Select Keep deleted e-mail messages for to enable the Exchange deleted item retention on Mailbox Store. Deleted items such as e-mail remain on the server for a configurable length of time before they are permanently removed. You can type a number from 1 to 24855. You can review or manually modify the settings directly from the properties of Mailbox Store in Exchange System Manager. Notice that this option does not change the deletion settings on Public Folder.
Select Reserve disk space for deleted files to enable shadow copy on the volume where the users' shared folders are located. At least 310 MB free disk space is required. You can review or manually modify the settings directly from the properties of the users shared folder volume. For more information, please refer to the Shadow Copy section.
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