User`s guide

WebBIOS Configuration Utility 27
Random Array Deletion
The PERC controllers support random array deletion. Random array
deletion is the ability to delete any unwanted logical drives and use that
space for a new logical drive.
Overview
The main benefit is that you are no longer restricted to sequential or
contiguous logical drives when you create logical drives. You can use
WebBIOS to create the next logical drive from the non-contiguous free
space (‘holes’), and from the newly created arrays. WebBIOS provides a list
of configurable arrays in which there is a space to configure.
The random deletion of logical drives creates non-contiguous segments in
the configuration, which prevents the sequential creation of the next logical
drive. You can create logical drives from these non-contiguous segments. To
create such a logical drive, you can span these segments, as long as they have
the same number of physical drives.
You can still create sequential logical drives, without using the non-
contiguous segments. WebBIOS provides information about sequential
segments, non-contiguous segments and physical drives that have not been
configured. You can use this information when you create logical drives.
NOTE: Drive size
expansion is not possible,
even though you can use
non-contiguous free space
to create a new logical
drive. In addition, you
cannot move an existing
logical drive to another
area to protect it from
defragmentation caused
by random deletion.
CAUTION: The deletion of the logical drive can fail under certain
conditions. You cannot delete a logical drive during a
reconstruction.
Deletion can fail during a rebuild, initialization or check
consistency of a logical drive, if that drive has a higher logical
drive number than the drive you want to delete.