Target Skills:

Ability to describe the general strategy for upgrading from a 3.x messaging server.

 
 

More info:

Command line Upgrade Utility (Admin Guide)

 
     

Upgrading Strategy


If you are upgrading from a 3.x messaging server, during installation you have the option to convert the the user messaging folders to 4.0 format.  This is fine for a sandbox environment, but for a production environment where you never want to mess up, it is better to first upgrade the server and get it running, then convert the message store once the system is up and stable.

Messaging Server 4.0 will automatically convert 3.x message folders as users access the folders in real time.  But there can be a delay for the user while the conversion takes place.  It is therefore best to convert the most often used folders (like Inboxes) before bringing the server back online.  Then convert the rest of the folders in the background while the server is running.  This minimizes the effect on the users. You can do this with the command line "upgrade" utility.

More information on using the command line "upgrade" utility can be found by following the link in the left hand column.  Below is an outline of a basic strategy for upgrading from 3.x to Messaging Server 4.0
 

Basic Upgrade Strategy


1. Shut down the 3.x messaging server.

2. Install Messaging Server 4.0.

    a. Chose not to upgrade Messaging Server 3.x configuration information

    b. Chose not to migrate the message store.


3. Upgrade messaging folders only and upgrade Inbox messages.

    a. Upgrade user folders (use command line "upgrade -s").
     
      Creates one to one folder mapping, but delays actual message transfer.
       
    b. Upgrade user Inbox messages (use command line "upgrade -m -i -r"). 
     
      Transfers Inboxes ("-i") immediately ("-m") and removes messages after transfer ("-r").


4. Start up Messaging Server 4.0.
 

5. Upgrade all other folder messages in the background.

a.Upgrade other folder messages (use command line "upgrade -m -r").
Transfers messages immediately ("-m") and removes messages after transfer ("-r").
     

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