SANRAD V-Switch manual Creating a Simple Volume, Volume create simple, Simple1

The V-Switch supports a maximum of 512 volumes.

Creating a Simple Volume

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.

Virtual

Volume

Simple Volume

B1 B2 B3 B4

Disk 1

Physical	S1	S2	S3	S4
Volume	S5	S6	S7	S8
	S9	S10	S11	S12
	S13	S14	S15	S16

	Disk 2
S1	S2	S3	S4
S5	S6	S7	S8
S9	S10	S11	S12	10025
S13	S14	S15	S16

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	OPTIONAL	Simple1
		NAME FOR SIMPLE	DEFAULT:
		VOLUME	(SUB)DISK ALIAS
-sd	SUBDISK ALIAS	ALIAS OF THE	MANDATORY	Subdisk1
		SUBDISK IN WHICH	ASSIGN AN ALIAS
		TO CREATE THE	TO EITHER A
		VOLUME – IF THE	DISK OR A
		PHYSCIAL DISK WAS	SUBDISK
		DIVIDED INTO
		SUBDISKS
-d	DISK ALIAS	ALIAS OF THE DISK	MANDATORY
		IN WHICH TO	ASSIGN AN ALIAS
		CREATE THE	TO EITHER A
		VOLUME	DISK OR A
			SUBDISK

Chapter 6: Volume Configuration 93