>if i'm uninstalling the 11.0 version and install with a fresh copy of the latest MR4 ver? do i still need to do the backup of the old copy in order for my client pc to be able to >connect back to the endpoint svr? As it's a fresh install that's mean i do not need to restore the database from this backup right?
YES, all your conf and communitationn settings are stored in DB, so you need to do the backup and restore.
Otherwise you will need to go to every single of your clients and connect them afterwards.
>The reason is that, we might be using the embedded db for the new endpoint, whereas currently we're using sql2005 (for the older version 11.0, i think it's advisable to use >a dedicated db for enviroment that will grow more than 500 nodes, that's the reason i'm using that).
No problem swithing DB.
But don't know what will happen if the the backup is from a older version and you apply it on mr4, maybe there could be a conflict with some skema changes.
You should check this out, if you can't get a clear answer, I would install the same version you have now, restore the backup and the upgrade,
Or if you have room enough on the server, do the upgrade, make a backup and the restore.
Remember those files mention in those backup guides.