Apple Xserve RAID: Using RAID 1.2 Admin and Disk Utility - Manual (Page 37)

Chapter 4 Using Advanced Features of RAID Admin 37
5 Select the number of slices into which you want to divide the array.
All slices are the same size, ranging from one-half to one-sixth of the total capacity of
the array, depending on the number you choose.
Note: If the chosen array has already been sliced, you will only be able to merge the
slices. See “Merging Slices in an Array” below to details.
6 Click the Confirmation checkbox to confirm that you want to slice the array.
Any data on the array will be lost when the array is sliced.
7 Click Slice Array.
Merging Slices in an Array
Merging allows you to collapse all the slices in an array into a single slice. Data on every
slice except the first one will be lost when you merge slices. Merging is the second of
two steps that you must do when you expand an array.
To merge slices in a RAID array:
1 In the RAID Admin window, click Advanced.
2 If necessary, enter the management password and click OK.
3 Select Slicing in the Advanced window and click Continue.
4 In the Slicing window, select the array on which you want to merge slices.
All slices on the array will be merged into one.
5 Click the Confirmation checkbox to confirm that you want to merge the slices.
6 Click Merge Slices.