An OST file, or offline storage table (.ost) file, is an offline Outlook Data File used by Microsoft Exchange Server that enables users to work with their messages and mail data even when access to the mail server isn't available. OST files are used in two scenarios: with Microsoft Exchange Server’s Cached Exchange Mode and with the Outlook Connector for Windows Live Hotmail when accessing Hotmail mail.
While a Microsoft Exchange Server user’s e-mails and other data items are normally saved directly on the mail server, OST files are an available option that enable a local copy of all the data to be stored on the user’s computer. These items are then automatically synched when access to the mail server is restored.
One of the biggest differences between OST files and the personal storage table (.pst) files used by Microsoft Outlook for managing POP3, IMAP and web-based mail accounts is that unlike PST files, OST files are tied to the mail account configuration and cannot be opened or backed up individually.
Cold Standby
(cōld stand´bī) (n.) A method of redundancy in which the secondary (i.e., backup) system is only called upon when the primary system fails. The system on cold standby receives scheduled data backups, but less frequently than a warm standby. Cold standby systems are used for non-critical applications or in cases where data is changed infrequently.
Smartphone
Smartphones are a handheld device that integrates mobile phone capabilities with the more common features of a handheld computer or PDA. Smartphones allow users to store information, e-mail, install programs, along with using a mobile phone in one device. For example a Smartphone could be a mobile phone with some PDA functions integrated into the device, or vise versa.
Google Chromecast
A small WiFi-enabled dongle device that connects to a television via a HDMI port to wirelessly stream video and music content to the TV screen from smartphone (both Android and Apple iOS), tablet, laptop or desktop computer devices. Google Chromecast made its debut in late July, 2013, and retails for $35, which is considerably less expensive than the $99 Apple TV that Chromecast competes against.
Initial reviews of Google Chromecast have been mixed, with many praising the low cost ($35) and the high video and audio quality while at the same time criticizing the limited functionality the initial release of Chromecast provides, particularly in terms of compatible streaming services and mobile apps.
Google Chromecast does currently support NetFlix, Google Play, YouTube and Pandora, and it also offers the ability to stream Web pages to the TV. Chromecast is also expected to add support for additional services in the near future.