Has anyone done this? I had a support call come through today and a critical exchange calendar had lost almost all of its appointments, just under 500 of them. After a lot of pissing about I have managed to recover them (they weren't in deleted items or the 'recover deleted items' areas) by going into the exchange control panel, setting up a search to find all meetings for the mailbox in question, exporting the 24,000 meetings (250MB of meetings!), loading them into Outlook then moving them to an exchange calendar.
In the future I would like to keep a backup of two calendars as the whole company relies on them. I know you can export the calendar to a PST manually but I am looking for a scheduled method with retention so an empty calendar doesn't overwrite a full calendar. Has anyone done this before? I found a couple of bits of software but am not sure if they will be any good. Happy to pay for software if it is worth it.
Found this for example, might trial it tomorrow:
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