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Chapter 6: Volume Configuration 93
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 41, data blocks 1 – 4 are mapped to blocks
5 – 8 of Disk 2.
10025
Virtual
Volume
Physical
Volume
Simple Volume
B1 B2 B3 B4
Disk 1
S10 S11
S9 S12
S6 S7
S5 S8
S2 S3
S1 S4
S14 S15
S13 S16
S10 S11
S9 S12
S6 S7
S5 S8
S14 S15
S13 S16
S2 S3
S1 S4
Disk 2
Figure 41. Simple Volume Block Distribution
volume create simple
You need to define three parameters to create a Simple Volume.
SWITCH PARAMETER DEFINITION STATUS EXAMPLE
-vol
VOLUME USER-ASSIGNED
NAME FOR SIMPLE
VOLUME
OPTIONAL
DEFAULT:
(
SUB)DISK ALIAS
Simple1
-sd
SUBDISK ALIAS ALIAS OF THE
SUBDISK IN WHICH
TO CREATE THE
VOLUME
– IF THE
PHYSCIAL DISK WAS
DIVIDED INTO
SUBDISKS
MANDATORY
ASSIGN AN ALIAS
TO EITHER A
DISK OR A
SUBDISK
Subdisk1
-d
DISK ALIAS ALIAS OF THE DISK
IN WHICH TO
CREATE THE
VOLUME
MANDATORY
ASSIGN AN ALIAS
TO EITHER A
DISK OR A
SUBDISK