Using this feature you can add one, two, or three physical hard disk drives to an existing array so you can create another logical drive in the array.
When you create an array, logical drives are striped across all physical drives in that array. To create more free space in an existing array, define additional physical drives to add to the array. Then, the Manager migrates the logical drives such that the data is spread across the existing and new physical drives.
Select an array from
the Main Tree (that is, the left tree).
Notes:
After you add the physical drives to your arrays, click Next to review your new logical drive configuration.
Tip: You can expand the tree for another view of the configuration.
Note: Logical drive migration is a lengthy process. You cannot perform any other actions on the affected controller until the migration is complete. The ServeRAID Manager displays a progress indicator in the status bar.
Create an array with three physical drives. Then, create two logical drives (labeled as 1 and 2) in the array such that you have no available free space. The logical drive stripes look similar to the following.
Later, you decide to create another logical drive in the array. First, you must create some free space by adding more physical hard disk drives to the array.
If you add two more physical hard disk drives to the array, the logical drives migrate such that they are striped across all five drives. The ServeRAID Manager retains the size of the logical drive by decreasing the size of each block on a physical drive. The space in the logical drives does not increase, so there is free space across the bottom portion of each physical drive (labeled as 3).
When the operation is complete, use the Configuration mode to create a new logical drive in the free space.
When increasing free space, you can add up to three physical drives, as long as the sum of the physical drives does not exceed the maximum number of physical drives allowed for the array. The maximum number of physical drives you can have in an array is limited by the controller stripe-unit size.