OST file

Another type of file in Outlook is the PST file, which is simply stored on the client or a server other than the Exchange server.

Getting started with OST files

To explore how OST files are used in the enterprise, here are some additional resources:

All about .OST files: Offline store (.OST) files are a convenient feature for Microsoft Outlook users and a valuable disaster recovery option for Exchange Server administrators.

How to perform Exchange Server data recovery from .OST files: Recovering Exchange Server from .OST files can be challenging, but sometimes it's the only option. Learn about a third-party tool that simplifies the process.

Performance problems with Microsoft Outlook 2007 .PST and .OST files: Microsoft Outlook 2007 suffers from serious performance problems when .PST and .OST files are used. Find out what the issue is and get the fix.

Recovering Exchange from .OST files: Discover how one administrator cleverly managed to recover his Exchange Server data -- despite a failed hard drive and corrupt backup -- using .OST files.

Learn more about .OST Files

Do you have something to add to this definition? Let us know. Send your comments to techterms@whatis.com

More resources from around the web: - SearchExchange.com offers more information in their Learning Center: All about .OST files. (Free registration may be required.) - XP Professional explains working with offline folders. - Expert Zone Columnist Sharon Crawford explains how to use the Offline Files feature to work with shared documents and encrypt them to secure data.

FILE EXTENSION AND FILE FORMAT LIST File Extension and File Format List: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

RELATED CONTENT Pros and cons of Outlook 2007's storage engine redesign Microsoft Office 2007 SP2 boosts Outlook performance while inflating .pst and .ost file size. Get the pros and cons of the new file structure. Avoid Outlook 2007 performance issues during repairs Premature shut downs of Outlook can lead to performance problems. Educating your users on the reconciliation process is a good start. Group policy settings for Outlook 2007 in cached mode .OST file group policy settings can control how Outlook 2007 operates in cached mode within an Exchange organization. Read about the .OST settings...

RELATED GLOSSARY TERMS Terms from Whatis.com − the technology online dictionary offline folder file  (SearchExchange.com) An offline folder file is the location for offline folders (OST files) in Microsoft Outlook.