Bitcasa unlimited cloud for each

Someday we stop storing data on hard drives. All information will be in the laquo; oblakeraquo, and will be available to us from any computer connected to the Internet. Music, videos, documents and other files will be downloaded to the hard drive only when they are necessary to us. And such laquo; oblachnoeraquo, the future is not as far away as it seems. The new service called Bitcasa change the way people on the use of services for backup and data synchronization.

Laquo; How? Another service to synchronize data? Raquo; – asks astonished reader. Yes, Bitcasa does something that people have long been used Dropbox, SugarSync, and other similar services, but does so in a different way. Almost all of the services for online backup are designed to keep your important files on a remote server. Bitcasa offered to give up local copies of files and completely transfer all of your data in laquo; oblakoraquo.; At the very least, the data that we used to store external hard drives, – collection of movies, photos, music, e-books. And all this – for only $ 10 a month.

What is unique?

Bitcasa was founded last year by former employees of Mastercard, VeriSign, and Mozy. This means that the creators of the service are familiar with solutions for backing up data online as well as with the safety provisions of storing user files. The idea of ??the service is to give everyone unlimited space for cloud storage. Creators formulated purpose so Bitcasa: laquo; Users can view all your photos, listen to music collections, store all your important files, and each will remain at the same place in order to download the contents of the entire Library of Congress SShAraquo.; Access to data stored on the server is not using the traditional boot and using streaming, which speeds up getting the files.

The first question that arises when one reads about unlimited storage: laquo; How is it possible? raquo;’s all about special proprietary algorithms, data deduplication and compression technologies used in the data that is used the service (now owns twenty Bitcasa patents!). According to the Executive Director of the service, sixty percent of user data are identical and each has a maximum of 25 GB of unique data. Thus, if stored on a remote server only one compressed file instead of thousands of copies of it, you can significantly reduce costs.

Ensure effectiveness of this approach from the very first minutes of the service. If you take the two folders of the same size, in one of the audio files are stored, and the other – family photos, and upload them to Bitcasa, we can see that the folder containing the music loaded much faster. The same thing happens with movies and other content that someone is likely to have uploaded to the server is up to you.


And what about security? Bitcasa encrypts the user side, the data is transmitted to the laquo; oblakoraquo, even in encrypted form. According to the creators, none of the employees can not access the user’s data. If you forget the password to your account, it is possible to reset it, the correct answer to two secret question you chose when registering.


Inquisitive reader will inevitably think: how could encryption on the client side to coexist with data deduplication algorithm? That is, if two users upload Bitcasa same encrypted file, as soon as possible, not having the key to determine what files are the same? The thing is that the service is using convergent encryption, which is patented.

Its essence is this: if two or more encrypted objects are identical, even when using different encryption keys, do not have access to any of the keys in order to determine that the encrypted objects are the same. If two or more identical objects encrypted, but encrypted with a different key, the storage of all such objects is enough space that you want to store one of the identical objects and key to decrypt each. Interestingly, the creators of Bitcasa is not the inventor of convergent encryption, they just used this technology.

So, get access to users’ files employees really can not. But how such a method of encryption is secure? At first glance, it is more vulnerable than usual. Theoretically, a person with access to the original file and the server, which stores information about the other copies may identify users who also have this file. In addition, knowing the partial contents of a file, it is theoretically much easier to get access to the encryption key. The consequence of such an attack can be unauthorized decryption of data.

First impressions of the work

Meanwhile Bitcasa is at the stage of closed testing. Anyone can apply to participate in the testing of the project site. In addition, everyone who has received an application, there are a limited number of invitations to share with friends. During testing service is completely free, and later, we recall, it is planned that it will cost 10 # 36, per month. Perhaps, there will be free plan with some restrictions.

From the beginning

Bitcasa oriented cross-platform. It is now available to clients for Mac and Windows (so far only an alpha version), and in the near future is also expected to release for Linux. There is no doubt that there will be a little later, and mobile applications on different platforms.

Bitcasa provides the ability to upload to the server (or, to use the terminology of the inside, cloudify – laquo; oblakofitsirovatraquo ;) only folders, or entire drives. Download individual files is not supported. It is difficult to say whether this is a limitation of the test version, or is by design (why are sprayed onto I’ve found if you can download the entire hard drive?). To download folder, just drag it into the application window, or select the appropriate command from the context menu.

Download will start immediately, and for its progress can be monitored in real time. At any time you can interrupt or stop altogether.

When a folder has on the server, the local directory is automatically renamed – to the original name prefixed. original. And next to a hard link to the server Bitcasa named source folder.

When referring to this folder list of files downloaded from the server. The same thing happens when trying to start – the file is downloaded from laquo; oblakaraquo, and opens. In order for data transfer is faster, it is possible to increase the setting of the client cache size allocated Bitcasa for their needs.

Course, it may seem surprising that the file is loaded from the server, while a copy of it is still stored on the hard drive in the next folder, but do not forget that the main idea of ??Bitcasa is to move all the data to laquo ; oblakoraquo.; They say that in the final version of the service at all original folders will be deleted from the hard drive as soon as the download is complete. However, we hope that the program is provided in the settings to disable this feature for those who are not yet ready to fully laquo; oblakofitsirovatsyaraquo;.

Although the client for Windows as there is only an alpha version, running synchronization between multiple computers. It is true that the creators of that function Bitcasa have to work. If both are working two computers each running client Bitcasa, and on one computer is downloading data, the new folder in the program on the second computer does not appear. To see them, you need to restart the client. Access to the files that were uploaded to the server from another computer, it is very easy: just click on the folder in the Bitcasa. After this, a laquo; Provodnikraquo, the list of files obtained from the server.

In Bitcasa has been implemented and the ability to communicate with other people. However, in order to gain access to the file in question, it is necessary to have an account on the service. In other words, exchange is possible between users Bitcasa. Works is simple: you have to select a folder in the client window, click Send This, get a unique link to the folder and send it to friends.

Those, in turn, have to drag the folder shortcut to your client.

Despite the fact that mobile applications have Bitcasa yet not, to access data from a smartphone is already possible. To do this, just go to your mobile browser to the site and enter the data in your account. Web-based access to the data, of course, is possible with any desktop computer. Through the web interface, you can view a list of all files stored on the server and download them.

In the future, the creators

Service plan to implement video transcoding laquo; leturaquo on, that are stored in laquo; oblakeraquo, files can be easily viewed on any device.


Not every one of us is prepared to have to delete the files from the hard drive and upload them to Bitcasa. But the idea, which stands for the service, of course, the revolutionary, and hardly anyone would argue that it is – a part of our future. Whether it will be connected just with Bitcasa or there will be other opportunities storing huge amounts of data in laquo; oblakeraquo – this is the second question that has no answer.

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