2012-06-06 11:58 PM
What's the best way to split an existing FC disk loop into two separate loops? I currently have a system with a loop consisting of three DS14mk4 shelves and I want to split shelf 3 off into its own loop, change it to shelf 1 and then add more shelves to it.
The procedure I am planning to use is:
During a maintenance outage window while the storage system is shut down, remove shelf 3 from the loop.
Connect shelf 2 to the storage controllers - move the cables that were attaching shelf 3 to the stroage controllers to shelf 2.
Change the shelf ID on shelf 3 to 1
Connect the new shelf 1 to new initiator ports on the storage controllers.
Power on all the controllers and see how it looks.
Am I missing anything here? Is there a better way to do it?
Solved! SEE THE SOLUTION
2012-06-07 12:05 AM
The only other steps I would add is to disable the cluster before power down (if clustered) and boot to maintenance mode to check your aggr's before booting up all the way.