While working in offline Exchange mode (Cached Exchange Mode), if the OST file becomes inaccessible, it implies that the file has become corrupted and is denying access. The major reason behind the cause is the oversized volume of Offline Storage Tables and sometimes synchronization error. Though, data can be recovered through inbuilt ‘OST Integrity Check Tool’ but it does not help to deal with oversized OST file recovery where the OST file exceeds the stipulated 2GB limitations.
Outlook Versions with Oversized OST Issue
This problem of oversized OST volume exists in the following versions of the Outlook application:
– MS Outlook 2002 (Standard Edition)
– MS Outlook 2000 (Standard Edition)
– MS Outlook 98 (Standard Edition)
– MS Outlook 97 (Standard Edition)
As all the above stated release of MS Outlook application creates ANSI type OST files; the storage capacity for these files is limited to 2GB. Therefore, the oversized OST recovery is required to gain access to the lost data if the file is not synchronized with Exchange account. However, if the OST is synched with the Exchange account, it can be recreated by downloading the data from EDB mailbox.
Methods to Deal with ANSI OST Corruption
In the previous versions of the application, where it supports non-Unicode format, users normally use SCANOST.exe to deal with the corrupted OST files. As the respective utility does not help dealing with the existing problem, Microsoft has introduced ‘OST Crop Tool’ to handle the issue.
OST Crop Tool: When oversized OST files are recovered using this tool; it works towards truncating the overall file volume to fit within the limited storage capacity. This indicates that during the process, some of the data gets missing from the resultant files. Therefore, the integrity as well as the security of data is not ensured as it involves the possibilities of data loss.
In order to solve heavy OST file issue, the data storage limitation for the proposed file can be set to any range lower than 2GB. This will help preventing data loss due to corruption as the file will not reach its fixed proportion. Since, there is no straightforward solution available to handle oversized OST file corruption; commercial recovery tool can be utilized to recover data from corrupted OST file.
Recover Data & Split Oversized OST File
If the OST file have become corrupted or inaccessible, recreating or rebuilding would not help as the data has already erased from the file. The deleted data can be restored back to the file with the help of OST Recovery tool. The software helps extracting data from the corrupted files through implementing advance scan algorithm. It also enables to store the recovered data to PST, EML and PST file formats and while saving to PST, the tool offers to split heavy OST file into smaller proportions. Moreover, while restoring data to EML or MSG; the oversized volume OST corruption issue eradicates as these file formats save single email message per file. Therefore, the tool is an absolute solution for dealing with the outsized OST files.
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