SANRAD I3.1.1205 - Manual (Page 103)

Chapter 6: Volume Configuration 6-11
For the rest of the physical volume on Disk 1 to be usable to the Volume
Manager, you must create another subdisk.
subdisk create –d Disk1 –sl 18000000 –sa 18000000 –sd
Subdisk2
Disk 3 Disk 7 Disk 8
100
82
JBOD 1 JBOD 2
Disk 4
Disk 2 Disk 5 Disk 6 Disk 1
Subdisk 1
Subdisk 2
Figure 6-6. Disk 1 with 2 Subdisks
Creating a Simple Volume
The V-Switch
supports a maximum
of 512 volumes.
Before you can build concatenated, mirrored and striped volumes, you
must create simple volumes from each disk or subdisk in your storage
network.
A physical disk or subdisk is converted directly to a virtual simple
volume. A simple volume differs from a transparent volume in that virtual
volume hierarchies can be built on top of simple volumes but not on
transparent volumes. In Figure 6-7, data blocks 1 – 4 are mapped to blocks
5 – 8 of Disk 2.