Accusys ExaRAID GUI - Manual (Page 221)

Advanced Functions
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5.5.5 Volume expansion and shrink
The capacity of a volume can be online expanded by adding the logical
disks to the volume, which concatenates the space of each logical disk
to form a larger capacity. Because the expansion is done instantly
without incurring any background tasks, you can quickly start using the
added capacity without waiting. Users can also reduce the capacity of a
volume by removing the concatenated logical disks. Freely expanding
and shrinking a volume enables efficient storage resource management.
Striping: A volume formed by single volume unit.
Concatenating: A volume formed by multiple volume units.
Concatenated striping: A volume formed by concatenating set of
striping member volumes.
5.5.6 Windows DiskPart Utility
The Microsoft Diskpart utility is a command line program for managing the
disk partitions or volumes on Windows systems. You can use it for
repartitioning drives, deleting partitions, creating partitions, changing
drive letters, and shrinking or expanding volumes by using scripts or direct
input from a command prompt. The Diskpart utility is embedded in
MV 1 MV 2
VOL 1
MV 3 MV 4
VU 1:1
Figure 5-27 Striping member
VOL 2 (concatenating)
VU 2:1 VU 2:2 VU 2:3 VU 2:4
MV 2:1 MV 2:2 MV 2:3 MV 2:4
Figure 5-28 Concatenating member
VU 3:2 (striping) VU 3:1 (striping)
MV 3:1
VOL 3 (concatenating two sets: VU3:1 & VU 3:2)
MV 3:2 MV 3:3 MV 3:4 MV 3:5 MV 3:6 MV 3:7
Figure 5-29 Concatenated striping member