Adding a new storage controller to a running configuration

You can add a new storage controller to your SAN at any time.

You must follow the zoning guidelines for your switch and also ensure that the controller is setup correctly for use with the SAN Volume Controller.

You must create one or more arrays on the new controller.

If your controller provides array partitioning, create a single partition from the entire capacity available in the array. You must record the LUN number that you assign to each partition. You must also follow the mapping guidelines (if your storage controller requires LUN mapping) to map the partitions or arrays to the SAN Volume Controller ports. You can determine the SAN Volume Controller ports by following the procedure for determining WWPNs.

Perform the following steps to add a new storage controller:

Ensure that the cluster has detected the new storage (MDisks).
1. Click Work with Managed Disks > Managed Disks. The Viewing Managed Disks panel is displayed.
2. Select Discover MDisks from the task list and click Go.
Determine the storage controller name to validate that this is the correct controller. The controller will have automatically been assigned a default name.
- If you are unsure which controller is presenting the MDisks perform the following steps:
1. Click Work with Managed Disks > Disk Controller Systems. The Viewing Disk Controller Systems panel is displayed.
2. Find the new controller in the list. The new controller has the highest numbered default name.
Record the field controller LUN number. The controller LUN number corresponds with the LUN number that you assigned to each of the arrays or partitions.
1. Click Work with Managed Disks > Managed Disks. The Viewing Managed Disks panel is displayed.
2. Find the MDisks that are not in managed mode. These MDisks should correspond with the RAID arrays or partitions that you created.
Create a new MDisk group and add only the RAID arrays that belong to the new controller to this MDisk group. To avoid mixing RAID types, create a new MDisk group for each set of RAID array types (for example, RAID-5, RAID-1).
1. Click Work with Managed Disks > Managed Disk Groups.
2. Select Create an MDisk Group from the task list and click Go. The Create Managed Disk Group wizard begins.
3. Complete the wizard to create a new MDisk group.
  Tip: Give each MDisk group that you create a descriptive name. For example, if your controller is named FAST650-fred, and the MDisk group contains RAID-5 arrays, name the MDisk Group F600-fred-R5.