- Review the Purge items from the Recoverable Items folder. For details, see Clean Up the Recoverable Items Folder.
- Yes ESEutil /D is the command
- Safe? Yes relatively, however, that said
- before you ever run any type of utility against an Exchange database you should back it up just in case something goes sideways.
- you will need 110% of the EDB size to perform the defrag and
- during the time its being defragged ALL users for that database will be unable to connect.
- Time, well this depends upon many factors, i.e. CPU, Disk Speed, Memory, other processes etc. Basically I would plan to spend at least a full day on it. But whatever you do you need to be patient because it does take time to complete.
- Personally I think you would be better off to create a NEW database and use the New-MoveRequest so check out these two articles http://technet.microsoft.com/en-us/library/bb124495.aspx and http://technet.microsoft.com/en-us/library/bb124797.aspx since these will allow you to keep the system up and running while the data is being moved, however it does require more disk space until the process is done and then you can drop the old DB to gain all the space back.
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