Lun Concatenation - Fujitsu Eternus2000 Manual

1.3 Functions
1.3.6

LUN Concatenation

LUN concatenation is a function that is used to add new area to a volume and so expand the volume capac-
ity available to the server. This function enables the reuse of no longer required volumes or leftover free
area in a RAID group and can be used to solve capacity shortages.
The following shows the example when concatenating unused areas of different RAID groups to create a
new volume.
Figure 1.16 Example for use LUN Concatenation
20
RAID5 (3+1)
146GB 146GB 146GB
LUN0 292GB
146GB unused
RAID5 (3+1)
146GB 146GB 146GB
LUN0 292GB
Copyright 2009 FUJITSU LIMITED
RAID5 (3+1)
146GB 146GB 146GB
RAID5 (3+1)
146GB 146GB 146GB
LUN2 438GB
ETERNUS2000 disk storage system User Guide
146GB 146GB
LUN1 146GB
292GB unused
146GB 146GB
LUN1 146GB
P3AM-2512-03EN