Dell PowerEdge S130 User Manual page 16

Data can be accessed while the physical disks are added (if a system has hotswap capability) and while data on the virtual disk is
being redistributed.
For Volume, RAID 1, and RAID 10, OCE/Reconfigure expands the virtual disk by using the available space of the physical disks, which
have been members of the virtual disk. For RAID 0 and RAID 5, additional capacity can be attained by adding physical disks to the
virtual disk.
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