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How to move to cloud service! The carefully selected services that can be used

KDrive, which has mass online storage service amounting 50GB by King Soft, was unfortunately ended up.
In business scene it is almost standard to use cloud service for we use multiple device in variable environment.
Since capacity of each services are not enough, there are necessary to use multiple services.
Below is some services that will be substitute for KDrive.

Googleドライブ(15GB) http://www.google.com/intl/ja/drive/about.html
SkyDrive(7GB) http://windows.microsoft.com/ja-jp/skydrive/download
Dropbox(2GB) https://www.dropbox.com/
SugarSync(5GB) http://www.sugarsync.jp/
ADrive(50GB) http://www.adrive.com/