Now That's Big Data: Apple Orders 12 Petabytes of Storage Gear From EMC

Apple’s new cloud-based iteration of iTunes will need some serious data storage. According to one report, the company has turned to the newly acquired EMC unit Isilon Systems to get it, and in a big way.

Time Capsule Alternatives, Windows 7 and Using Droid in Europe

Questions about iMacs and the Apple Time Capsule, Windows 7.

Palm Pre’s New Operating System

Walt answers questions about Palm’s new Pre phone, Clickfree backup software, and viewing PowerPoint presentations on a new Apple MacBook notebook.

Removing Songs from an iPhone

Walt answers questions about removing songs from an iPhone, setting the wallpaper on a computer desktop, and automated online backup services for PCs.

These Services Make Backing Up Your Files Safe and Inexpensive

Walt Mossberg tests two online services for remotely backing up his computer data that offer unlimited capacity for around $50 a year.