cross pond high tech
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Facebook’s cold storage system : the full-stack approach to efficiency

Facebook’s cold storage system : the full-stack approach to efficiency | cross pond high tech | Scoop.it

Two billion photos are shared daily on Facebook services. Many of these photos are important memories for the people on Facebook and it's our challenge to ensure we can preserve those memories as long as people want us to in a way that's as sustainable and efficient as possible. As the number of photos continued to grow each month, we saw an opportunity to achieve significant efficiencies in how we store and serve this content and decided to run with it. The goal was to make sure your #tbt photos from years past were just as accessible as the latest popular cat meme but took up less storage space and used less power. The older, and thus less popular, photos could be stored with a lower replication factor but only if we were able to keep an additional, highly durable copy somewhere else.

 

Instead of trying to utilize an existing solution — like massive tape libraries — to fit our use case, we challenged ourselves to revisit the entire stack top to bottom. We're lucky at Facebook — we're empowered to rethink existing systems and create new solutions to technological problems. With the freedom to build an end-to-end system entirely optimized for us, we decided to reimagine the conventional data center building itself, as well as the hardware and software within it. The result was a new storage-based data center built literally from the ground up, with servers that power on as needed, managed by intelligent software that constantly verifies and rebalances data to optimize durability. Two of these cold storage facilities have opened within the past year, as part of our data centers in Prineville, Oregon, and Forest City, North Carolina.

Philippe J DEWOST's insight:

Facebook adds 2 Bn pics every day : their full-stack approach on cold storage operating at 25% the power of conventional storage servers  is both fun and fascinating to read.

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CloudGOO’s New App Turns All Your Cloud Storage Accounts Into One Big, Combined Drive | TechCrunch

CloudGOO’s New App Turns All Your Cloud Storage Accounts Into One Big, Combined Drive | TechCrunch | cross pond high tech | Scoop.it

CloudGOO, a newly launched Android application with something of a silly name, offers a way for you to smush together all your cloud-based file storage accounts to form one big cloud drive in the sky. That is, the app aggregates your cloud drive accounts into one mobile interface, then uses that space as if it were one drive for things like automatic uploads of photos, videos, music, and documents.

 

The new service was launched just days ago by Berlin-based developer Jared Preston, who previously spent a few years in Seattle working for Microsoft on the Windows Live platform, followed by some time at Deutsche Telekom.

 

He explains that unlike other platforms, such as Jolicloud for example, which attempted to aggregate a user’s web services under one roof, the idea with CloudGOO is not to have you navigate between your drives or media spaces using the app. Instead, he says, “you simply access and use your stuff, no matter where it is stored.”

“Theoretically, you could just hook up as many Google Drives, Dropbox, etc., as you wanted, to create a total space available for you to use. CloudGOO can then be set to ‘automatic upload’ and would just utilize the space available,” says Preston. “You would not have to worry about managing the space, just using it.”

Philippe J DEWOST's insight:

I have played with Jolicloud without understanding how to use it and despite enjoying its design and simplicity ; I haven't played with CloudGOO yet but perfectly see the value of such an operational cloud storage abstraction layer. Congrats Jared !

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"Other" content slowly eating up a significant chunk of iDevices available storage on iTunes

"Other" content slowly eating up a significant chunk of iDevices available storage on iTunes | cross pond high tech | Scoop.it

Several iDevices users have reported a steady yet significant inflation of device storage memory taken by "Other" content than Music, Photos, Videos, Apps, Books...

 

Nobody seems to have a clue of what this "other" space is used for, nor how to bring it down to zero. Documented tricks like shutting down the iPhone, or performing a Save / Restore from iTunes won't let it go, at least on some iDevices including my iPhone and iPad.

 

More intriguing, such space seems to be growing at each iTunes sync. On the above image you'll see a situation where "Other" now eats almost 1/3 rd of my total available space.

 

What about you ?

Philippe J DEWOST's insight:

Please check your iTunes config and let me know how much "other" space is taken on your iDevices

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The imminent role of ARM as a storage platform?

The imminent role of ARM as a storage platform? | cross pond high tech | Scoop.it

It seems not too long ago that the storage industry was fragmented in terms of the "compute" layer in their storage systems. PowerPC, MIPS, Sparc and other platforms dominated the "pie chart" with x86 occupying a small share. Then something happened - all suppliers moved to x86 as a premise for commoditization of the storage platform. With vendors like Dell now testing low-powered ARM based servers and ARM releasing a 64-bit architecture, the question is how long before ARM becomes the platform of choice for storage vendors?

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Petites réflexions sur le Big Data

Petites réflexions sur le Big Data | cross pond high tech | Scoop.it

Face à une profusion d'informations de plus en plus hétérogènes et de moins en moins structurées, un des enjeux majeurs pour l'ensemble des acteurs économiques dans les dix ans à venir sera leur capacité à exploiter, analyser et transformer en valeur ces avalanches de données produites, et ce, si possible, en temps réel.

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Box.net delayed IPO in context : The "Great Cloud Crash" as Business Insider describes it

Box.net delayed IPO in context : The "Great Cloud Crash" as Business Insider describes it | cross pond high tech | Scoop.it

This chart from Bessemer Venture Partners shows how far a basket of "cloud" stocks has fallen from their peak. The cloud index tracks 37 publicly traded companies. 

The cloud companies are still outperforming the broader market since 2012, but the trend doesn't look great.

Philippe J DEWOST's insight:

Fog is clearing yet outlook is shaky

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Graphene Supercapacitors: The End Of Batteries?

Graphene Supercapacitors: The End Of Batteries? | cross pond high tech | Scoop.it

Richard Kaner and his graduate student Maher El-Kady have been trumpeting graphene micro-supercapacitors that would combine the very fast charge and discharging capabilities of supercapacitors – hundreds of times faster than batteries – with the high energy density of batteries.

 

Now the researches say they have demonstrated a scalable fabrication process that could make their supercapacitors cheap to produce while expanding the possibilities for their use.


The UCLA researchers say they’ve been able to produce more than 100 micro-supercapacitors on a single disc in less than 30 minutes, using inexpensive materials. (image via UCLA)

“We are now looking for industry partners to help us mass-produce our graphene micro-supercapacitors,” Kaner said in a statement.

Philippe J DEWOST's insight:

The process is almost as fascinating as the potential outcome ...

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Larry's comment, April 8, 2013 4:35 AM
¿ Availability? 2 years from now? First devices ?
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Gmail Threatens Dropbox By Allowing Users To Send Files Up To 10GB

Gmail Threatens Dropbox By Allowing Users To Send Files Up To 10GB | cross pond high tech | Scoop.it
Remember when you couldn't send video or audio files because of attachment size limits? That's history.

If you're a Gmail user, there's good news: You can now send files as large as 10 gigabytes.

If you're a Dropbox investor or employee, though, that's bad news.
The Web-based email service now integrates with Google's Drive storage system, according to ReadWrite's Jon Mitchell.

Users don't have to do anything to take advantage of this new feature. When you attach a file, Gmail will double-check that your recipients have permission to view the files in Google Drive.
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Lexar first with 256GB SDXC Card

Lexar first with 256GB SDXC Card | cross pond high tech | Scoop.it

Lexar Media says its industry-first 256GB SDXC UHS-I memory card provides the largest capacity for capturing, storing, and transferring high-quality images, as well as extended lengths of 1080p HD and 3D video content.


The UHS-I technology enables 60 megabytes per second minimum guaranteed sustained read transfer speed.

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