What is OST File & Boon in Exchange Server Crash Situations

Ruchika Srichand
Ruchika Srichand | Updated On - 28 Mar 2022 |

Many organizations rely on Microsoft Exchange Server for establishing and maintaining reliable email communication system. In such organizations, Microsoft Outlook works in coordination with Microsoft Exchange Server to let end users access Exchange mailboxes. This makes seamless email communication possible in the organization.

How does Exchange and Outlook work together?

MS Exchange Server stores all the user mailboxes in a database file named Exchange Database (EDB) file. And users can access their mailboxes on their systems by configuring Outlook with their Exchange accounts. And by enabling ‘Cached Exchange’ mode, it is possible for Outlook users to access their mailboxes even when the Exchange Server is offline.

What are OST Files?

While using Cached Exchange mode, a backup copy of the Exchange mailbox is created in the form of Offline Storage Table (OST) file on user computers, which stores emails, notes, contacts, journals, attachments, tasks, to-do-list items, drafts, etc. With OST files, Outlook users can work offline even when they are not connected to Exchange Server.

More advantages of OST files

OST files are helpful in some other ways too. They help in Exchange mailbox recovery after events like Exchange crashes and disasters. If something wrong happens to the Exchange database file say, the database gets corrupt, Exchange Server gets crashed, or the hard disk where database is stored gets damaged, then the entire email communication gets affected until the database is not repopulated.

Damage of the Exchange database file affects Outlook users, as they cannot communicate further. They cannot access their emails, contacts, notes, to-do-list items, emails stored as drafts, etc. At this moment, if a complete backup of Exchange database file is available, then the problem can be fixed without putting much effort. But, the situation can be worse if backup is not available or the backup file has also been damaged. In that scenario you should not worry because the OST files works as a boon – OST can be converted into PST. And once the OST is converted into PST, user mailbox can be opened with MS Outlook

OST to PST conversation after Exchange disasters

Using OST files stored on user computers, Exchange emails and other related items can be recovered. Here, you might raise a question that how OST can be converted into PST. And my answer for that is Kernel for OST to PST conversion tool, which effectively converts OST to PST and gives you access to your valuable emails, notes, contacts, journals, tasks, to-do-list items, drafts, sent items, attachments, etc.

Kernel for OST to PST converter tool scans even damaged OST files and then converts OST data into corresponding PST file. It can restore deleted items too. While converting OST file data to PST file, this tool maintains complete data integrity and does not change the original data in any way.

  • Exports OST files to PST files
    This utility efficiently converts OST file of any size (either healthy or corrupted) into PST files. Hence OST files are accessible in Outlook after converting into PST file.
  • Restores deleted OST items
    By converting OST to PST files, it also restores deleted items from OST file and displays them in red color for identification.
  • Export emails to email servers
    Using this tool you can export your OST data to Office 365, different email servers like Exchange Server, and web mails like Gmail, Yahoo, Google Apps and more.
  • Easy to use conversion tool
    This tool has easy to use and interactive user interface which is suitable even for non-technical users. You can easily use this tool to convert OST to PST files.

Available as a free evaluation version, Kernel for OST to PST converter tool offers flexibility to analyze the software features and working. Software supports all versions of MS Exchange Server starting from Exchange Server 5.0 and MS Outlook starting from Outlook 97.