HP ProLiant DL580 G4 Server - Manual (Page 31)

Replacing, moving, or adding hard drives 31
physical drives in the array. During this procedure, the logical drives each keep the same fault-tolerance
method in the enlarged array that they had in the smaller array.
When the expansion process has finished, you can use the liberated storage capacity on the enlarged
array to create new logical drives. Alternatively, you can enlarge one of the original logical drives. This
latter process is called logical drive capacity extension and is also carried out using ACU.