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In this article, we will discuss various methods to migrate EDB to PST. EDB is an Exchange Database file formatted using a B-tree structure that stores rich text data like MAPI, SMTP and HTTP messages in MS Exchange. On the other hand, PST is a personal folder file in Microsoft Outlook that stores data like emails messages, calender, reminders and everything in Outlook on user’s computer.

The Error 1022 JET errDiskIO usually occurs due to disk input/output failure. So, whenever the Exchange Server requests for the database page but due to some reason the operating system is unable to get the access to that particular page and the error occurs. In this case, Server will make a request for a page number which is greater than the number of pages in that database file. This error can also occur if some incomplete transaction log set is being replayed in the database. For instance, if a transaction is running on log 9 but the transaction could not be completed because it might have exceeded the database size but after that, the page reference size has now been added to log 10. Because of this, it leads to the error 1022.