We are planing to migrate ms exchange server 2007 to 2013 for 500 mail boxes. Existing we have 160GB database for 500 user. Please let me know the how much size is required for 2013 database.
Mail size with Attachment: When mail is being addressed to multiple mail IDs, the mail size proportionately increases. is it true ? if so any workaround to maintain the mail size similar to 2007?