User Manual

Advanced Functions
5-45
• Shrink a logical disk without an adjacent free chunk
After a logical disk is shrunk, a free chunk is created next to the logical disk.
5.5.3 Logical disk expansion
Logical disk expansion can be used to increase the capacity of a logical
disk by allocating free chunks and by moving logical disks in the same
disk group to consolidate a free chunk for the new space of the selected
logical disks.
• Expand a logical disk by allocating an adjacent free chunk
If there is a free chunk right after the logical disk, the required capacity of
the logical disk can be allocated immediately via the free chunk.
DG DG
LD 0
LD 1
LD 2
LD 0
LD 2
LD 1
free chunk 0
shrink
LD 1
free chunk 0
Figure 5-19 Logical disk capacity shrink and expanding
an adjacent free chunk
DG DG
LD 0
LD 1
LD 2
LD 0
LD 1
LD 2
free chunk 0
free chunk 0
free chunk 1
shrink
LD 1
Figure 5-20 Logical disk capacity shrink and creating a
new free chunk
DG
LD 0
LD 1
expand
LD 1
LD 2
DG
LD 0
LD 2
LD 1
free chunk 0
free chunk 0
Figure 5-21 Logical disk capacity expansion by
allocating an adjacent free chunk