Exchange OST information file is made when MS Outlook is not linked with MS Exchange. OST information file have all the Emails, contacts, task, journal and other important information's of a user. If the OST file get damaged then all the e-mails becomes not inaccessible. At that time you can user OST converter software which is result oriented and efficient software to backup OST to PST file. Using this software you can completely save OST file corruption and access your entire information into Outlook PST format. OST converter software easily backup OST to PST, OST to EML as well as OST to MSG file format. You can also download free demo utility to get entire preview of OST file information. If you want to backup OST to PST completely then you have to buy full version by investing $99 only. Also get Outlook email archive tool free with full version of OST converter software. View entire details here - http://backuposttopst.ost-recovery.net/