the Adobe Marketing Cloud can help marketers embrace opportunities for personalized, relevant and real-time customer engagement across offline (direct mail, point of sale, call center) and digital (email, website, SMS, mobile apps, social networks, connected objects). Bruce Swann has more than 15 years of experience working with digital marketing disciplines like web analytics, social med...
May. 27, 2016 10:00 AM EDT Reads: 1,298
SYS-CON Events announced today that Tintri Inc., a leading producer of VM-aware storage (VAS) for virtualization and cloud environments, will exhibit at the 18th International CloudExpo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, New York, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
May. 27, 2016 10:00 AM EDT Reads: 2,334
The IoTs will challenge the status quo of how IT and development organizations operate. Or will it? Certainly the fog layer of IoT requires special insights about data ontology, security and transactional integrity. But the developmental challenges are the same: People, Process and Platform. In his session at @ThingsExpo, Craig Sproule, CEO of Metavine, will demonstrate how to move beyond today's coding paradigm and share the must-have mindsets for removing complexity from the development proc...
May. 27, 2016 09:00 AM EDT Reads: 1,893
What a difference a year makes. Organizations aren’t just talking about IoT possibilities, it is now baked into their core business strategy. With IoT, billions of devices generating data from different companies on different networks around the globe need to interact. From efficiency to better customer insights to completely new business models, IoT will turn traditional business models upside down. In the new customer-centric age, the key to success is delivering critical services and apps wit...
May. 27, 2016 08:45 AM EDT Reads: 1,130
Join us at Cloud Expo | @ThingsExpo 2016 – June 7-9 at the Javits Center in New York City and November 1-3 at the Santa Clara Convention Center in Santa Clara, CA – and deliver your unique message in a way that is striking and unforgettable by taking advantage of SYS-CON's unmatched high-impact, result-driven event / media packages.
May. 27, 2016 08:00 AM EDT Reads: 2,371
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, will provide an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life ...
May. 27, 2016 07:45 AM EDT Reads: 1,932
As cloud and storage projections continue to rise, the number of organizations moving to the cloud is escalating and it is clear cloud storage is here to stay. However, is it secure? Data is the lifeblood for government entities, countries, cloud service providers and enterprises alike and losing or exposing that data can have disastrous results. There are new concepts for data storage on the horizon that will deliver secure solutions for storing and moving sensitive data around the world. ...
May. 27, 2016 07:00 AM EDT Reads: 1,280
SYS-CON Events announced today that MobiDev will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. MobiDev is a software company that develops and delivers turn-key mobile apps, websites, web services, and complex software systems for startups and enterprises. Since 2009 it has grown from a small group of passionate engineers and business managers to a full-scale mobile software company with over 200 develope...
May. 27, 2016 06:15 AM EDT Reads: 2,554
WebRTC is bringing significant change to the communications landscape that will bridge the worlds of web and telephony, making the Internet the new standard for communications. Cloud9 took the road less traveled and used WebRTC to create a downloadable enterprise-grade communications platform that is changing the communication dynamic in the financial sector. In his session at @ThingsExpo, Leo Papadopoulos, CTO of Cloud9, will discuss the importance of WebRTC and how it enables companies to fo...
May. 27, 2016 05:15 AM EDT Reads: 2,496
SYS-CON Events announced today that MangoApps will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. MangoApps provides modern company intranets and team collaboration software, allowing workers to stay connected and productive from anywhere in the world and from any device. For more information, please visit https://www.mangoapps.com/.
May. 27, 2016 05:00 AM EDT Reads: 738
SYS-CON Events announced today TechTarget has been named “Media Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. TechTarget is the Web’s leading destination for serious technology buyers researching and making enterprise technology decisions. Its extensive global networ...
May. 27, 2016 04:45 AM EDT Reads: 3,148