Cloud computing. Save it to the cloud. Cloud storage. Download from the cloud. These are terms you might be hearing often lately, but what do they mean?
To understand the cloud, we need to look at how computing has changed in the last few years. Five years ago the software applications you installed on your computer came on CD discs. Today when you buy new software it will most likely be purchased online and downloaded directly to your computer from the internet, or as it is more commonly referred to, the web. When your computer operating system is updated, it happens automatically. The updates are downloaded from the web and installed, sometimes without your even being aware it is occurring. If you take many digital photos, you may upload them to Flickr, Kodak Gallery, Picasa Web Albums, or any of the many other photo sharing websites for storage and sharing with friends and family. If you use Facebook, or any of other social media websites, your posts are stored on remote servers for sharing.
What does all this have to do with cloud computing? The term cloud is being used as a metaphor for the web, and the many thousands of servers that make it work. In 2012 computer use revolves around the web, and cloud computing is the delivery of computing services via the web. When you save data to the cloud, it is saved on a remote server and can be retrieved from any device that is connected to the web.
I have written in earlier columns that I use an Apple notebook computer, iPad, and iPhone. My husband also has an iPhone and iPad, as well as a Windows laptop, and I can use the cloud to transfer data between all of these devices, wherever we happen to be. If my daughter-in-law posts new photos of our granddaughters on her Facebook page, I can download them to one of my devices, then distribute the photos to all our other devices using cloud service, such as Dropbox.
Dropbox is an web-based service that allow users to upload files, store them on a remote server, and access them from any computing device. The service is free for the first 2 GB of storage — which works fine for me — with additional storage available for a modest fee. To use Dropbox you download and install a free application on your computer, tablet, and/or smartphone. Then all you have to do to share files between devices is drag and drop them on the Dropbox application. When you open Dropbox on another device, the file will be visible and ready to save.
I save the photos of our granddaughters to the Photo app on our iPhones and iPads. On my husbands PC I save the photos to the Windows Pictures folder for use as screen savers and desktop backgrounds.
Dropbox is only one of many Cloud services available, and next week I will write about some other Cloud alternatives.
