Click here to close now.

Welcome!

SDN Journal Authors: AppDynamics Blog, Roger Strukhoff, Liz McMillan, Lori MacVittie, Pat Romanski

Related Topics: SDN Journal, Java, Microservices Journal, Linux, Virtualization, Security

SDN Journal: Blog Post

Converging Your Storage Network Without Fear

The days of completely separate storage network technologies are quickly fading

The days of completely separate storage network technologies are quickly fading. It feels like it’s only a few years ago that Fiber Channel was the way to create large scale storage networks. Big honking storage devices on a separate network, connected to Fiber Channel switches, connected with Fiber Channel adapters into servers. With 10GbE becoming cost effective and matching or outperforming 2, 4 or even 8Gbit Fiber Channel, Fiber Channel over Ethernet was invented, mostly as a mechanism to allow Ethernet based attachments to existing Fiber Channel installations. It’s a bit clumsy, but it works.

A variety of Ethernet and IP based storage mechanisms have gained significant popularity in the past few years. Storage has become denser and cheaper, and advances in file system technology have made it much more convenient to distribute storage and access it as if it was one large system. Most of the customers we find have a mixture of server co-located storage (typically 4-10 TB per system) to mid size storage arrays in the 10s to 100s of TB that are distributed across the network. Whether it’s NAS, iSCSI, ATA over Ethernet or any other Ethernet or IP based storage technology, it is clear that networked storage is where we are going. Don’t get me wrong, FC and FCoE will be around for a long time to come. Billions of dollars have been invested and those dollars will be protected. But even the bellwether FC storage companies provide ethernet and IP based access to their arrays these days.

Interestingly enough though, while many have made or are making the transition to, dare I call it, traditional network technologies for storage transport, many still create separate, parallel ethernet networks for storage. Servers have multiple NICs, with some of them dedicated to the storage network. The reasons for this separation are fairly straightforward. Storage used to be dedicated, it still is, but now on cheap 10GbE. The people that manage the storage still have the same full control, its still a storage network. All of the management, provisioning and tuning tools apply, all that really happened is a change of the medium. But above all, any time I have had a “why don’t you converge your storage and data network” discussion with a customer, it has almost always comes to a fear of running storage traffic and regular data traffic on the same network. It’s a fear of interference, congestion, perhaps a fear of the unknown “what happens to my storage performance when I run the two on the same network?”

The folks at Network Heresy have spent a few articles on the age old network problem of mice and elephant flows. Combining storage and regular data on the same network will amplify this problem. Storage functions like replication and archiving are extremely likely to be elephant flows and can have quite the impact on the rest of the flows. Perhaps that fear is rational?

There are certainly ways to try and engineer your way through this, but they are awfully complicated. I can create a different class of service for storage traffic, queue it differently, give it different drop preferences and use all the other tricks to try and ease the potential for interference. But still, the data traverses the same links and all we have done is made one more important than the other. Which may be perfectly valid for replication and archiving, but not at all for real time access to storage for regular applications.

So what if you could separate your storage and regular data traffic while on the same, single ethernet? What if you could isolate traffic to and from storage to use specific links, while all other traffic would use other links. Give lowest hop count paths to applications and storage that require the lowest latency, give paths with more latency but more available bandwidth to those replication and archiving flows that are not particularly latency sensitive. You can create a single ethernet network, and still separate your storage traffic and regular data traffic. I have seen solutions that propose a virtualized L2 network to separate the two types, but  that only provides logical separation, they still flow across the exact same links, with the potential of interference.

A controller that manages topologies and paths based on end to end visibility and allows you to articulate in fairly abstract terms what you want separated, gives you this option. Having that same controller integrate with the storage management so that this can be fully or partially automated, even better. Think about it, a single storage and data network where you control how converged or diverged the various data streams are is very powerful. We have demonstrated this in the past and there are real solutions based on these capabilities.

We are collectively making the step into network based storage. We should also make the step to run this effectively with maximum performance and minimal interference on a single network. It really can be pretty simple…

[Today's fun fact: Sony was the last major company to stop producing 3.5 inch floppy disks in 2011. In 2009 they still sold 12 million of them. Oh I miss my Commodore VIC-20 with its tape drive.]

The post Converging your storage network without fear appeared first on Plexxi.

Read the original blog entry...

More Stories By Marten Terpstra

Marten Terpstra is a Product Management Director at Plexxi Inc. Marten has extensive knowledge of the architecture, design, deployment and management of enterprise and carrier networks.

@CloudExpo Stories
BroadSoft on Tuesday announced that it is a recipient of the 2014 Frost & Sullivan Market Leadership Award in the Hosted/Cloud Internet Protocol (IP) Telephony market for Latin America. According to Frost & Sullivan market research, the Latin America (LATAM) hosted/cloud Internet Protocol (IP) telephony market, including integrated unified communications and collaboration (UC&C) applications, is currently experiencing a rapid growth trajectory and is expected to exhibit a tenfold rise in annual...
SYS-CON Events announced today that Akana, formerly SOA Software, has been named “Bronze Sponsor” of SYS-CON's 16th International Cloud Expo® New York, which will take place June 9-11, 2015, at the Javits Center in New York City, NY. Akana’s comprehensive suite of API Management, API Security, Integrated SOA Governance, and Cloud Integration solutions helps businesses accelerate digital transformation by securely extending their reach across multiple channels – mobile, cloud and Internet of Thi...
SYS-CON Events announced today that CommVault has been named “Bronze Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY, and the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. A singular vision – a belief in a better way to address current and future data management needs – guides CommVault in the development of Singular In...
SYS-CON Events announced today that SafeLogic has been named “Bag Sponsor” of SYS-CON's 16th International Cloud Expo® New York, which will take place June 9-11, 2015, at the Javits Center in New York City, NY. SafeLogic provides security products for applications in mobile and server/appliance environments. SafeLogic’s flagship product CryptoComply is a FIPS 140-2 validated cryptographic engine designed to secure data on servers, workstations, appliances, mobile devices, and in the Cloud....
SYS-CON Events announced today that FierceDevOps will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. FierceDevOps keeps software developers and IT operations personnel updated on the latest news and trends around the rapidly evolving role of the traditional IT worker.
SYS-CON Events announced today that StorPool Storage will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. StorPool is distributed storage software that allows service providers, enterprises and other cloud builders to run data storage on standard x86 servers, instead of using expensive and inefficient storage arrays (SAN).
SOASTA, the leader in performance analytics, today reported record growth of the CloudTest community, exceeding 30,000 registered users of the CloudTest platform in Q1 2015. SOASTA also announced widespread adoption of its Web and mobile testing solutions, with more than 1,600 customers completing more than 285,000 tests using CloudTest during the quarter. This rapid growth shows that DevOps-driven digital businesses are embracing a more continuous approach to testing, and CloudTest is meeting t...
SYS-CON Events announced today that QTS Realty Trust, one of the nation’s largest and fastest-growing providers of data center facilities and cloud services and a leader in security and compliance, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. QTS Realty Trust, Inc. (NYSE: QTS) is a leading national provider of data center solutions and fully managed services, and a leader in security and compliance...
ProfitBricks, the provider of painless cloud infrastructure for IaaS, today announced the release of a Node.js SDK written against its recently launched REST API. This new JavaScript based library provides coverage for all existing ProfitBricks REST API functions. With additional libraries set to release this month, ProfitBricks continues to prove its dedication to the DevOps community and commitment to making cloud migrations and cloud management painless. Node.js is an open source, cross-pl...
Today, IT is not just a cost center. IT is an enabler and driver of business. With the emergence of the hybrid cloud paradigm, IT now has increasingly more capabilities to create new strategic opportunities for a business. Hybrid cloud allows an organization to utilize multi-tenant public clouds, dedicated private clouds, bare metal hosting, and the associated support and services for the right use cases through an on-demand, XaaS model. This model of IT creates tremendous opportunities for busi...
GENBAND has announced that SageNet is leveraging the Nuvia platform to deliver Unified Communications as a Service (UCaaS) to its large base of retail and enterprise customers. Nuvia’s cloud-based solution provides SageNet’s customers with a full suite of business communications and collaboration tools. Two large national SageNet retail customers have recently signed up to deploy the Nuvia platform and the company will continue to sell the service to new and existing customers. Nuvia’s capabili...
SYS-CON Events announced today that IndependenceIT, a leading software provider of simplified IT management solutions for workspaces, applications and desktops-as-a-service, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. IndependenceIT's Cloud Workspace® Suite combines application, end-user and infrastructure management into a seamless, easy-to-manage platform, with a unified management interface an...
SYS-CON Events announced today that that Innodisk, the service-driven provider of industrial embedded flash and DRAM storage products and technologies, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Innodisk is a service-driven provider of industrial embedded flash and DRAM storage products and technologies. With satisfied customers across the embedded, aerospace and defense, cloud storage markets an...
Sonus Networks introduced the Sonus WebRTC Services Solution, a virtualized Web Real-Time Communications (WebRTC) offer, purpose-built for the Cloud. The WebRTC Services Solution provides signaling from WebRTC-to-WebRTC applications and interworking from WebRTC-to-Session Initiation Protocol (SIP), delivering advanced real-time communications capabilities on mobile applications and on websites, which are accessible via a browser.
SYS-CON Events announced today that WSM International (WSM), the world’s leading cloud and server migration services provider, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. WSM is a solutions integrator with a core focus on cloud and server migration, transformation and DevOps services.
SYS-CON Events announced today that Site24x7, the cloud infrastructure monitoring service, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Site24x7 is a cloud infrastructure monitoring service that helps monitor the uptime and performance of websites, online applications, servers, mobile websites and custom APIs. The monitoring is done from 50+ locations across the world and from various wireless carr...
SYS-CON Events announced today that Intelligent Systems Services will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Established in 1994, Intelligent Systems Services Inc. is located near Washington, DC, with representatives and partners nationwide. ISS’s well-established track record is based on the continuous pursuit of excellence in designing, implementing and supporting nationwide clients’ mission-cri...
SYS-CON Events announced today that B2Cloud, a provider of enterprise resource planning software, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. B2cloud develops the software you need. They have the ideal tools to help you work with your clients. B2Cloud’s main solutions include AGIS – ERP, CLOHC, AGIS – Invoice, and IZUM
SYS-CON Events announced today that Tufin, the market-leading provider of Security Policy Orchestration Solutions, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. As the market leader of Security Policy Orchestration, Tufin automates and accelerates network configuration changes while maintaining security and compliance. Tufin's award-winning Orchestration Suite™ gives IT organizations the power and a...
SYS-CON Events announced today that Cloudian, Inc., the leading provider of hybrid cloud storage solutions, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Cloudian, Inc., is a Foster City, California - based software company specializing in cloud storage software. The main product is Cloudian, an Amazon S3-compliant cloud object storage platform, the bedrock of cloud computing systems, that enables c...