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Discussion on the state of cloud computing and open source software that helps build, manage, and deliver everything-as-a-service.

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Sheng is the CEO and founder of, where he drives the vision and overall direction for the company as it transforms the way business can harness the power of their own cloud. Sheng is a recognized expert in virtualization technologies as the lead developer on the original Java Virtual Machine team at Sun Microsystems. Sheng was co-founder and CTO of Teros (acquired by Citrix), a leader in perimeter and network security solutions for enterprises and service providers. Sheng has also held technology leadership roles at SEVEN Networks and Openwave systems where he developed software products for leading service providers and operators around the globe.

Today Citrix announced that CloudStack would become the cloud platform project in Apache Software Foundation. I’m excited not just because CloudStack will be an incredibly vibrant and successful project by itself, I also believe there is a tremendous amount of synergy between CloudStack and other cloud-related projects in Apache Software Foundation. I look forward to continuing to work with, for example, Apache Libcloud and Deltacloud projects.

I am the most excited, however, about the prospect of integrating with Apache Hadoop project. Known primarily as the technology for Big Data applications, Hadoop has gained wide-spread adoption in the industry. Similar to CloudStack which is inspired by Amazon’s EC2 service, Hadoop is modeled after Google’s MapReduce and Google File System technologies. And just like CloudStack, Hadoop is implemented in Java.

At the lowest level, Hadoop Distributed File System (HDFS) is a distributed and scalable file system. HDFS is designed to run on a large number of hosts and achieves reliability by automatically replicating data across multiple hosts. Hadoop project also includes a MapReduce engine and HBase distributed database (modeled after Google’s BigTable.) MapReduce and HBase run on top of HDFS. Highly reliable and highly efficient, Hadoop technology is being used by some of the largest cloud companies including eBay, Yahoo! and Facebook.

Today, CloudStack users already run Hadoop on CloudStack. They implement a service very similar to Amazon’s Elastic MapReduce (EMR). For cloud service providers, Hadoop represents a significant amount of workload that can be readily moved to the cloud. Enterprise deployments can achieve tremendous savings by leveraging the same CloudStack infrastructure to host Big Data workload. Users also leverage CloudStack’s bare metal provisioning capabilities to build high performance Hadoop clusters.

Working closely with Hadoop development community, we have started to explore other ways to integrate CloudStack and Hadoop. Because of its scalability, reliability, performance, and maturity, HDFS is a great object store solution for IaaS cloud. We have started the development of an S3 API front-end for HDFS. Once that work is complete, the combination of CloudStack and Hadoop will provide features equivalent to Amazon EC2 and S3 services.

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Citrix Acquires

Posted by on in News

Today we announced that had joined forces with Citrix. This is not only a great day for investors, all of us at are also extremely excited to become Citrix employees. has a long history working with Citrix. We have supported various versions of Xen hypervisor since our 1.0 release in Nov 2009. Some of our large customers such as Zynga, KT, Tata, and Go Daddy all deploy Citrix technologies. We learned a lot about Citrix in the process. We firmly believe Citrix is the best positioned to succeed in cloud computing.

1.       Citrix offers cloud providers an impressive set of technologies that complement the CloudStack cloud orchestration software developed by Our customers build clouds using Citrix XenServer, Xen Desktop, and NetScaler VPX/MPX products. With the acquisition of, no other software company has the breadth and depth of technologies in cloud computing.
2.       Customers love Citrix products.  Citrix was born from the idea of unlocking applications from datacenters and employees from the office – creating new ways for people to work. From virtual desktops to online meetings, Citrix products are cloud-based services. It is no coincidence that Citrix emerges as a leader in cloud computing.
3.       Citrix is a great partner. Even a small company like was able to derive significant benefits from our partnership with Citrix. Citrix was always willing to work with us to drive common customer success. It did not matter when it times we appeared to be taking business away from another Citrix product. Citrix would support us if our product met customer’s needs better. This is why Citrix works with multiple hypervisors, multiple systems vendors, and multiple storage and networking technologies. Citrix will be successful in cloud computing because it can work effectively with ecosystems partners.
It has been an amazing 2 years and 10 months to build from a simple idea to a significant force in cloud computing. Our customers, partners, and community member, we could not have done it without you. But our work is not done. By joining forces with Citrix, we can serve you even better. We look forward to continuing to work with you in the coming years.


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Comments turns one today!

Posted by on in News

This month celebrates its first birthday since we came out of stealth mode last year; and we have a lot to be excited about these days.

It’s hard to believe how far we have come. Will, Alex, Shannon, Chiradeep and I started VMops (now back in 2008 and launched our first product in 2010. We were 5 guys who had an idea and we believed that the product we were building could take the complexity and high costs out of deploying cloud services.

Since then, we’ve enabled over 50 large-scale production clouds across all industries ( powers KT Ucloud: 60% cheaper than AWS). We’ve employed close to 70 “cloudies” across the United States, India, and Japan. We continue to innovate, releasing the newest version of our CloudStack platform back in March.  And, critical to our momentum, have added a good handful of partners to our Cloud ecosystem.

Back then cloud computing was still an experiment performed by industry pioneers like Amazon and Rackspace. Companies who were attracted to this notion of cloud computing were mostly service providers who were interested in launching their public clouds as part of their go-to-market strategy. Today, as I talk to our partners, customers, I am seeing more demands not only for private clouds but for public clouds as well.

I cannot think of another paradigm shift that happened as quickly as cloud computing. I cannot think of another market that developed as quickly as cloud computing.What do all these developments mean to our industry? How does respond to these changes? It is no longer rocket science to merely launch and operate a cloud. After all, Amazon EC2 has been in operation for close to 5 years. Rackspace cloud has been running for 3 years. customers have been successfully operating their services for 2 years. The challenge today is not to build or operate a cloud, but to run a successful business on the cloud. is working with early innovators as well as mainstream market makers to build the best cloud infrastructure, and more importantly to develop the necessary higher-level software to make the cloud business asuccess. I’m excited to think where we’ll be in one year from now and to our customers. I would like to take this time to thank our customers, growing open source community and partners who have supported us through the first year.

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The past week marks a significant milestone in our industry. Cloud service provider Rackspace Hosting (RAX) market capitalization exceeded $5B. This represents financial market’s recognition of Rackspace as a leader in cloud computing. At we are...

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Today Rackspace and the Nebula team at NASA announced, an Open Source initiative designed to foster the emergence of technology standards and interoperability in the cloud computing market. It received support from...

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Citrix supports the open source community via developer support and evangeslism. We have a number of developers and evangelists that participate actively in the open source community in Apache Cloudstack, OpenDaylight, Xen Project and XenServer. We also conduct educational activities via the Build A Cloud events held all over the world.