Windows RT 8.1 devices provide local storage for documents and settings, just like any version of Windows. Many devices will also support storage devices such as microSDXC cards, and will also support USB storage devices, including USB keys and USB hard drives.
Windows RT 8.1 devices can utilize SkyDrive cloud storage for synchronizing personalization and configuration settings between devices, even between Windows RT 8.1 and Windows 8.1 devices.
Although there is currently no SkyDrive Pro client application for Windows RT, files stored in a user’s SharePoint personal site document library can be directly accessed through Internet Explorer provided the appropriate network connectivity is available.
Windows RT 8.1 includes support for the new Windows Server 2012 R2 Work Folders feature that enables synchronization of a user-specific folder on the server to the Windows RT device. Unlike offline files or folder redirection, this synchronization is done using the HTTP protocol. Once the server-side configuration is in place, adding a Work Folder to a Windows RT device uses a simple wizard where the user just needs to specify their e-mail address and credentials.
Network Share Access
Windows RT 8.1 devices can access file shares on other Windows-based devices using standard Windows networking protocols to make a connection to these file shares. Because users of these devices will not be logged on using domain-based credentials, it will typically be necessary to specify an alternate user ID and password (or use a smart card) to access these file shares.
Windows RT 8.1 devices can access files and folders through the WebDAV protocol, which leverages the built-in “WebClient” service capabilities.