Click here to close now.




















Welcome!

Java IoT Authors: Carmen Gonzalez, Continuum Blog, Kaazing Blog, Bob Gourley, David H Deans

Related Topics: IoT User Interface, Java IoT, Industrial IoT, Microservices Expo, PowerBuilder, Containers Expo Blog

IoT User Interface: Blog Post

Where Is My Disk Space?

An HTML 5 File System Visualizer

by Nick Mueller, Zetta.net

Hello new users! The file system visualizer can be found at wheresmydiskspace.com - continue reading to learn more about the development of the tool and the visualization options.

Before buying more storage space it's a good idea to make sure your existing space isn't filled with redundant or old data - or hundreds of downloaded cat videos.

Disk capacity is increasing and while prices continue to drop, those savings are offset by demands for new capacity to store more and larger files. Not only does this mean more primary disk space, but 2x that amount for backups.

Zetta co-founder Lou Montulli may have the answer to this problem. Recently Lou combined his experience with browsers and storage in creating an open-source tool - a File System Visualizer (www.wheresmydiskspace.com) - for analyzing storage usage.

Lou was a founding engineer at Netscape in 1994 when he helped create the first commercial web browser Netscape Navigator. Over the years he's been responsible for the development of many browser related innovations, and co-founded Zetta.net in 2008 - where he continues to serve as VP of Engineering and Chief Scientist.

"The tool was conceived as a method for visualizing multiple aspects of any large file set: an existing file system, a backup or an archive," he says. "This can be a great tool to use if you find yourself running low on disk space and need to find files to delete to free up space."

The tool makes heavy use of the Data-Driven Documents JavaScript library together with jQuery, Dojo, PrettyPhoto, JavaScript and Scalable Vector Graphics. Sponsored by Zetta, all the source code for the File System Visualizer is available and a BSD license allows anyone to use it, commercially and non-commercially, free of charge.

"Part of the challenge and opportunity of this tool was writing it in JavaScript and using HTML as the user interface," Lou says. "I was part of the team who wrote the very first web browsers, so I was personally motivated to design a tool that takes advantage of some of the great new technologies coming out of HTML5, Mozilla.org and the broader web community."

Getting Started
The File System Visualizer is free to use and doesn't require installing any software. You just need a web browser that supports SVG and has a fast JavaScript engine. Go to www.wheresmydiskspace.com. The home page has a few video demonstration of the product that you can view before running the software.

Or you can:

  1. Click the link at the top of the page to take you directly to the visualizer.
  2. There you have three options: you can look at some sample data sets, use a Java applet to collect the data from your local machine and create a manifest file detailing what is in the file system, or you can load a manifest file created in a previous scan.
  3. If you choose to do a new scan, and there are a large number of folders, the software will prompt you to save the manifest to your disk rather than keeping it in the browser.

Test Setup
We recently had the File System Visualizer tested on a Windows 7 desktop with a third generation Intel Core i7 processor and 16 GB RAM. The scan took approximately 5 minutes. When completed, a message came up that there were 52,993 folders.

The software can analyze a local disk, or an administrator can run it remotely on any mountable drive. At this point it runs on Windows (32-bit and 64-bit) and OSX.

Visualizing Your Data
After running the scan, the software then presents seven different views of the data. The views are illustrated at the top of the page and you can click on any of the images to access that view of the data.

Summary Page - This showed that the test computer had 353.1 GB of data in 52,993 folders containing 364,931 items, with an average file size of 967.7 KB.

Visual Tree - This gives a hierarchical tree visualization of the data. On the left is a pull-down box where you can select to view the data by size, by type or by date. There is also a slider where you can select the tree display depth from one to seven levels.

Screenshot of the Tree View

Viewing by size shows a hierarchical view of the file system and the amount of data in each folder with up to seven levels of depth. To look at just the contents of a single folder, rather than the entire file system at once, just click on the dot next to that folder.

Viewing by type at the first level divided the data into known types and uncategorized. Going to the second depth level divided the uncategorized by their file extension and the categorized into groups such as disk images, games, database, software development, fonts, plugins, office types, settings, executables, media, backup and system. For most of those categories, going to the next level would give the file extensions, but some categories (media, office types and encodings) would further subdivide before getting to their final level.

Viewing by date, the first level divides the data into "1 year and older" and "within 1 year" and shows the GB of data in each category. Taking it to the second level splits the "within 1 year" branch into five levels and the "1 year and older" into each of the years for which you have data. There is no third level available.

Hierarchical List - This view presents the data in list rather than tree format. To get to deeper levels, click the + sign next to any of the categories. In addition to the file names, there are columns for Size in Directory, Total Size and % with children. When you click on the headers for the columns, up and down arrows appear, making it look like the data is sortable by those columns, but it isn't.

Flattened List - This is a sortable, non-hierarchical list of the folders. When viewing by Size, in addition to File Name, there are seven other sortable columns of data in each folder, including Size and Number of Items. The Type and Date views are similarly sortable. In none of these views can you look at a subtree, only at the entire file system. To view a subtree, go to one of the other views and narrow it down to the subtree and view type you want, and then click on the Flattened List visualization.

Your hard drive in "sun burst" view.

Sunburst - A type of pie chart, with rings showing each of the levels of depth. The chart can display each slice as an even size, or can adjust the sizes by the file count or amount of data in the slice. Clicking on any of the slices will move that folder or data point into the center circle, with the rings showing the subfolders or subcategories of that particular subdirectory.

Tree Map - A box type view of the data. As with the Sunburst, the boxes can be sized equally, or sized by data size or number of files. Clicking on any of the boxes will show the details within that subdirectory or data type.

Bubble Chart - This gives two layout options for showing the data: Bubble Chart or Circle Pack. The Bubble Chart shows bubbles for all the items in that category sized by the amount of data in that folder or file type. The Circle Pack presents a hierarchical view of the bubbles. In either view, clicking on a bubble or circle will give the bubbles showing the subcategories of that item.

Conclusion
The File System Visualizer is a quick and easy way to gain understanding of what's on your file system. It's intuitive to use and within minutes, you can start locating what is taking up disk space. Then you can delete or archive anything that is no longer needed, or establish policies to prevent wasted space. Then, if additional storage space is still needed, you can give management a clear visual presentation of how storage is being used in your environment. You can start visualizing your hard drive right now.

Nick is Zetta's Corporate Reporter, and has been writing and telling stories about technology with blogs, social media, and content marketing since the days when the BBS reigned.

More Stories By Derek Kol

Derek Kol is a technology specialist focused on SMB and enterprise IT innovations.

@ThingsExpo Stories
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo in Silicon Valley. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The Internet of Things (IoT) is the most profound change in personal an...
17th Cloud Expo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterprises are using some form of XaaS – software, platform, and infrastructure as a service.
In his session at @ThingsExpo, Lee Williams, a producer of the first smartphones and tablets, will talk about how he is now applying his experience in mobile technology to the design and development of the next generation of Environmental and Sustainability Services at ETwater. He will explain how M2M controllers work through wirelessly connected remote controls; and specifically delve into a retrofit option that reverse-engineers control codes of existing conventional controller systems so they don't have to be replaced and are instantly converted to become smart, connected devices.
The 17th International Cloud Expo has announced that its Call for Papers is open. 17th International Cloud Expo, to be held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, brings together Cloud Computing, APM, APIs, Microservices, Security, Big Data, Internet of Things, DevOps and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportunity. Submit your speaking proposal today!
The 3rd International WebRTC Summit, to be held Nov. 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA, announces that its Call for Papers is now open. Topics include all aspects of improving IT delivery by eliminating waste through automated business models leveraging cloud technologies. WebRTC Summit is co-located with 15th International Cloud Expo, 6th International Big Data Expo, 3rd International DevOps Summit and 2nd Internet of @ThingsExpo. WebRTC (Web-based Real-Time Communication) is an open source project supported by Google, Mozilla and Opera that aims to enable bro...
SYS-CON Events announced today the Containers & Microservices Bootcamp, being held November 3-4, 2015, in conjunction with 17th Cloud Expo, @ThingsExpo, and @DevOpsSummit at the Santa Clara Convention Center in Santa Clara, CA. This is your chance to get started with the latest technology in the industry. Combined with real-world scenarios and use cases, the Containers and Microservices Bootcamp, led by Janakiram MSV, a Microsoft Regional Director, will include presentations as well as hands-on demos and comprehensive walkthroughs.
The Internet of Things is in the early stages of mainstream deployment but it promises to unlock value and rapidly transform how organizations manage, operationalize, and monetize their assets. IoT is a complex structure of hardware, sensors, applications, analytics and devices that need to be able to communicate geographically and across all functions. Once the data is collected from numerous endpoints, the challenge then becomes converting it into actionable insight.
Contrary to mainstream media attention, the multiple possibilities of how consumer IoT will transform our everyday lives aren’t the only angle of this headline-gaining trend. There’s a huge opportunity for “industrial IoT” and “Smart Cities” to impact the world in the same capacity – especially during critical situations. For example, a community water dam that needs to release water can leverage embedded critical communications logic to alert the appropriate individuals, on the right device, as soon as they are needed to take action.
As more and more data is generated from a variety of connected devices, the need to get insights from this data and predict future behavior and trends is increasingly essential for businesses. Real-time stream processing is needed in a variety of different industries such as Manufacturing, Oil and Gas, Automobile, Finance, Online Retail, Smart Grids, and Healthcare. Azure Stream Analytics is a fully managed distributed stream computation service that provides low latency, scalable processing of streaming data in the cloud with an enterprise grade SLA. It features built-in integration with Azur...
Akana has announced the availability of the new Akana Healthcare Solution. The API-driven solution helps healthcare organizations accelerate their transition to being secure, digitally interoperable businesses. It leverages the Health Level Seven International Fast Healthcare Interoperability Resources (HL7 FHIR) standard to enable broader business use of medical data. Akana developed the Healthcare Solution in response to healthcare businesses that want to increase electronic, multi-device access to health records while reducing operating costs and complying with government regulations.
SYS-CON Events announced today that the "Second Containers & Microservices Expo" will take place November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Containers and microservices have become topics of intense interest throughout the cloud developer and enterprise IT communities.
SYS-CON Events announced today that Pythian, a global IT services company specializing in helping companies leverage disruptive technologies to optimize revenue-generating systems, has been named “Bronze Sponsor” of SYS-CON's 17th Cloud Expo, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Founded in 1997, Pythian is a global IT services company that helps companies compete by adopting disruptive technologies such as cloud, Big Data, advanced analytics, and DevOps to advance innovation and increase agility. Specializing in designing, imple...
WebRTC has had a real tough three or four years, and so have those working with it. Only a few short years ago, the development world were excited about WebRTC and proclaiming how awesome it was. You might have played with the technology a couple of years ago, only to find the extra infrastructure requirements were painful to implement and poorly documented. This probably left a bitter taste in your mouth, especially when things went wrong.
Through WebRTC, audio and video communications are being embedded more easily than ever into applications, helping carriers, enterprises and independent software vendors deliver greater functionality to their end users. With today’s business world increasingly focused on outcomes, users’ growing calls for ease of use, and businesses craving smarter, tighter integration, what’s the next step in delivering a richer, more immersive experience? That richer, more fully integrated experience comes about through a Communications Platform as a Service which allows for messaging, screen sharing, video...
Too often with compelling new technologies market participants become overly enamored with that attractiveness of the technology and neglect underlying business drivers. This tendency, what some call the “newest shiny object syndrome,” is understandable given that virtually all of us are heavily engaged in technology. But it is also mistaken. Without concrete business cases driving its deployment, IoT, like many other technologies before it, will fade into obscurity.
SYS-CON Events announced today that IceWarp will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. IceWarp, the leader of cloud and on-premise messaging, delivers secured email, chat, documents, conferencing and collaboration to today's mobile workforce, all in one unified interface
With the proliferation of connected devices underpinning new Internet of Things systems, Brandon Schulz, Director of Luxoft IoT – Retail, will be looking at the transformation of the retail customer experience in brick and mortar stores in his session at @ThingsExpo. Questions he will address include: Will beacons drop to the wayside like QR codes, or be a proximity-based profit driver? How will the customer experience change in stores of all types when everything can be instrumented and analyzed? As an area of investment, how might a retail company move towards an innovation methodolo...
SYS-CON Events announced today that HPM Networks will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. For 20 years, HPM Networks has been integrating technology solutions that solve complex business challenges. HPM Networks has designed solutions for both SMB and enterprise customers throughout the San Francisco Bay Area.
Consumer IoT applications provide data about the user that just doesn’t exist in traditional PC or mobile web applications. This rich data, or “context,” enables the highly personalized consumer experiences that characterize many consumer IoT apps. This same data is also providing brands with unprecedented insight into how their connected products are being used, while, at the same time, powering highly targeted engagement and marketing opportunities. In his session at @ThingsExpo, Nathan Treloar, President and COO of Bebaio, will explore examples of brands transforming their businesses by t...
SYS-CON Events announced today that Micron Technology, Inc., a global leader in advanced semiconductor systems, will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Micron’s broad portfolio of high-performance memory technologies – including DRAM, NAND and NOR Flash – is the basis for solid state drives, modules, multichip packages and other system solutions. Backed by more than 35 years of technology leadership, Micron's memory solutions enable the world's most innovative computing, consumer,...