SANRAD I3.1.1205 - Manual (Page 172)

8-20 SANRAD V-Switch CLI User Manual
In Figure 8-13 is a mirrored volume with a potential capacity of one terabyte.
The smallest child of the mirrored volume determines the mirrored volume’s
potential capacity. Resizing the one-terabyte child to two terabytes will
increase the mirrored volume’s potential capacity to two terabytes. The actual
capacity of the mirrored volume remains unchanged until it is expanded to
match its potential size.
10
25
1
Mir
Ch 2
1T
1T
Ch 1
2T
Sim3
1T
Figure 8-13. Asymetrical Mirrored Volume
When a simple or snapshot volume is resized with another simple volume, the
first step in their resize concatenation is the creation of a cube. A cube is a
special type of volume intermediary created for resizing a volume through
concatenation. In Figure 8-14, the original connection to the child to resize is
broken and transferred to the cube. A cube’s default alias is X+resized
volume’s alias. In Figure 8-14, the alias of the volume to resize is Ch2; the alias
of the cube isXCh2.
10
25
2
Mir
Ch 2
1T
1T
Ch 1
2T
Sim3
1T
XCh 2
Figure 8-14. Creating a Cube
In Figure 8-15, Sim2 and Sim3 have been concatenated under the cube to a
potential volume of two terabytes.