Welcome!

Microservices Expo Authors: AppNeta Blog, XebiaLabs Blog, Elizabeth White, Kong Yang, Yeshim Deniz

Related Topics: Containers Expo Blog, Java IoT, Industrial IoT, Microservices Expo, Open Source Cloud, @CloudExpo

Containers Expo Blog: Blog Post

The Evolution of Solid State Arrays

Solid state storage continues to evolve

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.

Related Links

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.

Read the original blog entry...

@MicroservicesExpo Stories
This recent research on cloud computing from the Register delves a little deeper than many of the "We're all adopting cloud!" surveys we've seen. They found that meaningful cloud adoption and the idea of the cloud-first enterprise are still not reality for many businesses. The Register's stats also show a more gradual cloud deployment trend over the past five years, not any sort of explosion. One important takeaway is that coherence across internal and external clouds is essential for IT right n...
Back in February of 2017, Andrew Clay Schafer of Pivotal tweeted the following: “seriously tho, the whole software industry is stuck on deployment when we desperately need architecture and telemetry.” Intrigue in a 140 characters. For me, I hear Andrew saying, “we’re jumping to step 5 before we’ve successfully completed steps 1-4.”
Enterprise architects are increasingly adopting multi-cloud strategies as they seek to utilize existing data center assets, leverage the advantages of cloud computing and avoid cloud vendor lock-in. This requires a globally aware traffic management strategy that can monitor infrastructure health across data centers and end-user experience globally, while responding to control changes and system specification at the speed of today’s DevOps teams. In his session at 20th Cloud Expo, Josh Gray, Chie...
In his session at 20th Cloud Expo, Scott Davis, CTO of Embotics, will discuss how automation can provide the dynamic management required to cost-effectively deliver microservices and container solutions at scale. He will discuss how flexible automation is the key to effectively bridging and seamlessly coordinating both IT and developer needs for component orchestration across disparate clouds – an increasingly important requirement at today’s multi-cloud enterprise.
To more closely examine the variety of ways in which IT departments around the world are integrating cloud services, and the effect hybrid IT has had on their organizations and IT job roles, SolarWinds recently released the SolarWinds IT Trends Report 2017: Portrait of a Hybrid Organization. This annual study consists of survey-based research that explores significant trends, developments, and movements related to and directly affecting IT and IT professionals.
Developers want to create better apps faster. Static clouds are giving way to scalable systems, with dynamic resource allocation and application monitoring. You won't hear that chant from users on any picket line, but helping developers to create better apps faster is the mission of Lee Atchison, principal cloud architect and advocate at New Relic Inc., based in San Francisco. His singular job is to understand and drive the industry in the areas of cloud architecture, microservices, scalability ...
Keeping pace with advancements in software delivery processes and tooling is taxing even for the most proficient organizations. Point tools, platforms, open source and the increasing adoption of private and public cloud services requires strong engineering rigor – all in the face of developer demands to use the tools of choice. As Agile has settled in as a mainstream practice, now DevOps has emerged as the next wave to improve software delivery speed and output. To make DevOps work, organization...
In his general session at 19th Cloud Expo, Manish Dixit, VP of Product and Engineering at Dice, discussed how Dice leverages data insights and tools to help both tech professionals and recruiters better understand how skills relate to each other and which skills are in high demand using interactive visualizations and salary indicator tools to maximize earning potential. Manish Dixit is VP of Product and Engineering at Dice. As the leader of the Product, Engineering and Data Sciences team at D...
Is your application too difficult to manage? Do changes take dozens of developers hundreds of hours to execute, and frequently result in downtime across all your site’s functions? It sounds like you have a monolith! A monolith is one of the three main software architectures that define most applications. Whether you’ve intentionally set out to create a monolith or not, it’s worth at least weighing the pros and cons of the different architectural approaches and deciding which one makes the most s...
Cloud Expo, Inc. has announced today that Aruna Ravichandran, vice president of DevOps Product and Solutions Marketing at CA Technologies, has been named co-conference chair of DevOps at Cloud Expo 2017. The @DevOpsSummit at Cloud Expo New York will take place on June 6-8, 2017, at the Javits Center in New York City, New York, and @DevOpsSummit at Cloud Expo Silicon Valley will take place Oct. 31-Nov. 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
In large enterprises, environment provisioning and server provisioning account for a significant portion of the operations team's time. This often leaves users frustrated while they wait for these services. For instance, server provisioning can take several days and sometimes even weeks. At the same time, digital transformation means the need for server and environment provisioning is constantly growing. Organizations are adopting agile methodologies and software teams are increasing the speed ...
Software as a service (SaaS), one of the earliest and most successful cloud services, has reached mainstream status. According to Cisco, by 2019 more than four-fifths (83 percent) of all data center traffic will be based in the cloud, up from 65 percent today. The majority of this traffic will be applications. Businesses of all sizes are adopting a variety of SaaS-based services – everything from collaboration tools to mission-critical commerce-oriented applications. The rise in SaaS usage has m...
The proper isolation of resources is essential for multi-tenant environments. The traditional approach to isolate resources is, however, rather heavyweight. In his session at 18th Cloud Expo, Igor Drobiazko, co-founder of elastic.io, drew upon his own experience with operating a Docker container-based infrastructure on a large scale and present a lightweight solution for resource isolation using microservices. He also discussed the implementation of microservices in data and application integrat...
We'd all like to fulfill that "find a job you love and you'll never work a day in your life" cliché. But in reality, every job (even if it's our dream job) comes with its downsides. For you, the constant fight against shadow IT might get on your last nerves. For your developer coworkers, infrastructure management is the roadblock that stands in the way of focusing on coding. As you watch more and more applications and processes move to the cloud, technology is coming to developers' rescue-most r...
2016 has been an amazing year for Docker and the container industry. We had 3 major releases of Docker engine this year , and tremendous increase in usage. The community has been following along and contributing amazing Docker resources to help you learn and get hands-on experience. Here’s some of the top read and viewed content for the year. Of course releases are always really popular, particularly when they fit requests we had from the community.
Today we can collect lots and lots of performance data. We build beautiful dashboards and even have fancy query languages to access and transform the data. Still performance data is a secret language only a couple of people understand. The more business becomes digital the more stakeholders are interested in this data including how it relates to business. Some of these people have never used a monitoring tool before. They have a question on their mind like “How is my application doing” but no id...
Even for the most seasoned IT pros, the cloud is complicated. It can be difficult just to wrap your head around the many terms and acronyms that make up the cloud dictionary-not to mention actually mastering the technology. Unfortunately, complicated cloud terms are often combined to the point that their meanings are lost in a sea of conflicting opinions. Two terms that are used interchangeably (but shouldn't be) are hybrid cloud and multicloud. If you want to be the cloud expert your company ne...
SYS-CON Events announced today that CollabNet, a global leader in enterprise software development, release automation and DevOps solutions, will be a Bronze Sponsor of SYS-CON's 20th International Cloud Expo®, taking place from June 6-8, 2017, at the Javits Center in New York City, NY. CollabNet offers a broad range of solutions with the mission of helping modern organizations deliver quality software at speed. The company’s latest innovation, the DevOps Lifecycle Manager (DLM), supports Value S...
The human body is the most complex machine ever created! With a complex network of interconnected organs, millions of cells and the most advanced processor, human body is the most automated system in this planet. In this article, we will draw comparisons between working of a human body to that of a datacenter. We will learn how self-defense and self-healing capabilities of our human body is similar to firewalls and intelligent monitoring capabilities in our datacenters. We will draw parallels b...
Cloud adoption is often driven by a desire to increase efficiency, boost agility and save money. All too often, however, the reality involves unpredictable cost spikes and lack of oversight due to resource limitations. In his session at 20th Cloud Expo, Joe Kinsella, CTO and Founder of CloudHealth Technologies, will tackle the question: “How do you build a fully optimized cloud?” He will examine: Why TCO is critical to achieving cloud success – and why attendees should be thinking holisticall...